Articles de revues : « Nano-magnetism »

1

Gibbs, M. R. J. « Nano-Scale Magnetism ». Materials Technology 19, n^o 2 (janvier 2004) : 98–101. http://dx.doi.org/10.1080/10667857.2004.11753071.

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Liu, Rui Cui, Fu Yi Jiang et Zi Quan Liu. « Study on the Preparation of Nano Fe₃O₄ Powder and its Properties ». Applied Mechanics and Materials 178-181 (mai 2012) : 562–65. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.562.

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The experiment used iron chloride, iron dichloride and other agents as the main resources to prepare the nano Fe3O4 powder by co-precipitation method. Magnets were used to test the magnetism of the prepared nano Fe3O4 powder samples. And the photo-catalytic degradation of rhodamine B solution was used as the model reaction to test the photo-catalytic activity of the prepared nano Fe3O4 powder. The results showed that the prepared nano Fe3O4 powder samples had good magnetism but low photo-catalytic activity.

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Ota, N., N. Gorjizadeh et Y. Kawazoe. « Magnetism of Edge Modified Nano-graphene ». Journal of the Magnetics Society of Japan 36, n^o 1_2 (2012) : 36–41. http://dx.doi.org/10.3379/msjmag.1108m002.

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Niitaka, Seiji, Kazuyoshi Yoshimura, Atsushi Ikawa et Koji Kosuge. « Magnetism of Na2V3O7with Nano-Tube Structure ». Journal of the Physical Society of Japan 71, Suppl (janvier 2002) : 208–10. http://dx.doi.org/10.1143/jpsjs.71s.208.

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Lisfi, A., T. Ren, A. Khachaturyan et M. Wuttig. « Nano-magnetism of magnetostriction in Fe35Co65 ». Applied Physics Letters 104, n^o 9 (3 mars 2014) : 092401. http://dx.doi.org/10.1063/1.4866183.

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Iannotti, Vincenzo, Alessio Adamiano, Giovanni Ausanio, Luciano Lanotte, Giuliana Aquilanti, John Michael David Coey, Marco Lantieri et al. « Fe-Doping-Induced Magnetism in Nano-Hydroxyapatites ». Inorganic Chemistry 56, n^o 8 (5 avril 2017) : 4446–58. http://dx.doi.org/10.1021/acs.inorgchem.6b03143.

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Kowlgi, Krishna, Lian Zhang, Stephen Picken et Ger Koper. « Anomalous magnetism in noble metal (nano)particles ». Colloids and Surfaces A : Physicochemical and Engineering Aspects 413 (novembre 2012) : 248–51. http://dx.doi.org/10.1016/j.colsurfa.2012.01.023.

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Enoki, Toshiaki, Naoki Kawatsu, Yoshiyuki Shibayama, Hirohiko Sato, Roji Kobori, Satoshi Maruyama et Katsumi Kaneko. « Magnetism of nano-graphite and its assembly ». Polyhedron 20, n^o 11-14 (mai 2001) : 1311–15. http://dx.doi.org/10.1016/s0277-5387(01)00611-8.

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Sobolev, Kirill, Hanna Pazniak, Michael Farle, Valeria Rodionova et Ulf Wiedwald. « Synthesis, phase purification and magnetic characterization of the (Cr_1−x, Mn_x)₂AlC MAX-phase ». Journal of Materials Chemistry C 9, n^o 46 (2021) : 16516–22. http://dx.doi.org/10.1039/d1tc03092b.

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Prokopenko, O. V., D. A. Bozhko, V. S. Tyberkevych, A. V. Chumak, V. I. Vasyuchka, A. A. Serga, O. Dzyapko et al. « Recent Trends in Microwave Magnetism and Superconductivity ». Ukrainian Journal of Physics 64, n^o 10 (1 novembre 2019) : 888. http://dx.doi.org/10.15407/ujpe64.10.888.

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We review the development trends in microwave magnetism and superconductivity over the last five decades. The review contains the key results of recent studies related to the promising areas of modern magnetism and applied physics – spintronics, magnonics, magnon caloritronics, physics of magnonic crystals, spin-wave logic, and the development of novel micro- and nano-scale magnetic devices. The main achievements in these fields of physics are summarized and generalized.

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Li, Jian Ling, et Decai Li. « Research on Magnetization Mechanism of Nano-Magnetic Fluid ». Defect and Diffusion Forum 295-296 (janvier 2010) : 19–26. http://dx.doi.org/10.4028/www.scientific.net/ddf.295-296.19.

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In this paper, we first analyzed the nano-magnetic fluid composition and properties. Then we studied the characteristics of nano-magnetic fluid magnetization and magnetization mechanism. In addition, we also studied the nano-Fe3O4 magnetic particle size and surface modification effect on the magnetic properties of magnetic fluids. Nano-magnetic fluid is a new type of liquid nano-composite functional material. It also has magnetism and mobility, and therefore it has many unique properties and a wide range of applications. Nano-magnetic fluid magnetization characteristic is one of its main properties, its performance and application of magnetic fluid play a decisive role.

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Lin, Xinxing, Wei Ma, Hui Wu, Shilin Cao, Liulian Huang, Lihui Chen et Atsushi Takahara. « Superhydrophobic magnetic poly(DOPAm-co-PFOEA)/Fe3O4/cellulose microspheres for stable liquid marbles ». Chemical Communications 52, n^o 9 (2016) : 1895–98. http://dx.doi.org/10.1039/c5cc08842a.

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Cellulose-based micro/nano hierarchical spheres with magnetism and superhydrophobicity were fabricated and further used to transport and manipulate liquid droplets through the formation of stable liquid marbles.

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Menzel, D., A. Borgschulte, M. Broschwitz, A. M. Carsteanu et J. Schoenes. « Magnetism and Magneto-Optics of MnBi Nano-Particles. » Journal of the Magnetics Society of Japan 25, n^o 3−2 (2001) : 263–66. http://dx.doi.org/10.3379/jmsjmag.25.263.

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Merkel, D. G., D. Bessas, Z. Zolnai, R. Rüffer, A. I. Chumakov, H. Paddubrouskaya, C. Van Haesendonck, N. Nagy, A. L. Tóth et A. Deák. « Evolution of magnetism on a curved nano-surface ». Nanoscale 7, n^o 30 (2015) : 12878–87. http://dx.doi.org/10.1039/c5nr02928g.

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The role of nanoparticle size, interparticle distance and magnetic layer thickness on the formation of magnetic nanostructures was studied. Individual magnetic behaviour was found for the 400 nm spheres and a collective magnetic structure for the 25 nm balls where magnetic domains spread over several particles.

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KAKIZAKI, Akito. « Surface Magnetism and the Age of Nano-Technology ». Hyomen Kagaku 26, n^o 3 (2005) : 123. http://dx.doi.org/10.1380/jsssj.26.123.

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HOU, Bihui, Fengyan LIU, Ming YUE et Hong ZENG. « Magnetism and phase-transitional analysis of nano-metal gadolinium ». Journal of Rare Earths 27, n^o 6 (décembre 2009) : 1018–22. http://dx.doi.org/10.1016/s1002-0721(08)60380-4.

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Bhatti, Ilyas Noor, Imtiaz Noor Bhatti, Rabindra Nath Mahato et M. A. H. Ahsan. « Structure, magnetism and dielectric study of nano-crystalline Gd2CoMnO6 ». Solid State Sciences 108 (octobre 2020) : 106384. http://dx.doi.org/10.1016/j.solidstatesciences.2020.106384.

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El-Hilo, M. « Nano-particle magnetism with a dispersion of particle sizes ». Journal of Applied Physics 112, n^o 10 (15 novembre 2012) : 103915. http://dx.doi.org/10.1063/1.4766817.

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Das, J., D. K. Mishra et V. V. Srinivasu. « Spin canting and magnetism in nano-crystalline Zn1−xAlxO ». Journal of Alloys and Compounds 704 (mai 2017) : 237–44. http://dx.doi.org/10.1016/j.jallcom.2017.02.025.

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Ahmed, Narjis Mohmmad, Dr Hassan Abdul Hadi Abdul Hussein et Mustafa H. Flayyih. « Synthesis of Hematite Nano Material and Its Effect on Properties of Water Based Drilling Mud ». Journal of Petroleum Research and Studies 11, n^o 4 (20 décembre 2021) : 17–35. http://dx.doi.org/10.52716/jprs.v11i4.559.

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The worldwide use of nanotechnology in most industries, such as in oil and gas industries, the world now has been directed towards introducing this modern technology in drilling fluids for the purpose of reaching and extracting hydrocarbons that exist at high depth where high temperatures and high pressure present using this technology to achieve the required mud properties with lowest cost. In this research, the particles of Nano hematite were prepared in laboratory using two methods, the first method by chemical reaction between iron nitrate (Fe (NO3)3• 9H2O) and ammonium hydroxide (NH4OH), after that, prepared Nano-materials were subjected to AFM, XRD testing in order to investigate the size and type of particles, the investigations showed that the formed particles were Fe2O3 (<100nm). The second method is similar to the first method except adding (CTAB) material in order to reduce the interfacial tension leading to 4.5nm Nano-material. Three samples of drilling mud were prepared, the first sample was prepared from water and bentonite only, the second sample was prepared from water, bentonite and nano (prepared from first method), the third samples was prepared from water, bentonite and nano (prepared from second method), rheological properties, filtration, density, lubricity, sagging and magnetism properties were measured by analyzing and comparing the results. The results were obtained showed that the small effect of nano material filtration, density, lubricity, and sagging properties, except the viscosity increase when the second sample of Nano hematite was added to the mud prepared from water and bentonite. Also, the magnetism increase when the second sample of nano hematite was added to the mud prepared from water and bentonite, due to the difference in the molecular arrangement caused by the presence of CTAB.

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Li, Tian, et Guangping Zheng. « The influences of glass–glass interfaces and Ni additions on magnetic properties of transition-metal phosphide nano-glasses ». AIP Advances 12, n^o 8 (1 août 2022) : 085229. http://dx.doi.org/10.1063/5.0088043.

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In this work, a novel kind of non-crystalline materials, the metallic nano-glasses (NGs), is synthesized, and the influences of glass–glass interfaces (GGIs) and Ni additions on the structural and thermodynamics properties, as well as the magnetism of (Co, Fe, Ni)–P NGs with various sizes of glassy grains (Davg) are studied systematically. The addition of Ni and the reduction of Davg are found to improve the glass forming abilities of NGs. The influences of volume fractions of GGIs on the magnetism of NGs are analyzed by Mössbauer spectroscopy and magnetization hysteresis measurements. It is found that the soft magnetic properties of (Co, Fe)–P NGs with reduced Davg can be dramatically improved, as compared with micro-structured samples. Thus, this work has an in-depth understanding of the structural properties and magnetism of NGs as affected by the glass–glass interfaces in magnetic NGs.

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Yasir, Al-Saidan Khudhair Joudah. « Effect of Magnetization of Nano Fertilization on The Growth and Yield of Wheat Triticum Aestivum L ». IOP Conference Series : Earth and Environmental Science 923, n^o 1 (1 novembre 2021) : 012087. http://dx.doi.org/10.1088/1755-1315/923/1/012087.

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Abstract A field experiment was conducted in Al-Fadhiliya city, Dhi Qar province during the winter agricultural season 2019 - 2020 for the purpose of studying the effect of magnetization of nano Fertilization on the growth and yield of wheat. The experiment was carried out according to Split Plot Design and using the RCBD Design with three replications. The first factor included Magnetization levels of the Nano Fertilization (Gs) (0 Gs (Gs1),750 Gs (Gs2),1500 Gs (Gs3) for 15 minute (in main plot) while the second factor included the Nano Fertilization levels for (N, P) (F) 1 Kg.ha−1(F1), 1.5 Kg.ha−1(F2), 2 Kg.ha−1(F3)(according to the recommendation of the manufacturer (1 - 2 Kg.ha−1))(in sub plot). Mineral fertilizer add for (N, P) by 120 Kg N.ha−1, 100 Kg P ha−1. Mineral and nano fertilizer section for three growth stages (ZGs21, ZGs32, ZGs49). The results showed a positive response to the studied traits of variety Bohouth 22 (Plant height, number of tillers, number of grains and total grain yield) given the highest averages at the level of magnetism (Gs3) and fertilization level (F3)(109.33 cm, 426.2 tiller.m−2, 73.22 grain. spike−1, 1.859 t.d−1),(108.44 cm, 471.4 tiller.m−2, 77.78 grain. spike−1, 1.915 t.d-1) respectively, while the level of magnetism (Gs1) and fertilization level (F1) giving the lowest averages (95.11 cm, 341.3 tiller.m−2, 60.11 grain. spike−1, 1.437 t.d−1), (96.22 cm, 312.1 tiller.m−2, 54.00 grain. spike−1, 1.412 t.d−1) respectively. The level of magnetism (Gs1) and fertilization level (F1) gave the highest average in weight 1000 grain (43.188, 44.266)g respectively, while the magnetization level (Gs3) and fertilization level (F3) giving the lowest average (42.092,41.182)g respectively. Interaction treatment (Gs3F3) gave the highest average grain yield 2.1773 t.d−1 while the interaction treatment (Gs1F1) gave the lowest average attained 1.218 t.d−1.

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Shimada, Kunio, Atsushi Shibayama, Eiichiro Yuze, Hitoshi Saitoh et Syunji Ishio. « Magnetism and Self-Assembled Structure Utilizing Micro- and Nano-Particles ». Journal of Metastable and Nanocrystalline Materials 24-25 (septembre 2005) : 121–24. http://dx.doi.org/10.4028/www.scientific.net/jmnm.24-25.121.

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Molochnikov, L. S., K. I. Borodin, A. E. Yermakov, M. A. Uimin, A. S. Minin, A. V. Vostroknutova, R. M. Eremina et al. « Magnetism and temperature dependence of nano-TiO2 : Fe EPR spectra ». Materials Chemistry and Physics 276 (janvier 2022) : 125327. http://dx.doi.org/10.1016/j.matchemphys.2021.125327.

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DENG, Lian-wen, Bai-yun HUANG, Wen-sheng LIU, Ke-sheng ZHOU et Bing-chu YANG. « Electromagnetic characteristics and microwave magnetism of Fe46Co44B10/SiO2 nano-multilayers ». Transactions of Nonferrous Metals Society of China 19 (décembre 2009) : s734—s737. http://dx.doi.org/10.1016/s1003-6326(10)60141-0.

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Yang, Tzong-Jer, Yu-Jun Zhao et A. J. Freeman. « Magnetism and electronic structure of Fe chains and nano-wires ». Journal of Magnetism and Magnetic Materials 272-276 (mai 2004) : 1648–49. http://dx.doi.org/10.1016/j.jmmm.2003.12.230.

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Dey, Rajkumar, Ritamay Bhunia, Shamima Hussain, Prabir Dutta, Souvik Chatterjee, Radhaballav Bhar et Arun Kumar Pal. « Room Temperature Magnetism in Free-Standing Nano-Ni/PVDF Composites ». Polymer-Plastics Technology and Engineering 56, n^o 11 (13 avril 2017) : 1213–24. http://dx.doi.org/10.1080/03602559.2016.1263865.

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Masrour, R., L. Bahmad, A. Benyoussef, M. Hamedoun et E. K. Hlil. « Magnetism of Nano-Graphene with Defects : A Monte Carlo Study ». Journal of Superconductivity and Novel Magnetism 26, n^o 3 (21 novembre 2012) : 679–85. http://dx.doi.org/10.1007/s10948-012-1785-9.

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Pedrueza-Villalmanzo, Esteban, Francesco Pineider et Alexandre Dmitriev. « Perspective : plasmon antennas for nanoscale chiral chemistry ». Nanophotonics 9, n^o 2 (25 février 2020) : 481–89. http://dx.doi.org/10.1515/nanoph-2019-0430.

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AbstractPlasmon nanoantennas are extensively used with molecular systems for chemical and biological ultra-sensing, for boosting the molecular emissive and energy transfer properties, for nanoscale catalysis, and for building advanced hybrid nanoarchitectures. In this perspective, we focus on the latest developments of using plasmon nanoantennas for nanoscale chiral chemistry and for advancing molecular magnetism. We overview the decisive role nanoplasmonics and nano-optics can play in achieving chirally selective molecular synthesis and separation and the way such processes might be precisely controlled by potentially merging chirality and magnetism at the molecular scale. We give our view on how these insights might lead to the emergence of exciting new fundamental concepts in nanoscale materials science.

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Dobrovolskiy, Oleksandr V., Maksym Kompaniiets, Roland Sachser, Fabrizio Porrati, Christian Gspan, Harald Plank et Michael Huth. « Tunable magnetism on the lateral mesoscale by post-processing of Co/Pt heterostructures ». Beilstein Journal of Nanotechnology 6 (29 avril 2015) : 1082–90. http://dx.doi.org/10.3762/bjnano.6.109.

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Controlling magnetic properties on the nanometer-scale is essential for basic research in micro-magnetism and spin-dependent transport, as well as for various applications such as magnetic recording, imaging and sensing. This has been accomplished to a very high degree by means of layered heterostructures in the vertical dimension. Here we present a complementary approach that allows for a controlled tuning of the magnetic properties of Co/Pt heterostructures on the lateral mesoscale. By means of in situ post-processing of Pt- and Co-based nano-stripes prepared by focused electron beam induced deposition (FEBID) we are able to locally tune their coercive field and remanent magnetization. Whereas single Co-FEBID nano-stripes show no hysteresis, we find hard-magnetic behavior for post-processed Co/Pt nano-stripes with coercive fields up to 850 Oe. We attribute the observed effects to the locally controlled formation of the CoPt L10 phase, whose presence has been revealed by transmission electron microscopy.

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Zhou, Xiaodong, Fei Li, Yanxia Xing et Wanxiang Feng. « Multifield-tunable magneto-optical effects in electron- and hole-doped nitrogen–graphene crystals ». Journal of Materials Chemistry C 7, n^o 11 (2019) : 3360–68. http://dx.doi.org/10.1039/c9tc00315k.

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The magneto-optical effects play a prominent role in probing the exotic magnetism in 2D materials. Here, we present that the magneto-optical Kerr and Faraday effects in carrier-doped nitrogen–graphene crystals can be effectively mediated by electric, magnetic, and strain fields. Our results indicate that nitrogen–graphene crystals provide a novel 2D material platform for nano-spintronics and magneto-optical devices.

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Yadnya, Made Sutha, Dwi Ratnasari, Abdulah Zainuddin, Bulkis Kanata, Teti Zubaidah et Paniran Paniran. « Program Penerapan Mitigasi Bencana Gempa Bumi Di Ponpes Nurul Wathan Lombok Tengah NTB Berorientasi Pada Penurunan Magnet Bumi Akibat Pergerakan Sesar Patahan ». Jurnal Gema Ngabdi 2, n^o 3 (30 novembre 2020) : 211–15. http://dx.doi.org/10.29303/jgn.v2i3.99.

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The program that was implemented at Nurul Wathan (NW) was the result of research at the Rembitan Observatory to measure the earth's magnetism using a device called Proton. The international unit for measuring the earth's magnetism is the Tesla, specifically the nTesla earth magnet (Nano Tesla). The stages of implementing the solution are adjusted to the characteristics of the stages of the disaster cycle. During a disaster, full of activities in an emergency situation, post-disaster, reduce the complexity of the problems in reconstruction and rehabilitation. Pre-disaster requires thorough planning. Communities that are exposed to disasters are very diverse. For those who have been educated or those who have not received formal education, they need to understand the importance of disaster risk reduction (DRR).

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Li, Zhaohui, Zhiqiang Zhao, Xiantao Shang, Jie Zhang, Li Cai, Yuanyuan Pan, Qinghao Li, Hongsen Li, Qiang Cao et Qiang Li. « Electrical control of ON–OFF magnetism and exchange bias via reversible ionic motion ». Applied Physics Letters 120, n^o 8 (21 février 2022) : 082405. http://dx.doi.org/10.1063/5.0084190.

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The lithium-based magneto-ionic effect is an emerging and promising way to control magnetism. Here, a lithium-ion battery-structure is adopted to control the magnetic properties of the Co/CoO bilayer. Using operando magnetometry, we performed a reversible toggling of lithium ion induced magnetic phase transition between nano-Co (superparamagnetism) and CoO (antiferromagnetism), which enables an ON–OFF magnetism switching. On this basis, a robust modulation of exchange bias by electric field at low temperature is achieved. In addition, reversible tuning of coercivity and magnetization up to 71% and 118%, respectively, in a Co/CoO bilayer at room temperature are performed. This work provides a more efficient means to modulate antiferromagnetism and exchange bias, facilitating the development of antiferromagnetic spintronics.

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Jin, Yihan, Xi Luo, Jinglin Zhang, Yipeng Yu, Jing An, Jianfu Zhang, Dongliang Zhao et Kewei Gao. « Enhanced Electro-Magnetic Wave Absorbing Properties of Fe3O4-Polyaniline Nano-Composites ». Science of Advanced Materials 13, n^o 5 (1 mai 2021) : 938–43. http://dx.doi.org/10.1166/sam.2021.3996.

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Fe3O4-polyaniline (Fe3O4-PANI) binary nano-composites have been prepared by in-situ polymerization of aniline monomer on surface of Fe3O4 magnetic nano-particles. The morphology, structure and magnetic performance are characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), transmission electron microscope (TEM) and vibration sample magnetism (VSM). The electro-magnetic data is tested by vector network analyzer demonstrating that the minimum reflection loss (RLmin) value of Fe3O4-PANI is -26 dB at 17 GHz with 1.5 mm thickness and 3.48 GHz (14.52 GHz~18 GHz) absorbing bandwidth (RL < -10 dB). It is believed that such composites will have a promising application in the future.

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Hou, Ji-Dan, Yun-Ping Zhang et Chun-Ju Tang. « New polymer nano-biomaterials in rehabilitation nursing of orthopedic surgery injuries ». Materials Express 12, n^o 1 (1 janvier 2022) : 173–77. http://dx.doi.org/10.1166/mex.2022.2130.

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Changes in nano-bio materials’ surface electronic structure and crystal structure produce small-size effects that macroscopic objects do not have. This makes it have a series of excellent macroscopic properties such as force, magnetism, electricity, optics, chemistry, and biology that traditional materials do not have. This article studies the application of new polymer nano-bio materials in orthopedic trauma. We study the effect of nanolevel hydroxyapatite gradient coating on the expression of osteoblast phenotypic factors. The shear strength of the implant-bone interface is better than the titanium alloy group and the titanium alloy group. So we can conclude that the nano-grade hydroxyapatite gradient coating material has good biological characteristics. It can promote the early healing of the bone trauma interface. This material is worthy of clinical application.

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Okazaki, T., T. Miyanaga, Y. Kondo, Y. Aono et M. Homma. « Magnetism and Nano-cluster in Inhomogeneous Phase of Ni-Mn Alloy ». Journal of the Magnetics Society of Japan 23, n^o 1_2 (1999) : 623–25. http://dx.doi.org/10.3379/jmsjmag.23.623.

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Sander, Dirk, Hirofumi Oka, Marco Corbetta, Valeri Stepanyuk et Jürgen Kirschner. « New insights into nano-magnetism by spin-polarized scanning tunneling microscopy ». Journal of Electron Spectroscopy and Related Phenomena 189 (août 2013) : 206–15. http://dx.doi.org/10.1016/j.elspec.2012.09.006.

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Kwon, Youngsoo, Sunglae Cho et Soon C. Hong. « Electronic structure and magnetism of CrAu3 nano films : density functional study ». physica status solidi (b) 241, n^o 7 (juin 2004) : 1415–18. http://dx.doi.org/10.1002/pssb.200304582.

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Yang, Bo, Lanxing Gao, Miaoxuan Xue, Haihe Wang, Yanqing Hou, Yingchun Luo, Han Xiao et al. « Experimental and Simulation Research on the Preparation of Carbon Nano-Materials by Chemical Vapor Deposition ». Materials 14, n^o 23 (30 novembre 2021) : 7356. http://dx.doi.org/10.3390/ma14237356.

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Carbon nano-materials have been widely used in many fields due to their electron transport, mechanics, and gas adsorption properties. This paper introduces the structure and properties of carbon nano-materials the preparation of carbon nano-materials by chemical vapor deposition method (CVD)—which is one of the most common preparation methods—and reaction simulation. A major factor affecting the material structure is its preparation link. Different preparation methods or different conditions will have a great impact on the structure and properties of the material (mechanical properties, electrical properties, magnetism, etc.). The main influencing factors (precursor, substrate, and catalyst) of carbon nano-materials prepared by CVD are summarized. Through simulation, the reaction can be optimized and the growth mode of substances can be controlled. Currently, numerical simulations of the CVD process can be utilized in two ways: changing the CVD reactor structure and observing CVD chemical reactions. Therefore, the development and research status of computational fluid dynamics (CFD) for CVD are summarized, as is the potential of combining experimental studies and numerical simulations to achieve and optimize controllable carbon nano-materials growth.

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Rabelo, Renato, Salah-Eddine Stiriba, Danielle Cangussu, Cynthia L. M. Pereira, Nicolás Moliner, Rafael Ruiz-García, Joan Cano, Juan Faus, Yves Journaux et Miguel Julve. « When Molecular Magnetism Meets Supramolecular Chemistry : Multifunctional and Multiresponsive Dicopper(II) Metallacyclophanes as Proof-of-Concept for Single-Molecule Spintronics and Quantum Computing Technologies ? » Magnetochemistry 6, n^o 4 (4 décembre 2020) : 69. http://dx.doi.org/10.3390/magnetochemistry6040069.

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Molecular magnetism has made a long journey, from the fundamental studies on through-ligand electron exchange magnetic interactions in dinuclear metal complexes with extended organic bridges to the more recent exploration of their electron spin transport and quantum coherence properties. Such a field has witnessed a renaissance of dinuclear metallacyclic systems as new experimental and theoretical models for single-molecule spintronics and quantum computing, due to the intercrossing between molecular magnetism and metallosupramolecular chemistry. The present review reports a state-of-the-art overview as well as future perspectives on the use of oxamato-based dicopper(II) metallacyclophanes as promising candidates to make multifunctional and multiresponsive, single-molecule magnetic (nano)devices for the physical implementation of quantum information processing (QIP). They incorporate molecular magnetic couplers, transformers, and wires, controlling and facilitating the spin communication, as well as molecular magnetic rectifiers, transistors, and switches, exhibiting a bistable (ON/OFF) spin behavior under external stimuli (chemical, electronic, or photonic). Special focus is placed on the extensive research work done by Professor Francesc Lloret, an outstanding chemist, excellent teacher, best friend, and colleague, in recognition of his invaluable contributions to molecular magnetism on the occasion of his 65th birthday.

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Winarsih, Suci, Faisal Budiman, Hirofumi Tanaka, Tadashi Adachi, Akihiro Koda, Yoichi Horibe, Budhy Kurniawan, Isao Watanabe et Risdiana Risdiana. « Observation of Cu Spin Fluctuations in High-Tc Cuprate Superconductor Nanoparticles Investigated by Muon Spin Relaxation ». Nanomaterials 11, n^o 12 (20 décembre 2021) : 3450. http://dx.doi.org/10.3390/nano11123450.

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The nano-size effects of high-Tc cuprate superconductor La2−xSrxCuO4 with x = 0.20 are investigated using X-ray diffractometry, Transmission electron microscopy, and muon-spin relaxation (μSR). It is investigated whether an increase in the bond distance of Cu and O atoms in the conducting layer compared to those of the bulk state might affect its physical and magnetic properties. The μSR measurements revealed the slowing down of Cu spin fluctuations in La2−xSrxCuO4 nanoparticles, indicating the development of a magnetic correlation at low temperatures. The magnetic correlation strengthens as the particle size reduces. This significantly differs from those observed in the bulk form, which show a superconducting state below Tc. It is indicated that reducing the particle size of La2−xSrxCuO4 down to nanometer size causes the appearance of magnetism. The magnetism enhances with decreasing particle size.

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Mahadeva, Sreekanth, Jincheng Fan, Anis Biswas, K. Sreelatha, Lyubov Belova et K. Rao. « Magnetism of Amorphous and Nano-Crystallized Dc-Sputter-Deposited MgO Thin Films ». Nanomaterials 3, n^o 3 (7 août 2013) : 486–97. http://dx.doi.org/10.3390/nano3030486.

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Kaneyoshi, T. « Magnetism in an antiferromagnetic Ising nano-ladder under an applied transverse field ». Phase Transitions 92, n^o 8 (26 juin 2019) : 707–18. http://dx.doi.org/10.1080/01411594.2019.1632848.

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Wang, Wen Jie, Qing Jie Jiao, Chong Guang Zang et Xiang Dong Zhu. « Study on the Absorption Properties of Spinel Type Ferrite Composite Coatings in the Low Frequency ». Advanced Materials Research 415-417 (décembre 2011) : 30–34. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.30.

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In the present study magneto-polymer composite coatings are fabricated using nano Zn ferrite, Mn ferrite, Ni ferrite, Zn-Mn ferrite and Zn-Ni ferrite by spraying method. The complex permeabilities, Complex permittivities and microwave absorbing properties within the low frequency of these composites were characterized and investigated. The results showed that the magnetism of the mixed spinel ferrites ( Mn ferrite, Zn-Ni ferrite, Zn-Mn ferrite) are strong but the dielectric properties are weaker, while the magnetism of the normal spinel ferrites (Zn ferrite) is the weakest but provide with a big storage capability of electric energy. The absorbing characteristics of the spinel ferrites are better at 300 kHz-1.5GHz, with minimum absorption of 12.5 dB and the maximum absorption at 480MHz, 1050 MHz and 1400 MHz. The microwave absorbing property of the mixed spinel ferrite Zn-Mn ferrite is best having the RL value being -42.5 dB at 1400GHz.

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Kang, Byunghoon, Jaewoo Lim, Hye-young Son, Yuna Choi, Taejoon Kang, Juyeon Jung, Yong-Min Huh, Seungjoo Haam et Eun-Kyung Lim. « PEGylated Magnetic Nano-Assemblies as Contrast Agents for Effective T2-Weighted MR Imaging ». Nanomaterials 9, n^o 3 (11 mars 2019) : 410. http://dx.doi.org/10.3390/nano9030410.

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We designed a high-sensitivity magnetic resonance imaging contrast agent that could be used to diagnose diseases. First, magnetic nanocrystals were synthesized by a thermal decomposition method on an organic solvent to obtain a high magnetism and methoxy poly(ethylene glycol)-poly(lactic acid) as an amphiphilic polymer using the ring-opening polymerization method to stably disperse the magnetic nanocrystals in an aqueous phase. Subsequently, the magnetic nanoclusters simultaneously self-assembled with methoxy poly(ethylene glycol)-poly(lactic acid) using the nano-emulsion method to form magnetic nanoclusters. Because their shape was similar to a raspberry, they were named PEGylated magnetic nano-assemblies. The PEGylated magnetic nano-assemblies were dispersed stably in the aqueous phase with a uniform size of approximately 65–70 nm for an extended period (0 days: 68.8 ± 5.1 nm, 33 days: 69.2 ± 2.0 nm, and 44 days: 63.2 ± 5.6). They exhibited both enough of a magnetic resonance (MR) contrast effect and biocompatibility. In an in vivo study, the PEGylated magnetic nano-assemblies provided a high contrast effect for magnetic resonance images for a long time after one treatment, thereby improving the diagnostic visibility of the disease site.

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Luo, Jian, et Yimin Cui. « Co9S8 Nano/Microspheres : Characterization and Magnetic Properties ». Journal of Nanoscience and Nanotechnology 16, n^o 4 (1 avril 2016) : 4164–68. http://dx.doi.org/10.1166/jnn.2016.11292.

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Co9S8 microspheres were synthesised by a simple solvothermal route in a binary solution of triethylenetetramine (TETA) and high-purity water (W). Among all the factors that may influence the samples morphologies, volume ratio of TETA and high-purity water are of extreme importance. SEM images show that the microspheres surfaces are coarse with a mean diameter of about 3–5 μm. Their crystallinity can be improved by high temperature annealing. To determine the crystallinity and composition of samples, XRD, EDS and TEM tests were carried out. It can be inferred that these nano/microspheres are amorphous before annealing and crystallized after annealing. Meanwhile a higher element ratio of S:Co can be detected from the annealed samples on EDS results. In the case of magnetism, Co9S8 microspheres turn out to be paramagnetic at room temperature.

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Shibayama, Yoshiyuki, Hirohiko Sato, Toshiaki Enoki et Morinobu Endo. « Disordered Magnetism at the Metal-Insulator Threshold in Nano-Graphite-Based Carbon Materials ». Physical Review Letters 84, n^o 8 (21 février 2000) : 1744–47. http://dx.doi.org/10.1103/physrevlett.84.1744.

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Lata Rao, Manju, et S. Sundar Manoharan. « Magnetism and magneto-transport studies in sonochemically prepared amorphous Co100−xPtx nano alloys ». Solid State Communications 129, n^o 12 (mars 2004) : 781–84. http://dx.doi.org/10.1016/j.ssc.2003.12.036.

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Han Wei, Chang Shu-Quan, Dai Yao-Dong, Chen Da et Huang Yan-Jun. « Magnetism and Mssbauer spectra of cyanide-bridged Ni-Fe nano-molecular-magnets ». Acta Physica Sinica 57, n^o 4 (2008) : 2493. http://dx.doi.org/10.7498/aps.57.2493.

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Goto, T., Y. Kitamoto, K. Matsui, H. Kuroe, A. Endo, T. Hashimoto, T. Hayashita, S. Iguchi et T. Sasaki. « Low-Temperature Magnetism of Gold Nano Particles Contained in Electrochemical Sugar Recognition System ». IEEE Transactions on Magnetics 55, n^o 2 (février 2019) : 1–4. http://dx.doi.org/10.1109/tmag.2018.2872134.

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