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Artigos de revistas sobre o assunto "The multiferroic BiFeO3"
Algueró, M., H. Amorín, C. M. Fernández-Posada, O. Peña, P. Ramos, E. Vila e A. Castro. "Perovskite solid solutions with multiferroic morphotropic phase boundaries and property enhancement". Journal of Advanced Dielectrics 06, n.º 02 (junho de 2016): 1630004. http://dx.doi.org/10.1142/s2010135x16300048.
Texto completo da fonteXu, Fang Long, Peng Jun Zhao, Jia Qi Zhang e Xin Qian Xiong. "Fluorine Doping Effects on the Electric Property of BiFeO3 Thin Films". Applied Mechanics and Materials 624 (agosto de 2014): 161–64. http://dx.doi.org/10.4028/www.scientific.net/amm.624.161.
Texto completo da fonteHang, Qi Ming, Xin Hua Zhu, Zhen Jie Tang, Ye Song e Zhi Guo Liu. "Self-Assembled Perovskite Epitaxial Multiferroic BiFeO3 Nanoislands". Advanced Materials Research 197-198 (fevereiro de 2011): 1325–31. http://dx.doi.org/10.4028/www.scientific.net/amr.197-198.1325.
Texto completo da fonteWilliam, R. V., A. Marikani e K. Gangatharan. "Investigation of Multiferroic BiFeO3 Nanorods Using 2-MOE(C3H8O2)-Assisted Citrate Sol–Gel Method". International Journal of Nanoscience 18, n.º 05 (24 de julho de 2019): 1850029. http://dx.doi.org/10.1142/s0219581x18500291.
Texto completo da fonteVerseils, M., K. Beauvois, A. Litvinchuk, S. deBrion, V. Simonet, E. Ressouche, V. Skumryev e M. Gospodinov. "Investigation of High Pressure Phase Transition by Means of Infrared Spectroscopy in the Cairo Frustrated Pentagonal Magnet Bi2Fe4O9". Proceedings 26, n.º 1 (5 de setembro de 2019): 31. http://dx.doi.org/10.3390/proceedings2019026031.
Texto completo da fonteYao, Minghai, Long Cheng, Shenglan Hao, Samir Salmanov, Mojca Otonicar, Frédéric Mazaleyrat e Brahim Dkhil. "Great multiferroic properties in BiFeO3/BaTiO3 system with composite-like structure". Applied Physics Letters 122, n.º 15 (10 de abril de 2023): 152904. http://dx.doi.org/10.1063/5.0139017.
Texto completo da fonteSuastiyanti, Dwita. "Improvement of magnetic properties through the synthesis of ceramic materials with various weight ratios of BaTiO, BiFeO3, and BaFe12O19 with sol-gel method". ASM Science Journal 17 (15 de dezembro de 2022): 1–6. http://dx.doi.org/10.32802/asmscj.2022.1147.
Texto completo da fonteZhang, Runqing, Peiju Hu, Lingling Bai, Xing Xie, Huafeng Dong, Minru Wen, Zhongfei Mu, Xin Zhang e Fugen Wu. "New multiferroic BiFeO3 with large polarization". Physical Chemistry Chemical Physics 24, n.º 10 (2022): 5939–45. http://dx.doi.org/10.1039/d1cp05452j.
Texto completo da fonteBorissenko, Elena, Alexei Bosak, Pauline Rovillain, Maximilien Cazayous, Marco Goffinet, Philippe Ghosez, Dorothée Colson e Michael Krisch. "Lattice dynamics of multiferroic BiFeO3". Acta Crystallographica Section A Foundations of Crystallography 66, a1 (29 de agosto de 2010): s167. http://dx.doi.org/10.1107/s0108767310096248.
Texto completo da fonteGoswami, Sudipta, Dipten Bhattacharya, P. Choudhury, B. Ouladdiaf e T. Chatterji. "Multiferroic coupling in nanoscale BiFeO3". Applied Physics Letters 99, n.º 7 (15 de agosto de 2011): 073106. http://dx.doi.org/10.1063/1.3625924.
Texto completo da fonteTeses / dissertações sobre o assunto "The multiferroic BiFeO3"
Waterfield, Price Noah. "Domains and functionality in multiferroic BiFeO3 films". Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:e8a8f8ff-8510-4fdf-93f4-0037cebc0210.
Texto completo da fonteMasteghin, João Francisco Vieira. "Síntese e propriedades de filmes finos multiferróicos de BiFeO3". Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/153560.
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Foram preparados filmes finos, de Ferrita de Bismuto (BiFeO3), considerado um dos principais multiferróico que são classes de materiais que apresentam ferroeletricidade e ferromagnetismo simultaneamente. Os filmes foram preparados por um rota química chamada de Sol-gel modificado, variando-se a quantidade de % de mol do Bismuto, depositados em substratos de platina Pt/TiO2/SiO2/Si(100), variando-se a temperatura de cristalização entre 400°C a 600°C, com o objetivo de eliminar algumas fases indesejadas encontradas na literatura. Alguns filmes finos passaram pelo tratamento térmico em atmosférica de O2, com o intuito de diminuir a condutividade, causada pelas vacâncias de oxigênio no material. Pelos resultados obtidos foi possível conseguir filmes finos sem as fases indesejadas e com condutividade não tão alta, sendo possível realizar análises elétricas. Assim, tornou-se possível analisar o comportamento da permissividade, impedância e condutividade em função do campo aplicado e da temperatura. Com tais resultados mostra-se a indicação de polarização iônica nestes filmes. Eles apresentam uma energia de ativação parecida com filme finos encontrados na literatura. Além disso, também mostra que o comportamento das propriedades físicas são os mesmos quando varia a temperatura e o campo.
Bismuth Ferrite (BiFeO3) thin films were prepared, considered one of the main multiferroic that are classes of materials that present ferroelectricity and ferromagnetism simultaneously. The films were prepared by a chemical path called modified sol-gel, varying the amount of Bismuth mol percentage, deposited on Pt/TiO2/SiO2/Si(100) platinum substrates, varying the crystallization temperature between 400 °C to 600 °C, with the aim of eliminating some unwanted phases found in literature. Some thin films underwent the thermal treatment in atmospheric O2, in order to reduce the conductivity, caused by the oxygen vacancies in the material. By the results obtained, it was possible to obtain thin films without the undesired phases and with not so high conductivity, being possible to perform electrical analysis. This way it was possible to analyze the behavior of the permissiveness, impedance and conductivity in function of the applied field and temperature. With these results, it is shown an indication of ionic polarization in these films. They have an activation energy similar to thin films found in literature. It is also shown that the behavior of the physical properties are the same when temperature and the field change.
González, Vázquez Otto E. "First-principles investigation of BiFeO3 and related multiferroic materials". Doctoral thesis, Universitat Autònoma de Barcelona, 2012. http://hdl.handle.net/10803/96248.
Texto completo da fonteThis work is about magnetoeltric multiferroics, a relatively new class of ma- terials discovered by the mid of the past century, which involve simultaneously ferroelectricity and magnetism. Perovskite oxide BiFeO3 (BFO) is one of the few multiferroic materials at room temperature. However, as its ferroelectric and anti- ferromagnetic transition temperatures are relatively high (about 1100 K and 640 K, respectively), BFO's electromechanical and magnetoelectric responses are small at ambient conditions. In this thesis we used ab-initio methods, based on density functional theory, to study the basic properties of BFO and proposed possible strategies for enhancing its response. We used rst-principles methods to perform a systematic search for potentially stable phases of BFO. We considered the distortions that are most common among perovskite oxides and found a large number of local minima of the energy. We discussed the variety of low-symmetry structures discovered, as well as the implications of these ndings as regards current experimental work on this compound. We also carried out a study of the Bi1�xLaxFeO3 (BLFO) solid solution formed by multiferroic BFO and the paraelectric antiferromagnet LaFeO3 (LFO). We dis- cussed the structural transformations that BLFO undergoes as a function of La content and the connection of our results with the existing crystallographic stud- ies. We found that, in a wide range of intermediate compositions, BLFO presents competitive phases that are essentially degenerate in energy. Further, our results suggested that, within this unusual morphotropic region, an electric eld might be used to induce various types of paraelectric-to-ferroelectric transitions in the compound. We also discussed BLFO's response properties and showed that they can be signi cantly enhanced by partial substitution of Bi/La atoms in the pure BFO and LFO materials. We analyzed the atomistic mechanisms responsible for such improved properties and showed that the e ects can be captured by simple phenomenological models that treat explicitly the composition x in a Landau-like potential. Furthermore, we performed a rst-principles study of BFO at high pressures. Our work revealed the main structural change in Bi's coordination and suppression of the ferroelectric distortion, electronic spin crossover and metallization, and mag- netic loss of order e ects favored by compression and how they are connected. Our results are consistent with and explain the striking manifold transitions observed experimentally We conclude our thesis presenting the preliminary results of an ongoing project in which we are modeling the energetics of the oxygen octahedra rotations in per- ovskite oxides. The model is tted to the rst-principles results and a careful check of its validity is carried out.
Blouzon, Camille. "Photoelectric and magnetic properties of multiferroic domain walls in BiFeO3". Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066006/document.
Texto completo da fonteAmong all multiferroics, BiFeO3 is a material of choice because its two ordering temperatures are well above 300K. It is a ferroelectric antiferromagnet, and magnetoelectric coupling has been demonstrated in bulk and in thin films. Remarkably, BiFeO3 has the largest polarization of all known ferroelectrics (100µC/cm²). A huge research effort is carried out worldwide to understand and exploit the physical properties of this material which requires to design and tailor BiFeO3 on many scales. In this sense, developing methods and tools to control the domain structure is essential to explore new emergent phenomena arising at domain walls. This is the aim of the present PhD work. Some of the original properties of BiFeO3 have been investigated including its photoelectric and magnetic properties. A particular attention is given to characterize in a parallel fashion bulk properties and domain walls properties, using original techniques of characterization such as Scanning Photocurrent Microscopy (SPCM), scattering synchrotron facilities or high field pulses. SPCM mapping reveals that depolarizing fields in the vicinity of a 180° domain wall can significantly improve the photovoltaic efficiency. Thus domain walls can be generated and precisely positioned in order to tailor the local photovoltaic efficiency. Moreover, X-ray resonant magnetic scattering on thin films with periodic domain structure shows that domain walls generate specific magnetic structures with possible uncompensated magnetization
Thrall, Michael. "The magnetic, electric and structural properties of multiferroic BiFeo3 and BiMnO3". Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492716.
Texto completo da fonteWójcik, Katarzyna. "The synthesis, structure and reactivity of iron-bismuth complexes : Potential Molecular Precursors for Multiferroic BiFeO3". Doctoral thesis, Universitätsbibliothek Chemnitz, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-201000715.
Texto completo da fonteLorenz, Michael, Gerald Wagner, Vera Lazenka, Peter Schwinkendorf, Hiwa Modarresi, Bael Margriet J. Van, André Vantomme, Kristiaan Temst, Oliver Oeckler e Marius Grundmann. "Correlation of magnetoelectric coupling in multiferroic BaTiO3-BiFeO3 superlattices with oxygen vacancies and antiphase octahedral rotations". American Institute of Physics, 2015. https://ul.qucosa.de/id/qucosa%3A31214.
Texto completo da fonteYousfi, Said. "Mécanismes de conduction et effet photovoltaïque dans des films minces de BiFeO3". Electronic Thesis or Diss., Amiens, 2018. http://www.theses.fr/2018AMIE0017.
Texto completo da fonteThe multiferroic BiFeO3 is one of the most studied material because of the room temperature coexisting ferroelectric and antiferromagnetic state. It also shows a photovoltaic response not yet understood. The main objective of this thesis is therefore to investigate the the photovoltaic properties of epitaxial BiFeO3 thin films. Preliminary to photovoltaic studies an investigation of the conduction mechanism has been performed. A polaronic transport with next nearest hopping mechanism is evidenced with a change of regime below 253K. Below 253K variable range hopping transport is observed and involves defects states near the Fermi level. This transport behavior seems connected to the photovoltaic response and change observed at 253K in the photo-induced voltage. Interestingly the photovoltaic response is induced by the ferroelectric state and we demonstrate a switchable photovoltaic effect by an applied electric field. In order to artificially reproduce the domain structure involved in the photovoltaic effect in BiFeO3 BiFeO3/SrRuO3 superlattices have been fabricated and a preliminary structural investigation is presented. A structural change is evidenced from a rhombohedral structure to pseudo-tetragonal state in the superlattices with variable periodicities and we attribute this transition to the influence of the induced in-plane elastic strain
Jarrier, Romain. "Influence de la stœchiométrie sur les propriétés physiques du multiferroïque BiFeO3". Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00676879.
Texto completo da fonteKavanagh, Christopher M. "Synthesis and structure-property relationships in rare earth doped bismuth ferrite". Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/3555.
Texto completo da fonteCapítulos de livros sobre o assunto "The multiferroic BiFeO3"
Guerra, J. D. S., Madhuparna Pal, G. S. Dias, I. A. Santos, R. Guo e A. S. Bhalla. "Low Temperatures Dielectric Anomaly in BiFeO3 -Based Multiferroic Ceramics". In Processing and Properties of Advanced Ceramics and Composites VII, 77–86. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119183860.ch9.
Texto completo da fonteMuneeswaran, Muniyandi, Mayakrishnan Gopiraman, Shanmuga Sundar Dhanabalan, N. V. Giridharan e Ali Akbari-Fakhrabadi. "Multiferroic Properties of Rare Earth-Doped BiFeO3 and Their Spintronic Applications". In Metal and Metal Oxides for Energy and Electronics, 375–95. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53065-5_11.
Texto completo da fonteDoley, Hage, Anuradha Panigrahi e Pinaki Chakraborty. "Study of Electrical and Magnetic Properties of Multiferroic Composite (BiFeO3)x(Ba5RTi3V7O30)1−x". In Advances in Intelligent Systems and Computing, 451–59. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-3329-3_42.
Texto completo da fonteThota, Harikishan, Ashish Garg, Brajesh Pandey e H. C. Verma. "Effect of cooling conditions on the magnetic structure of multiferroic BiFeO3 synthesized by mechanical activation". In ICAME 2007, 1167–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-78697-9_160.
Texto completo da fonteKhasbulatov, S. V., L. A. Shilkina, S. I. Dudkina, A. A. Pavelko, K. P. Andryushin, S. N. Kallaev, G. G. Gadjiev et al. "Crystal Structure, Dielectric and Thermophysical Properties of Multiferroics BiFeO3/REE". In Springer Proceedings in Physics, 305–17. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-19894-7_23.
Texto completo da fonteRaevskaya, S. I., S. P. Kubrin, A. V. Pushkarev, N. M. Olekhnovich, Y. V. Radyush, V. V. Titov, H. Chen et al. "The Effect of Cr-Doping on the Structure, Dielectric and Magnetic Properties of BiFeO3 and Pb(Fe0.5Sb0.5)O3 Multiferroics". In Springer Proceedings in Physics, 195–208. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78919-4_16.
Texto completo da fonteChand Verma, Kuldeep. "Synthesis and Characterization of Multiferroic BiFeO3 for Data Storage". In Bismuth - Fundamentals and Optoelectronic Applications. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94049.
Texto completo da fonteChand Verma, Kuldeep, e Manpreet Singh. "Processing Techniques with Heating Conditions for Multiferroic Systems of BiFeO3, BaTiO3, PbTiO3, CaTiO3 Thin Films". In Thermoelectricity [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.101122.
Texto completo da fonte"First-Principles Calculations for Multiferroic BiFeO3". In Multiferroic Materials, 297–316. Boca Raton, FL : CRC Press, Taylor & Francis Group, [2017] |: CRC Press, 2016. http://dx.doi.org/10.1201/9781315372532-20.
Texto completo da fonteSeidel, J., e R. Ramesh. "Electronics Based on Domain Walls". In Domain Walls, 340–50. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198862499.003.0015.
Texto completo da fonteTrabalhos de conferências sobre o assunto "The multiferroic BiFeO3"
Rader, Claire, Megan F. Nielson, Brittany E. Knighton, Aldair Alejandro e Jeremy A. Johnson. "2D THz Measurement of Magnon-Phonon Coupling in Multiferroic BiFeO3". In CLEO: Fundamental Science. Washington, D.C.: Optica Publishing Group, 2023. http://dx.doi.org/10.1364/cleo_fs.2023.ff1g.4.
Texto completo da fonteSong, Wei, Dong Zhang, Zhi Sun, Bai Han, Li-juan He, Xuan Wang e Qing-quan Lei. "Preparation and characterization of multiferroic BiFeO3". In 2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials (ICPADM). IEEE, 2012. http://dx.doi.org/10.1109/icpadm.2012.6318899.
Texto completo da fonteKhomchenko, V. A., N. A. Sobolev, M. Kopcewicz, M. Maglione e Y. G. Pogorelov. "Heterovalent A-site doping of multiferroic BiFeO3". In 2008 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF). IEEE, 2008. http://dx.doi.org/10.1109/isaf.2008.4693778.
Texto completo da fontePaul, Pralay, Tuhin Kumar Maji, Krishna Kanhaiya Tiwari, Balaji Mandal, A. K. Rajarajan, Ranu Bhatt, Debjani Karmakar e T. V. C. Rao. "Theoretical and experimental study of multiferroic BiFeO3". In DAE SOLID STATE PHYSICS SYMPOSIUM 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4980778.
Texto completo da fonteKnighton, Brittany E., Megan F. Nielson, Aldair Alejandro, Lauren M. Davis, R. Tanner Hardy, Min-Cheol Lee, Aiping Chen, Rohit P. Prasankumar e Jeremy A. Johnson. "Two-dimensional THz Spectroscopy of Multiferroic BiFeO3". In 2020 45th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz). IEEE, 2020. http://dx.doi.org/10.1109/irmmw-thz46771.2020.9370699.
Texto completo da fonteRieck, Jan, Cynthia Quinteros, Mart Salverda e Beatriz Noheda. "Multiferroic BiFeO3 Domain Walls as Memristive Devices". In Materials, devices and systems for neuromorphic computing 2022. València: Fundació Scito, 2022. http://dx.doi.org/10.29363/nanoge.matnec.2022.016.
Texto completo da fonteI-Wei Chu, Kai Su, Ronald Pirich e Nan-Loh Yang. "Three approaches for the synthesis of multiferroic BiFeO3". In 2010 IEEE Long Island Systems, Applications and Technology Conference. IEEE, 2010. http://dx.doi.org/10.1109/lisat.2010.5478337.
Texto completo da fontePiccone, B. E., J. E. Blendell e R. E. Garcia. "Response surface measurement for BiFeO3-CoFe2O4 multiferroic nanocomposite". In 2008 17th IEEE International Symposium on the Applications of Ferroelectrics (ISAF). IEEE, 2008. http://dx.doi.org/10.1109/isaf.2008.4693782.
Texto completo da fonteKatoch, Rajesh, Rajeev Gupta e Ashish Garg. "Structural investigation of multiferroic BiFeO3-PbTiO3 solid solution". In SOLID STATE PHYSICS: Proceedings of the 58th DAE Solid State Physics Symposium 2013. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4873102.
Texto completo da fonteSheikh, Javed R., Vishwajit M. Gaikwad e Smita A. Acharya. "Investigation of multiferroic behavior on flakes-like BiFeO3". In DAE SOLID STATE PHYSICS SYMPOSIUM 2015. Author(s), 2016. http://dx.doi.org/10.1063/1.4948196.
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