Academic literature on the topic 'Magnetism in insulating solids'
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Journal articles on the topic "Magnetism in insulating solids"
Ohtomo, Akira, Suvankar Chakraverty, Hisanori Mashiko, Takayoshi Oshima, and Masashi Kawasaki. "Spontaneous atomic ordering and magnetism in epitaxially stabilized double-perovskites." MRS Proceedings 1454 (2012): 3–13. http://dx.doi.org/10.1557/opl.2012.923.
Full textWang, D. Y., L. Liu, Y. B. Liu, T. Li, Z. Ma, and H. X. Wu. "Heat insulating capacity of Sm2Zr2O7 coating added with high absorptivity solids." Ceramics International 43, no. 2 (February 2017): 2884–87. http://dx.doi.org/10.1016/j.ceramint.2016.11.068.
Full textBrau, A., J. P. Farges, and F. Ali-Sahraoui. "Investigation versus temperature of highly conducting compacted mixtures of insulating reactive solids." Synthetic Metals 27, no. 3-4 (December 1988): 71–76. http://dx.doi.org/10.1016/0379-6779(88)90126-9.
Full textMOHN, P., and K. SCHWARZ. "ITINERANT MAGNETISM IN SOLIDS." International Journal of Modern Physics B 07, no. 01n03 (January 1993): 579–84. http://dx.doi.org/10.1142/s0217979293001219.
Full textCan, T. V., M. A. Caporini, F. Mentink-Vigier, B. Corzilius, J. J. Walish, M. Rosay, W. E. Maas, et al. "Overhauser effects in insulating solids." Journal of Chemical Physics 141, no. 6 (August 14, 2014): 064202. http://dx.doi.org/10.1063/1.4891866.
Full textVerdaguer, Michel, and Alain N. Gleizes. "Magnetism: Molecules to Build Solids." European Journal of Inorganic Chemistry 2020, no. 9 (February 18, 2020): 723–31. http://dx.doi.org/10.1002/ejic.201901274.
Full textEsquinazi, Pablo, Wolfram Hergert, Daniel Spemann, Annette Setzer, and Arthur Ernst. "Defect-Induced Magnetism in Solids." IEEE Transactions on Magnetics 49, no. 8 (August 2013): 4668–74. http://dx.doi.org/10.1109/tmag.2013.2255867.
Full textVarret, François, Kamel Boukheddaden, Epiphane Codjovi, and Antoine Goujon. "Molecular Switchable Solids: towards photo-controlled magnetism." Hyperfine Interactions 165, no. 1-4 (October 26, 2006): 37–47. http://dx.doi.org/10.1007/s10751-006-9244-2.
Full textEsquinazi, P., W. Hergert, D. Spemann, A. Setzer, and A. Ernst. "ChemInform Abstract: Defect-induced Magnetism in Solids." ChemInform 44, no. 23 (May 16, 2013): no. http://dx.doi.org/10.1002/chin.201323229.
Full textEsquinazi, Pablo, Wolfram Hergert, Daniel Spemann, Annette Setzer, and Arthur Ernst. "ChemInform Abstract: Defect-Induced Magnetism in Solids." ChemInform 45, no. 1 (December 12, 2013): no. http://dx.doi.org/10.1002/chin.201401236.
Full textDissertations / Theses on the topic "Magnetism in insulating solids"
Bramwell, Steven Thomas. "Neutron scattering, magnetometry and optical spectroscopy of Rbâ†2CrClâ†4, Rbâ†2CrClâ†3Br, Rbâ†2CrClâ†2Brâ†2 and Rbâ†2CrClâ†2Iâ†2." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279833.
Full textTremas, Laure. "Pre-breakdown and breakdown phenomena in air along insulating solids." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT117.
Full textComprehension and control of phenomena occurring under high voltage at the interface between a gas and a solid insulator.In the context of SF6 replacement in medium-voltage apparatus, a study of mixed electrical insulation (gas (air) / insulating solid) was carried out. The aim is to determine the influence of the nature of the solid on breakdown voltage. For this purpose several materials have been selected such as epoxy / silica (reference material of Schneider Electric), PA6T / 66.GF50 (new material for this application) and several other materials allowing a better understanding of the phenomenon (PTFE, PC, PP, ...). The dielectric characterizations allowed us to measure potential decay, currents and permittivities according to the nature of the materials. From this data, breakdown measurements have been carried out. Two configurations of electric field were tested (parallel and perpendicular to the solid). The "point-to-plane" geometry was selected, allowing the observation of partial discharges before breakdown and therefore a study of the propagation of the discharge and not of the initiation. These measurements show the influence of the solid on the breakdown voltage, with an indirect influence of the nature of the material and its water content. In our configuration, the presence of a solid insulator lowers the dielectric strength. The relative permittivity is the main parameter influencing the breakdown voltage, with a reduction of it in the presence of materials with high permittivity (alumina). It was not possible to establish a link between surface potential decay measurements and breakdown voltages. In order to characterize the development of the electric discharge along the solid insulation, visualizations and transient current measurements were achieved. The visualizations allowed the observation two types of discharges before the breakdown. First, the development of a surface discharge "surface streamer", followed by a discharge in the gas "volume streamer". These observations lead us concluding that streamers leading to breakdown develop predominantly in air above the surface in the parallel field configuration. Current measurements provide information on the initiation of the discharge. There exists a reduction of voltage and initiation time of the discharge in the presence of a solid. Similar results have been obtained for a wide range of materials. However, several low permittivity materials (PTFE, PP) show a different behaviour, with higher and scattered time delay and initiation voltage, similar to those obtain in air without solid. It has been shown that initiation and propagation do not influence the breakdown voltage in poi nt-plane geometry. The transition to breakdown mainly determines the breakdown voltage.Key words: medium voltage apparatus, breakdown voltage, dielectric characterization, streamers, transient currents, visualizations
Grånäs, Oscar. "Theoretical Studies of Magnetism and Electron Correlation in Solids." Doctoral thesis, Uppsala universitet, Materialteori, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-172334.
Full textGreven, Martin. "Neutron scattering study of magnetism in insulating and superconducting Lamellar copper oxides." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/32649.
Full textTothill, J. N. "An investigation into the magnetic properties of certain Mott insulating transition metal compounds close to delocalization." Thesis, University of Bristol, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376619.
Full textCan, Thach V. (Thach Van). "New methods for dynamic nuclear polarization in insulating solids : the Overhauser effect and time domain techniques." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112433.
Full textCataloged from PDF version of thesis.
Includes bibliographical references.
Dynamic nuclear polarization (DNP) is now established as a powerful technique for improving the sensitivity of NMR signals by several orders of magnitude, enabling otherwise impossible experiments. Unfortunately, the enhancements obtained at high magnetic fields (> 9 T) are only a small fraction of the theoretical limit due to the fact that current DNP mechanisms, including the cross effect and solid effect, utilize continuous wave (CW) microwave irradiation, and scale unfavorably with B0. This has motivated us to develop new DNP methods that do not suffer from the same field dependences. Our first attempt resulted in the observation of the Overhauser effect in insulating solids doped with 1,3-bisdiphenylene-2-phenylallyl (BDPA) or sulfonated-BDPA (SA-BDPA) radical. As opposed to all other CW DNP mechanisms, the enhancement of the OE in insulating solids scales favorably with B0, increasing in magnitude in going from 5 T, to 9.4 T, to 14.1 T, and to 18.8 T. This finding sheds a new light on the seemingly well-understood Overhauser effect. Our second approach is to perform time domain or pulsed DNP, which differs fundamentally from CW DNP, and like CP and INEPT transfers, is in principle independent of B0. In particular, we have investigated the performance of two related pulse sequences including the nuclear orientation via electron spin locking (NOVEL) and integrated solid effect (ISE) at magnetic fields ranging from 0.35 T to 3.35 T. The NOVEL pulse sequence relies on a matching condition between the nuclear Larmor frequency and the electron Rabi frequency, resulting in a fast polarization transfer from electron to protons (hundreds of ns time scale). Furthermore, we showed that adding amplitude modulation to the microwave field, analogous to a ramped CP experiment, led to longer mixing time (ps time scale) but improved the enhancement by a factor of 1.4 to 2. Finally, we implemented a new version of the integrated solid effect (ISE) by modulating the microwave frequency instead of sweeping the B0 which is technically challenging in high field superconducting magnets. In comparison to NOVEL, ISE gives similar DNP enhancement even far below the NOVEL condition. Our study sets the foundation for further development of time domain DNP at high fields.
by Thach V. Can.
Ph. D.
Zavattoni, Laëtitia. "Conduction phenomena through gas and insulating solids in HVDC gas insulated substations, and consequences on electric field distribution." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT063/document.
Full textThe emergence of renewable energy leads to a development of new technologies for energy distribution across long distances. The latter will be based on High Voltage Direct Current (HVDC) to avoid capacitance losses. This network is interconnected using Gas Insulated Substation (GIS), which insulation is composed of pressurized gas (SF6) and solid insulators (epoxy resin), which have to withstand HVDC. The electric field is not anymore determined by permittivity of materials, but by resistivities and charge accumulation. In the case of an insulator with an interface with gas, electrons or ions will move across electric field lines and will charge the surface of the solid insulator. The behavior of insulator's properties (gas and solid) constitutes a major challenge for the development of HVDC GIS, to understand the charge relaxation/accumulation mechanisms.In this work, the characterization of solid insulator has first been investigated, based on a low-noise current measurement method. It is thus possible to measure the leakage current through samples and onto their surface, in a pressurized gas, at high electric field and for different temperatures. Those measurements permit to evidence that both volume and surface resistivities are strongly impacted by the increase of temperature and water concentration. It has also been shown that surface resistivity has a non-linear behavior with electric field. A numerical model was developed, to simulate experimental results, showing that the surface properties of the insulator can be implemented.Furthermore, the insulating properties of the gas were also investigated through different electric field geometry (coaxial and uniform), in order to estimate the contribution of current through gas on the charge accumulated on solid insulators. It has been found that a non-negligible current passes through the gas (~pA to nA). To determine the mechanisms responsible for such currents, the latter has been characterized depending on several parameters (electrode surface roughness, material nature, electric field, temperature and relative humidity). It revealed that the variations of currents are strongly impacted by the conditioning of the device and thus by the relative humidity adsorbed on electrodes and enclosure surfaces. In presence of a dry system (dry gas and device) low current were measured (~pA), which increases with temperature. On the contrary, in case of a “wet” system (humid gas and device) the current decreases with increasing temperature. Those results combined with the influence of the electrode roughness, strongly suggest a mechanism of charge injection at the electrode surface, enhanced by water adsorption.Finally, the results obtained for both solid and gaseous insulations are used to develop a numerical model with a shape close to the industrial application, and observe the modification of electric field distribution in presence of water concentration and temperature gradient. An estimation of current flowing through the insulator and gas is thus possible in case of uniform and gradient temperature.In conclusion, this work gives the variations of both volume and surface resistivities in an epoxy resin with temperature and electric field. It also evidences the major influence of relative humidity and temperature on charge injection mechanisms which contribute to the current measured through gas. The extensive characterization performed, enables to develop a simulation which predicts the variations of electric field distribution within an HVDC GIS
Dooley, Roger Benesh Greg. "Surface magnetism of Ni(001), Co(001), and Fe(001) an embedding Green function approach /." Waco, Tex. : Baylor University, 2007. http://hdl.handle.net/2104/5051.
Full textSilva, Júnior José Almeida da. "Estudo geral do efeito magnetoelástico simplificado na variação de entropia magnética." Pós-Graduação em Física, 2013. https://ri.ufs.br/handle/riufs/5326.
Full textNesta dissertacao sao apresentados os principais resultados das propriedades magneticas de ferromagnetos elasticos baseados na analise de diferentes comportamentos do parametro de troca O (ou interacao de troca). Primeiramente, analisou-se a variacao do parametro O com H e T , ou seja, O vH w , O vT w e O vH,T w , obtendo-se uma contribuicao adicional sem origem fisica definida, vH,T w adic { ´S , que ao ser somada a entropia convencional, conv { ´S , resulta na variacao de entropia total, total { ´S , obtida a partir da relacao de Maxwell. Em seguida, nos implementamos um modelo que contem uma energia vibracional na aproximacao de Einstein para altas temperaturas, e outro com a dependencia quadratica da compressibilidade isotermica com a temperatura pela relacao v w 2 o T K T K y a T , de forma a obtermos contribuicoes adicionais com uma origem fisica definida. Tais contribuicoes adicionais sao obtidas por meio do acoplamento magnetoelastico ao reescrever o sistema em termos de um parametro de troca O x que ao ser aplicado no modelo da entropia de troca (proposta por Plaza-Campoy), apresentam as contribuicoes adicionais nas curvas de { ´S eT . Em uma terceira aproximacao, formulamos o parametro O na fenomenologia RKKY, Ë Í o RKKY O O J ç , e analisamos as propriedades magneticas (magnetizacao, parametro de troca, deformacao, entropia magnetica) para regioes diferentes da curva oscilatoria da interacao RKKY. Nesta fenomenologia o parametro de troca varia de forma nao linear com a deformacao, porem quando nos aproximamos de uma regiao quase linear verificamos que o modelo de Bean-Rodbell se aproxima bem do modelo RKKY. Por fim, partimos de uma hamiltoniana de troca generalizada e formulamos uma energia de troca generalizada que ao ser inserida na energia livre de Gibbs, promove uma contribuicao adicional nas propriedades magneticas, evidenciando a importancia do fator v1 4 w na hamiltoniana de troca quando o parametro de troca depende das distancias interatomicas.
Phelan, Daniel Patrick. "Cobaltites : emergence of magnetism and metallicity from a non-magnetic, insulating state /." 2008. http://wwwlib.umi.com/dissertations/fullcit/3283295.
Full textBooks on the topic "Magnetism in insulating solids"
Solid-state magnetism. New York: Van Nostrand Reinhold, 1991.
Find full textCrangle, John. Solid state magnetism. London: E. Arnold, 1991.
Find full textGuimarães, Alberto Passos. Magnetism and magnetic resonance in solids. New York: Wiley, 1998.
Find full textI, Likhtenshteĭn A., and Postnikov A. V, eds. Magnetism and the electronic structure of crystals. Berlin: Springer-Verlag, 1992.
Find full text1946-, Nasu K., ed. New many-body theories on soft x-ray spectroscopy of insulating solids. River Edge, N.J: World Scientific, 2002.
Find full textAuerbach, Assa. Interacting electrons and quantum magnetism. New York: Springer-Verlag, 1994.
Find full textMagnetism Section of the Italian Condensed Matter Group. Meeting. Fundamental and applicative aspects of disordered magnetism: 1987 Meeting of the Magnetism Section of the Italian Condensed Matter Group, 28-30 October 1987, Rome, Italy. Edited by Allia P, Fiorani D, and Lanotte L. Singapore: World Scientific, 1987.
Find full textMagnetism in the solid state: An introduction. 2nd ed. Berlin: Springer, 2006.
Find full textMagnetism in the solid state: An introduction. Berlin: Springer, 2003.
Find full textIntroduction to the physics of electrons in solids. Berlin: Springer, 2011.
Find full textBook chapters on the topic "Magnetism in insulating solids"
Viola Kusminskiy, Silvia. "Magnetism in Solids." In SpringerBriefs in Physics, 25–44. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13345-0_3.
Full textQuinn, John J., and Kyung-Soo Yi. "Magnetism in Solids." In Solid State Physics, 247–71. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-92231-5_9.
Full textJin, Hanmin, and Terunobu Miyazaki. "Magnetism of Solids." In The Physics of Ferromagnetism, 97–173. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25583-0_3.
Full textQuinn, John J., and Kyung-Soo Yi. "Magnetism in Solids." In UNITEXT for Physics, 253–78. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73999-1_9.
Full textThompson, Roy, and Frank Oldfield. "Magnetic properties of solids." In Environmental Magnetism, 3–12. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-011-8036-8_2.
Full textCoey, J. M. D. "Magnetism in Amorphous Solids." In Amorphous Solids and the Liquid State, 433–66. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4757-9156-3_13.
Full textBrown, David W., Bruce J. West, and Katja Lindenberg. "Response of an Insulating Material to Photoexcitation." In Unconventional Photoactive Solids, 105–13. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-0727-3_10.
Full textKaminskii, A. A. "Physics and Spectroscopy of Laser Insulating Crystals with Disordered Structure." In Disordered Solids, 343–78. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-5475-8_14.
Full textVarret, François, Marc Nogues, and Antoine Goujon. "Photomagnetic Properties of Some Inorganic Solids." In Magnetism: Molecules to Materials, 257–95. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2003. http://dx.doi.org/10.1002/9783527620548.ch8.
Full textAlloul, Henri. "Magnetism of Insulators." In Introduction to the Physics of Electrons in Solids, 231–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13565-1_8.
Full textConference papers on the topic "Magnetism in insulating solids"
Rayman, A., A. Sheik Sidthik, V. Kalai Rajan, A. Senthil Kumar, and G. Lakshmanan. "Analysis of ageing characteristics of solid insulation in mixed insulating fluids." In 2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD). IEEE, 2014. http://dx.doi.org/10.1109/aicera.2014.6908158.
Full textMaple, M. Brian. "Superconductivity and magnetism in rare earth transition metal borides." In Boron-rich solids. AIP, 1991. http://dx.doi.org/10.1063/1.40865.
Full textViertiö, H. E., and A. S. Oja. "Nuclear magnetism in copper at nanokelvin temperatures." In Symposium on quantum fluids and solids−1989. AIP, 1989. http://dx.doi.org/10.1063/1.38799.
Full textHetherington, J. H., and M. Roger. "Towards a first principles theory of 3He magnetism." In Symposium on quantum fluids and solids−1989. AIP, 1989. http://dx.doi.org/10.1063/1.38793.
Full textGuan, Kehong, and Jun Wang. "Variation of intrinsic magnetism and magnetic anisotropy with Boron and silicon content in amorphous (Fe80Ni20)78Si22−xBx alloys." In Boron-rich solids. AIP, 1991. http://dx.doi.org/10.1063/1.40802.
Full textIshimoto, H., Hiroshi Fukuyama, T. Fukuda, T. Okamoto, T. Tazaki, K. Sakayori, and S. Ogawa. "Nuclear magnetism of BCC solid 3He in a high magnetic field." In Symposium on quantum fluids and solids−1989. AIP, 1989. http://dx.doi.org/10.1063/1.38791.
Full textChakrabarty, Ayan, Alexander Fisher, Elizabeth F. Dreyer, and Stephen C. Rand. "Four-fold Enhancement of Transverse Optical Magnetism in Unstructured Solids." In CLEO: QELS_Fundamental Science. Washington, D.C.: OSA, 2015. http://dx.doi.org/10.1364/cleo_qels.2015.fw3d.4.
Full textTong, Chung Yan, Nor Akmal Mohd Jamail, Mohd Haris Asyraf Shee Kandar, Nordiana Azlin Othman, and Qamarul Ezani Kamarudin. "Analysis of Electric Field for HDPE-NR Biocomposite using Finite Element Method." In Conference on Faculty Electric and Electronic 2020/1. Penerbit UTHM, 2020. http://dx.doi.org/10.30880/eeee.2020.01.01.004.
Full textPodor, Balint. "Wigner crystal and other insulating phases of two-dimensional electrons in high magnetic fields." In International Conference on Solid State Crystals 2000, edited by Jaroslaw Rutkowski, Jakub Wenus, and Leszek Kubiak. SPIE, 2001. http://dx.doi.org/10.1117/12.425411.
Full textDu, B. X., H. J. Liu, and Xinhui Wang. "Effects of magnetic field on tracking failure of gamma-ray irradiated polymer insulating materials." In 2010 10th IEEE International Conference on Solid Dielectrics (ICSD). IEEE, 2010. http://dx.doi.org/10.1109/icsd.2010.5568016.
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