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228 p, 6.9 MB |
Ferromagnetic insulator thin films based on Ni/Mn double perovskites
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Bernal Salamanca, Mónica Emperatriz ;
Balcells Argemí, Lluís, dir. ;
Konstantinovic, Zorica, dir. ;
Skumryev, Vassil, dir.
Els òxids de dobles perovskita de la família R2NiMnO6 (RNMO, on R és un element de terres rares) han rebut una atenció considerable com aïllants ferromagnètics (FM-Is). Les seves propietats físiques multifuncionals els converteixen en candidats potencials per a aplicacions tecnològiques en dispositius espintrònics, com condensadors magnetodielèctrices i barreres túnel de filtres d'espín. [...]
Los óxidos de dobles perovskita de la familia R2NiMnO6 (RNMO, donde R es un elemento de tierras raras) han recibido una atención considerable como aislantes ferromagnéticos (FM-Is). Sus propiedades físicas multifuncionales los convierten en candidatos potenciales para aplicaciones tecnológicas en dispositivos espintrónicos, como condensadores magnetodieléctricos y barreras de túnel de filtros de espín. [...]
Double perovskite oxides of the R2NiMnO6 family (RNMO, where R is a rare earth element) have received considerable attention as ferromagnetic insulators (FM-Is). Their multifunctional physical properties make them potential candidates for technological applications in spintronic devices, such as magnetodielectric capacitors and spin filters tunnel barriers. [...]
2022
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8 p, 554.4 KB |
Proof of the elusive high-temperature incommensurate phase in CuO by spherical neutron polarimetry
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Qureshi, Navid (Institut Laue Langevin) ;
Ressouche, Eric (Université Grenoble Alpes) ;
Mukhin, Alexander (Prokhorov General Physics Institute) ;
Gospodinov, Marin (Bulgarian Academy of Sciences. Institute of Solid State Physics) ;
Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física)
After three decades of research on CuO, the AF3 phase is proven by neutrons, which clears up the mystery of symmetry-broken phases. CuO is the only known binary multiferroic compound, and due to its high transition temperature into the multiferroic state, it has been extensively studied. [...]
2020 -  10.1126/sciadv.aay7661
Science advances, Vol. 6, issue 7 (Feb. 2020) , eaay7661
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4.
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10 p, 1.8 MB |
Monolithic integration of room-temperature multifunctional BaTiO 3 -CoFe 2 O 4 epitaxial heterostructures on Si(001)
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Scigaj, Mateusz (Universitat Autònoma de Barcelona. Departament de Física) ;
Dix, Nico (Institut de Ciència de Materials de Barcelona) ;
Gázquez Alabart, Jaume (Institut de Ciència de Materials de Barcelona) ;
Varela del Arco, María (Universidad Complutense de Madrid) ;
Fina, Ignasi (Institut Català de Nanociència i Nanotecnologia) ;
Domingo Marimon, Neus (Institut Català de Nanociència i Nanotecnologia) ;
Herranz Casabona, Gervasi (Institut de Ciència de Materials de Barcelona) ;
Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ;
Fontcuberta, Josep (Institut de Ciència de Materials de Barcelona) ;
Sánchez Barrera, Florencio (Institut de Ciència de Materials de Barcelona)
The multifunctional (ferromagnetic and ferroelectric) response at room temperature that is elusive in single phase multiferroic materials can be achieved in a proper combination of ferroelectric perovskites and ferrimagnetic spinel oxides in horizontal heterostructures. [...]
2016 - 10.1038/srep31870
Scientific reports, Vol. 6 (August 2016) , art. 31870
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5.
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8 p, 1.3 MB |
Magnetoelectric effect and phase transitions in CuO in external magnetic fields
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Wang, Zhaosheng (Helmholtz-Zentrum Dresden-Rossendorf) ;
Qureshi, Navid (Institut Laue Langevin) ;
Yasin, Shadi (Helmholtz-Zentrum Dresden-Rossendorf) ;
Mukhin, Alexander (Institut obshcheĭ fiziki im. A.M. Prokhorova) ;
Ressouche, Eric (Institute for Nanoscience and Cryogenics. Service de Physique Statistique, Magnétisme et Supraconductivité) ;
Zherlitsyn, Sergei (Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf) ;
Skourski, Yurii (Helmholtz-Zentrum Dresden-Rossendorf) ;
Geshev, Julian (Universitat Autònoma de Barcelona. Departament de Física) ;
Ivanov, Vsevolod (Institut obshcheĭ fiziki im. A.M. Prokhorova) ;
Gospodinov, Marin (Bulgarian Academy of Sciences. Institute of Solid State Physics) ;
Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física)
Apart from being so far the only known binary multiferroic compound, CuO has a much higher transition temperature into the multiferroic state, 230 K, than any other known material in which the electric polarization is induced by spontaneous magnetic order, typically lower than 100 K. [...]
2016 - 10.1038/ncomms10295
Nature communications, Vol. 7 (Jan. 2016) , art. 10295
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7 p, 551.2 KB |
Discrimination between coupling and anisotropy fields in exchange-biased bilayers
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Geshev, Julian (Universidade Federal do Rio Grande do Sul. Instituto de Física) ;
Nicolodi, S. (Universidade Federal do Rio Grande do Sul. Instituto de Física) ;
Silva, R. B. da (Universidade Federal do Pampa. Centro de Ciências Exatas e Tecnológicas) ;
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ;
Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ;
Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física)
In the framework of models that assume planar domain wall formed at the antiferromagnetic part of the interface of exchange-biased bilayers, one cannot distinguish between the cases of high or low ratios between the coupling and the antiferromagnet's anisotropy fields by using hysteresis loop measurement, ferromagnetic resonance, anisotropic magnetoresistance, or ac susceptibility techniques applied on one and the same sample. [...]
2009 - 10.1063/1.3079795
Journal of applied physics, Vol. 105, Núm. 5 (March 2009) , p. 53903-1-053903-6
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4 p, 652.0 KB |
Shockwave synthesis of a thallium-based superconductor with a novel defect microstructure
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Iqbal, Z. (Allied-Signal Inc. (Morristown, New Jersey)) ;
Thadhani, N. N. (New Mexico Institute of Mining and Technology. Center for Explosives Technology Research) ;
Chawla, N. (New Mexico Institute of Mining and Technology. Center for Explosives Technology Research) ;
Ramakrishna, B. L. (Arizona State University. Department of Chemistry and Center for Solid State Science) ;
Sharma, R. (Arizona State University. Department of Chemistry and Center for Solid State Science) ;
Rao, K. V. (Kungl. Tekniska högskolan. Department of Condensed Matter Physics) ;
Skumryev, Vassil (Kungl. Tekniska högskolan. Department of Condensed Matter Physics) ;
Reidinger, F. (Allied-Signal Inc. (Morristown, New Jersey)) ;
Eckhardt, H. (Allied-Signal Inc. (Morristown, New Jersey)) ;
American Physical Society
We report the shock-wave synthesis at a yield ≳80% by volume of the single copper layer thalliumsuperconductor of composition Tl2Ba2CuO6. The as-synthesized material displays zero resistance near 55 K and a diamagnetic onset to bulk superconductivity at 70 K. [...]
1989 - 10.1063/1.102360
Applied physics letters, Vol. 55, Issue 22 (November 1989) , p. 2339-2341
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4 p, 597.2 KB |
Microstructural characterization of L10 FePt/MgO nanoparticles with perpendicular anisotropy
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Zhang, Y. (University of Delaware. Department of Physics and Astronomy) ;
Wan, J. (University of Delaware. Department of Physics and Astronomy) ;
Skumryev, Vassil (University of Delaware. Department of Physics and Astronomy) ;
Stoyanov, S. (University of Delaware. Department of Physics and Astronomy) ;
Huang, Y. (University of Delaware. Department of Physics and Astronomy) ;
Hadjipanayis, G. C. (University of Delaware. Department of Physics and Astronomy) ;
Weller, D. (Seagate Technology (Pittsburgh, Estats Units d'Amèrica)) ;
American Physical Society
L10 FePt nanoparticles with perpendicular magnetic anisotropy were fabricated on a heated MgO substrate by using an atomic deposition technique. The microstructure of the FePt nanoparticles was studied by transmission electron microscopy and high resolution transmission electron microcopy. [...]
2004 - 10.1063/1.1827348
Applied physics letters, Vol. 85, Issue 22 (December 2004) , p. 5343-5345
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4 p, 539.9 KB |
Exchange biasing and electric polarization with YMnO3
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Martí Rovirosa, Xavier (Institut de Ciència de Materials de Barcelona) ;
Sánchez Barrera, Florencio (Institut de Ciència de Materials de Barcelona) ;
Hrabovsky, D. (Institut de Ciència de Materials de Barcelona) ;
Fábrega Sánchez, Lourdes (Institut de Ciència de Materials de Barcelona) ;
Ruyter, A. (Institut de Ciència de Materials de Barcelona) ;
Fontcuberta, Josep (Institut de Ciència de Materials de Barcelona) ;
Laukhin, V. (Institut de Ciència de Materials de Barcelona) ;
Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ;
García-Cuenca Varona, María Victoria (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ;
Ferrater Martorell, Cèsar (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ;
Varela Fernández, Manuel, 1956- (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ;
Vilà, A. (Universitat de Barcelona. Departament d'Electrònica) ;
Lüders, Ulrike Anne (LNMH ONERA-CNRS (Toulouse, França)) ;
Bobo, Jean-François (LNMH ONERA-CNRS (Toulouse, França)) ;
American Physical Society
We report on the growth and functional characterizations of epitaxialthin films of the multiferroic YMnO3. We show that using Pt as a seed layer on SrTiO3(111) substrates, epitaxialYMnO3films (0001) textured are obtained. [...]
2006 - 10.1063/1.2234285
Applied physics letters, Vol. 89, Issue 3 (July 2006) , p. 032510/1-032510/3
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10.
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4 p, 484.5 KB |
Strain tuned magnetoelectric coupling in orthorhombic YMnO3 thin films
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Martí Rovirosa, Xavier (Institut de Ciència de Materials de Barcelona) ;
Fina, Ignasi (Institut de Ciència de Materials de Barcelona) ;
Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ;
Ferrater Martorell, Cèsar (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ;
Varela Fernández, Manuel, 1956- (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ;
Fábrega Sánchez, Lourdes (Institut de Ciència de Materials de Barcelona) ;
Sánchez Barrera, Florencio (Institut de Ciència de Materials de Barcelona) ;
Fontcuberta, Josep (Institut de Ciència de Materials de Barcelona)
Orthorhombic YMnO3epitaxialthin films were grown on Nb(0. 5%)-doped SrTiO3(001) substrates. Film's thickness was varied to tune the epitaxial strain. Structural and magnetic properties are well correlated, presenting a more pronounced ferromagnetic behavior as the unit cell becomes more distorted. [...]
2009 - 10.1063/1.3238287
Applied physics letters, Vol. 95, Issue 14 (October 2009) , p. 142903/1-142903/3
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