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Given the paucity of single phase multiferroic materials (with large ferromagnetic moment), composite systems seem an attractive solution in the quest to realize magnetoelectric cou-pling between ferromagnetic and ferroelectric order…

Mesoscale and Nanoscale Physics · Physics 2014-09-15 P. Jain , Q. Wang , M. Roldan , A. Glavic , V. Lauter , C. Urban , Z. Bi , T. Ahmed , J. Zhu , M. Varela , Q. Jia , M. R. Fitzsimmons

Epitaxial bilayered thin films consisting of La0.6Sr0.4MnO3 (LSMO) and 0.7 Pb(Mg1/3Nb2/3)O3 0.3 PbTiO3 (PMN-PT) layers of relatively different thicknesses were fabricated on LaNiO3 coated LaAlO3 (100) single crystal substrates by pulsed…

Materials Science · Physics 2011-06-29 Ayan Roy Chaudhuri , S. B. Krupanidhi , P. Mandal , A. Sundaresan

Epitaxial Mn-doped BiFeO3 (MBFO) thin films were grown on GaAs (001) substrate with SrTiO3 (STO) buffer layer by pulsed laser deposition. X-ray diffraction results demonstrate that the films show pure (00l) orientation, and…

Materials Science · Physics 2013-09-18 G. Y. Gao , Z. B. Yang , W. Huang , H. Z. Zeng , Y. Wang , H. L. W. Chan , W. B. Wu , J. H. Hao

Topological insulators (TIs) are a promising class of materials for manipulating the magnetization of an adjacent ferromagnet (FM) through the spin-orbit torque (SOT) mechanism. However, current studies combining TIs with conventional FMs…

Magnetic interfaces and the phenomena arising from them drive both the design of modern spintronics and fundamental research. Recently, it was revealed that through designing magnetic frustration in configurationally complex entropy…

Commencing from the centrosymmetric MnRMnSbO$_6$ compound, we explore the realm of magnetic polar double-double perovskite oxides characterized by significant ferroelectric polarization. Employing symmetry operations, first-principles…

Materials Science · Physics 2024-03-11 Monirul Shaikh , Duo Wang , Saurabh Ghosh

Multiferroic BiFeO3 epitaxial films with thickness ranging from 40 nm to 960 nm were grown by pulsed laser deposition on SrTiO3 (001) substrates with SrRuO3 bottom electrodes. X-ray characterization shows that the structure evolves from…

Materials Science · Physics 2009-11-13 Dae Ho Kim , Ho Nyung Lee , Michael D. Biegalski , Hans M. Christen

We report the structural and physical properties of epitaxial Bi2FeCrO6 thin films on epitaxial SrRuO3 grown on (100)-oriented SrTiO3 substrates by pulsed laser ablation. The 300 nm thick films exhibit both ferroelectricity and magnetism at…

Creating and manipulating spin polarization in low-dimensional electron systems (such as two-dimensional electron gases) is fundamentally essential for spintronic applications, which is yet a challenge to date. In this work, we establish…

Strongly Correlated Electrons · Physics 2020-01-22 Ruyi Zhang , Yujuan Pei , Yang Song , Jiachang Bi , Jingkai Yang , Junxi Duan , Yanwei Cao

Highly-strained BiFeO3 exhibits a "tetragonal-like, monoclinic" crystal structure found only in epitaxial films (with an out-of-plane lattice parameter exceeding the in-plane value by >20%). Previous work has shown that this phase is…

Materials Science · Physics 2011-08-17 Wolter Siemons , Michael D. Biegalski , Joong Hee Nam , Hans M. Christen

Temperature dependent magnetometry and transport measurements on epitaxial Fe3O4 films grown on BaTiO3(100) single crystals by molecular beam epitaxy show a series of discontinuities, that are due to changes in the magnetic anisotropy…

Materials Science · Physics 2010-03-09 C. A. F. Vaz , J. Hoffman , A. -B. Posadas , C. H. Ahn

Magnetic materials with kagome crystal structure exhibit rich physics such as frustrated magnetism, skyrmion formation, topological flat bands, and Dirac/Weyl points. Until recently, most studies on kagome magnets have been performed on…

Ferroelectric materials display exotic polarization textures at the nanoscale that could be used to improve the energetic efficiency of electronic components. The vast majority of studies were conducted in two dimensions on thin films, that…

Cupric oxide is multiferroic at unusual high temperatures. From density functional calculations we find that the low-T magnetic phase is paraelectric and the higher-T one ferroelectric, with a size and direction of polarization in good…

Strongly Correlated Electrons · Physics 2012-05-22 Gianluca Giovannetti , Sanjeev Kumar , Alessandro Stroppa , Jeroen van den Brink , Silvia Picozzi , Jose Lorenzana

Bulk BiMnO$_3$ is the only transition-metal perovskite oxide that is insulating and shows strong ferromagnetism. This distinctive behavior would make it a promising candidate as a magnetoelectric multiferroic if it was also a polar…

Materials Science · Physics 2015-03-31 Oswaldo Diéguez , Jorge Íñiguez

Ferroelectric domain walls are nanoscale objects that can be created, positioned, and erased on demand. They often embody functional properties that are distinct from the surrounding bulk material. Enhanced conductivity, for instance, is…

Materials Science · Physics 2024-10-29 Elzbieta Gradauskaite , Chia-Jung Yang , Shovon Pal , Manfred Fiebig , Morgan Trassin

We demonstrate the integration of a thin BaTiO$_3$ (BTO) membrane with monolayer MoSe$_2$ in a dual gate device that enables in-situ manipulation of the BTO ferroelectric polarization with a voltage pulse. While two-dimensional (2D)…

Ferroics, characterized by a broken symmetry state with nonzero elastic, polar, or magnetic order parameters $\vec{u}$, are recognized platforms for staging and manipulating topologically-protected structures as well as for detecting…

Materials Science · Physics 2018-10-31 Antonio B. Mei , Ramamoorthy Ramesh , Darrell G. Schlom

Recent realizations of ultrathin freestanding perovskite oxides offer a unique platform to probe novel properties in two-dimensional oxides. Here, we observed a giant flexoelectric response in freestanding BiFeO3 and SrTiO3 in their bent…

We report on epitaxial growth of single-phase [Pb(Zr0.57Ti0.43)O3]0.8[Pb(Fe2/3W1/3)O3]0.2 (PZT-PFW) solid-solution thin films using pulsed laser deposition. X-ray diffraction measurements reveal that the films have a tetragonal structure.…

Materials Science · Physics 2010-01-28 D. Lee , Y. -A. Park , S. M. Yang , T. K. Song , Y. Jo , N. Hur , J. H. Jung , T. W. Noh
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