Above-room-temperature polar magnets are of interest due to their practical applications in spintronics. Here we present a strategy to design high-temperature polar magnetic oxides in the corundum-derived A2BB'O6 family, exemplified by the non-centrosymmetric (R3) Ni3TeO6-type Mn(2+)2Fe(3+)Mo(5+)O6, which shows strong ferrimagnetic ordering with TC = 337 K and demonstrates structural polarizati...

Electric dipole engineering is now an emerging technology for high electron-mobility transistors, ferroelectric random access memory and multiferroic devices etc. Although various studies to provide insight into dipole moment behaviour, such as phase transition, order and disorder states, have been reported, macroscopic spontaneous polarization has been mainly discussed so far. Here, visualizat...

– Epitaxial thin films of multiferroic perovskite BiMnO3 were synthesized on SrTiO3 substrates, and orbital ordering and magnetic properties of the thin films were investigated. The ordering of the Mn eg orbitals at a wave vector ( 1 4 1

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Session 1 Chair: Juana Moreno (Louisiana State University) 9:15-10:00 Alexey Rubtsov (Moscow State University & Russian Quantum Center, Russia), Towards a numerically exact description of correlated open quantum systems 10:00-10:15 Discussion 10:15-11:00 Salvatore R. Manmana (Universität Göttingen), Matrix product state formulation of frequency-space dynamics at finite temperatures 11:00-11:15 ...

Intrinsic polarization of ferroelectrics (FE) helps separate photon-generated charge carriers thus enhances photovoltaic effects. However, traditional FE with transition-metal cations (M) of d⁰ electron in MO₆ network typically has a band gap (E(g)) exceeding 3.0 eV. Although a smaller E(g) (2.6 eV) can be obtained in multiferroic BiFeO₃, the value is still too high for optimal solar energy app...

The number of magnetoelectric multiferroic materials reported to date is scarce, as magnetic structures that break inversion symmetry and induce an improper ferroelectric polarization typically arise through subtle competition between different magnetic interactions. The (NH4)2[FeCl5(H2O)] compound is a rare case where such improper ferroelectricity has been observed in a molecular material. We...

Title of Document: BOTTOM-UP MULTIFERROIC NANOSTRUCTURES. Shenqiang Ren, Doctor of Philosophy, 2009 Directed By: Professor Manfred Wuttig Department of Materials Science and Engineering Multiferroic and especially magnetoelectric (ME) nanocomposites have received extensive attention due to their potential applications in spintronics, information storage and logic devices. The extrinsic ME coupl...

In magnetically ordered systems the Heisenberg exchange interaction between neighboring spins favors collinear alignment such as that seen in ferromagnets and antiferromagnets. The inclusion of antisymmetric exchange, also known Dzyaloshinskii--Moriya (DMI), promotes an orthogonal arrangement is subject this review. DMI responsible for chiral magnetism, spin-textured skyrmions, magnetoelectric ...