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A continuum approach to study magnetoelectric multiferroic $\mathrm{BiFeO}_3$ (BFO) is proposed. Our modeling effort marries the ferroelectric (FE) phase field method and micromagnetic simulations in order to describe the entire…

Materials Science · Physics 2024-03-25 John Mangeri , Davi Rodrigues , Sudipta Biswas , Monica Graf , Olle Heinonen , Jorge Íñiguez

The recently discovered multiferroic material CdCr2S4 shows a coexistence of ferromagnetism and relaxor ferroelectricity together with a colossal magnetocapacitive effect. The complex dielectric permittivity of this compound and of the…

Strongly Correlated Electrons · Physics 2009-11-11 J. Hemberger , P. Lunkenheimer , R. Fichtl , S. Weber , V. Tsurkan , A. Loidl

Nano/micro-scale mechanical properties of multiferroic materials can be controlled by the external magnetic or electric field due to the coupling interaction. For the first time, a modularized multi-field nanoindentation apparatus for…

Instrumentation and Detectors · Physics 2013-06-25 Hao Zhou , Yongmao Pei , Hu Huang , Hongwei Zhao , Faxin Li , Daining Fang

First principles approaches have been successful in solving many-body Hamiltonians for real materials to an extent when correlations are weak or moderate. As the electronic correlations become stronger often embedding methods based on first…

Recent discovery of new materials for thermoelectric energy conversion is enabled by efficient prediction of materials' performance from first-principles, without empirically fitted parameters. The novel simplified approach for computing…

Materials Science · Physics 2018-05-02 Georgy Samsonidze , Boris Kozinsky

The ground-state structural and electronic properties of ferroelectric BiFeO$_3$ are calculated using density functional theory within the local spin-density approximation and the LSDA+U method. The crystal structure is computed to be…

Materials Science · Physics 2007-05-23 J. B. Neaton , C. Ederer , U. V. Waghmare , N. A. Spaldin , K. M. Rabe

Ferroelectromagnets - compounds with ferroelectric and magnetic orderings - were discovered about fifty years ago. They are of great interest due to the possibility of mutual control of electric (magnetic) properties by magnetic (electric)…

Materials Science · Physics 2010-12-10 I. E. Chupis

Nowdays, multiferroic materials with magnetoelectric coupling have many real-world applications in the fields of novel memory devices. It is challenging is to create multiferroic materials with strongly coupled ferroelectric and…

Materials Science · Physics 2018-05-29 Deobrat Singh , Sanjeev K. Gupta , Haiying He , Yogesh Sonvane

Density-functional calculations are carried out to investigate incommensurate magnetic structures and ferroelectric polarization in newly discovered multiferroic material MnI$_2$. The exchange interactions among local moments on Mn are…

Strongly Correlated Electrons · Physics 2013-05-30 Xianxin Wu , Yingxiang Cai , Qing Xie , Hongming Weng , Heng Fan , Jiangping Hu

Various phenomena related to inhomogeneous magnetoelectric interaction are considered. The interrelation between spatial modulation of order parameter and electric polarization, known as flexoelectric effect in liquid crystals, in the case…

Materials Science · Physics 2010-01-05 Alexander P. Pyatakov , Anatoly K. Zvezdin

We present a theoretical study of the onset of electric polarization close to a surface in magnetic materials and in thin films and multilayers. We consider two different paths that lead to the onset of multiferroic behavior at the boundary…

Materials Science · Physics 2021-05-12 Ahmed R. Tarkhany , Marco Discacciati , Joseph J. Betouras

Controlling multiferroic behavior in materials will enable the development of a wide variety of technological applications. However, the exact mechanisms driving multiferroic behavior are not well understood in most materials. Two such…

Materials Science · Physics 2018-06-27 B. Wolin , X. Wang , T. Naibert , S. L. Gleason , G. J. MacDougall , H. D. Zhou , S. L. Cooper , R. Budakian

Multiferroic materials, in which ferroelectric and magnetic ordering coexist, are of fundamental interest for the development of novel memory devices that allow for electrical writing and non-destructive magnetic readout operation. The…

Materials Science · Physics 2015-05-05 P. S. Wang , W. Ren , L. Bellaiche , H. J. Xiang

Magnetic gels are composite materials, consisting of a polymer matrix and embedded magnetic particles. Those are mechanically coupled to each other, giving rise to the magnetostrictive effects as well as to a controllable overall elasticity…

Soft Condensed Matter · Physics 2023-06-21 Segun Goh , Andreas M. Menzel , René Wittmann , Hartmut Löwen

Multiferroics are singular materials that can display simultaneously electric and magnetic orders. Some of them can be ferroelectric and ferromagnetic and, for example, provide the unique opportunity of encoding information independently in…

The successful exfoliation of graphene from graphite has brought significant attention to predicting new two-dimensional (2D) materials that can be realized experimentally. As a consequence, first-principles studies of novel 2D materials…

Materials Science · Physics 2022-11-08 Asha Yadav , Carlos Mera Acosta , Gustavo M. Dalpian , Oleksandr I. Malyi

We present a perspective on the status of antiferromagnetism in two-dimensional (2D) materials. Various types of spin-compensated orders are discussed and include non-collinear order, spin spirals and altermagnetism. Spin-orbit effects…

Materials Science · Physics 2024-08-09 Thomas Olsen

Perovskite structure SrMnO$_3$ is a rare example of a multiferroic material where strain-tuning and/or cation substitution could lead to coinciding magnetic and ferroelectric ordering temperatures, which would then promise strong…

Materials Science · Physics 2018-10-24 Alexander Edström , Claude Ederer

Ferroelectric and two-dimensional materials are both heavily investigated classes of electronic materials. This is unsurprising since they both have superlative fundamental properties and high-value applications in computing, sensing etc.…

Applied Physics · Physics 2024-05-10 Chloe Leblanc , Seunguk Song , Deep Jariwala

Many technological applications are based on electric or magnetic order of materials, for instance magnetic memory. Multiferroics are materials which exhibit electric and magnetic order simultaneously. Due to the coupling of electric and…