Symmetry and magnetoelectric effects in garnet crystals and films

A. I. Popov, D. I. Plokhov, and A. K. Zvezdin
Phys. Rev. B 90, 214427 – Published 17 December 2014

Abstract

The magnetoelectricity of garnets is considered by means of a symmetry and quantum mechanical combined analysis. It is shown that the magnetoelectric effect is not realized in most garnets although the necessary condition of the crystal magnetic structure antisymmetry in them is held at low temperatures. Nevertheless, the effect can be observed in some garnets as well as other odd effects, namely, the piezomagnetic effect, the magnetic field evoked piezoelectric one, etc. It is also discovered that magnetic fields can induce specific antiferroelectric structures in garnet crystals and produce electric polarization in epitaxial films. The polarization can also be caused in a bulk crystal by an inhomogeneous magnetic field.

  • Figure
  • Received 28 July 2014
  • Revised 3 November 2014

DOI:https://doi.org/10.1103/PhysRevB.90.214427

©2014 American Physical Society

Authors & Affiliations

A. I. Popov1,2,3,*, D. I. Plokhov1,†, and A. K. Zvezdin1,3,‡

  • 1A. M. Prokhorov General Physics Institute of Russian Academy of Sciences, 38 Vavilov Str., 119991, Moscow, Russia
  • 2National Research University of Electronic Technology, 5 Pas. 4806, 124498, Zelenograd, Moscow, Russia
  • 3Moscow Institute of Physics and Technology, 9 Institutsky Per., 141700, Dolgoprudny, Moscow region, Russia

  • *aip_2001@mail.ru
  • dmitry.plokhov@gmail.com
  • zvezdin@gmail.com

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Issue

Vol. 90, Iss. 21 — 1 December 2014

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