Magnetic control of electric polarization in the noncentrosymmetric compound (Cu,Ni)B2O4

N. D. Khanh, N. Abe, K. Kubo, M. Akaki, M. Tokunaga, T. Sasaki, T. Arima

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The weak ferromagnetic moment in Ni-doped CuB2O4 can be rotated by applying an electric field. While this implies spin-driven ferroelectricity, no direct evidence of electric polarization has been reported to date. Here we report the induction and control of polarization in the borate in the presence of an external magnetic field. Applying a magnetic field along the [110] or [11̄0] axis induces electric polarization along the [001] axis. The polarization is reversed by switching the magnetic-field direction between the [110] and [11̄0] axes. The mechanism by which electric polarization emerges can be well explained in the framework of spin-dependent metal-ligand hybridization.

Original languageEnglish
Article number184416
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume87
Issue number18
DOIs
Publication statusPublished - 2013 May 16

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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