Multiferroic and Magnetoelectric Oxides: The Emerging Scenario.

J Phys Chem Lett

Chemistry and Physics of Materials Unit, International Centre for Materials Science and CSIR Unit of Excellence in Chemistry, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560064, India.

Published: August 2012

AI Article Synopsis

  • Multiferroics are materials that can exhibit both magnetism and ferroelectricity, traditionally considered rare due to their differing requirements.
  • Recent discoveries have identified several multiferroic oxides, mainly driven by the unique interactions between ferroelectricity and magnetism.
  • The paper discusses different types of these materials, including manganites and ferrites, and highlights BiMnO3 as a notable example of a ferromagnetic and ferroelectric material, suggesting a promising future for the discovery of more multiferroic compounds.

Article Abstract

Multiferroics were considered to be rare because magnetism and ferroelectricity require entirely different criteria for the materials. Several multiferroic oxides have, however, been discovered in the past few years by virtue of novel operating mechanisms, the most effective one being ferroelectricity driven by magnetism itself. Many such oxides where the magnetic and electric order parameters interact also exhibit magnetoelectric or magnetodielectric properties. In this Perspective, properties of manganites, ferrites, and other monophasic multiferroic oxides with spin-induced electric polarization are described. Multiferroic properties arising from charge ordering are examined. The present status of BiMnO3, which is an unusual example of a ferromagnetic-ferroelectric, is presented. Recent findings suggest that it is likely that many more multiferroic and magnetoelectric oxide materials exhibiting magnetically induced ferroelectricity will be found in the future.

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http://dx.doi.org/10.1021/jz300688bDOI Listing

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