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Title: From spin induced ferroelectricity to dipolar glasses: Spinel chromites and mixed delafossites

Abstract

Magnetoelectric multiferroics showing coupling between polarization and magnetic order are attracting much attention. For instance, they could be used in memory devices. Metal-transition oxides are provided several examples of inorganic magnetoelectric multiferroics. In the present short review, spinel and delafossite chromites are described. For the former, an electric polarization is evidenced in the ferrimagnetic state for ACr{sub 2}O{sub 4} polycrystalline samples (A=Ni, Fe, Co). The presence of a Jahn-Teller cation such as Ni{sup 2+} at the A site is shown to yield larger polarization values. In the delafossites, substitution by V{sup 3+} at the Cr or Fe site in CuCrO{sub 2} (CuFeO{sub 2}) suppresses the complex antiferromagnetic structure at the benefit of a spin glass state. The presence of cation disorder, probed by transmission electron microscopy, favors relaxor-like ferroelectricity. The results on the ferroelectricity of ferrimagnets and insulating spin glasses demonstrate that, in this research field, transition-metal oxides are worth to be studied. - Graphical abstract: Electric polarization as a function of temperature is measured up to T{sub C} in three chromite ferrimagnetic spinels. Largest values are reached for spinels with Jahn-Teller cations at the A site (Ni or Fe). Highlights: Black-Right-Pointing-Pointer Electric polarization is evidenced in the ferrimagnetic statemore » of the chromite spinels. Black-Right-Pointing-Pointer Jahn-Teller cations at the A site of these spinels lead to larger polarization values. Black-Right-Pointing-Pointer Vanadium substituted at the Cr (or Fe) site of delafossites changes the antiferromagnetic state to spin glass. Black-Right-Pointing-Pointer Electric polarization is not the result of magnetic ordering but magnetic disordering in Cr or Fe delafossites. Black-Right-Pointing-Pointer Relaxor-type ferroelectricity or spin induced ferroelectricity can be observed in the delafossites.« less

Authors:
 [1]; ; ; ;  [1];  [2];  [3]
  1. Laboratoire CRISMAT, UMR 6508 CNRS/ENSICAEN, 6 bd du Marechal Juin, F-14050 CAEN Cedex 4 (France)
  2. EMAT, University of Antwerp, B-2020 Antwerp (Belgium)
  3. (Canada)
Publication Date:
OSTI Identifier:
22149883
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 195; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ANTIFERROMAGNETISM; CATIONS; CHROMITES; ELECTRICAL PROPERTIES; GLASS; JAHN-TELLER EFFECT; MAGNETIC PROPERTIES; MEMORY DEVICES; NICKEL IONS; OXIDES; POLARIZATION; POLYCRYSTALS; SPIN GLASS STATE; SPINELS; TEMPERATURE DEPENDENCE; TRANSMISSION ELECTRON MICROSCOPY; VANADIUM; VANADIUM IONS

Citation Formats

Maignan, A., E-mail: antoine.maignan@ensicaen.fr, Martin, C., Singh, K., Simon, Ch., Lebedev, O.I., Turner, S., and Canadian Centre for Electron Microscopy, McMaster University, Hamilton, ON L8S4M1. From spin induced ferroelectricity to dipolar glasses: Spinel chromites and mixed delafossites. United States: N. p., 2012. Web. doi:10.1016/J.JSSC.2012.01.063.
Maignan, A., E-mail: antoine.maignan@ensicaen.fr, Martin, C., Singh, K., Simon, Ch., Lebedev, O.I., Turner, S., & Canadian Centre for Electron Microscopy, McMaster University, Hamilton, ON L8S4M1. From spin induced ferroelectricity to dipolar glasses: Spinel chromites and mixed delafossites. United States. doi:10.1016/J.JSSC.2012.01.063.
Maignan, A., E-mail: antoine.maignan@ensicaen.fr, Martin, C., Singh, K., Simon, Ch., Lebedev, O.I., Turner, S., and Canadian Centre for Electron Microscopy, McMaster University, Hamilton, ON L8S4M1. Thu . "From spin induced ferroelectricity to dipolar glasses: Spinel chromites and mixed delafossites". United States. doi:10.1016/J.JSSC.2012.01.063.
@article{osti_22149883,
title = {From spin induced ferroelectricity to dipolar glasses: Spinel chromites and mixed delafossites},
author = {Maignan, A., E-mail: antoine.maignan@ensicaen.fr and Martin, C. and Singh, K. and Simon, Ch. and Lebedev, O.I. and Turner, S. and Canadian Centre for Electron Microscopy, McMaster University, Hamilton, ON L8S4M1},
abstractNote = {Magnetoelectric multiferroics showing coupling between polarization and magnetic order are attracting much attention. For instance, they could be used in memory devices. Metal-transition oxides are provided several examples of inorganic magnetoelectric multiferroics. In the present short review, spinel and delafossite chromites are described. For the former, an electric polarization is evidenced in the ferrimagnetic state for ACr{sub 2}O{sub 4} polycrystalline samples (A=Ni, Fe, Co). The presence of a Jahn-Teller cation such as Ni{sup 2+} at the A site is shown to yield larger polarization values. In the delafossites, substitution by V{sup 3+} at the Cr or Fe site in CuCrO{sub 2} (CuFeO{sub 2}) suppresses the complex antiferromagnetic structure at the benefit of a spin glass state. The presence of cation disorder, probed by transmission electron microscopy, favors relaxor-like ferroelectricity. The results on the ferroelectricity of ferrimagnets and insulating spin glasses demonstrate that, in this research field, transition-metal oxides are worth to be studied. - Graphical abstract: Electric polarization as a function of temperature is measured up to T{sub C} in three chromite ferrimagnetic spinels. Largest values are reached for spinels with Jahn-Teller cations at the A site (Ni or Fe). Highlights: Black-Right-Pointing-Pointer Electric polarization is evidenced in the ferrimagnetic state of the chromite spinels. Black-Right-Pointing-Pointer Jahn-Teller cations at the A site of these spinels lead to larger polarization values. Black-Right-Pointing-Pointer Vanadium substituted at the Cr (or Fe) site of delafossites changes the antiferromagnetic state to spin glass. Black-Right-Pointing-Pointer Electric polarization is not the result of magnetic ordering but magnetic disordering in Cr or Fe delafossites. Black-Right-Pointing-Pointer Relaxor-type ferroelectricity or spin induced ferroelectricity can be observed in the delafossites.},
doi = {10.1016/J.JSSC.2012.01.063},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 195,
place = {United States},
year = {2012},
month = {11}
}