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Title: From spin induced ferroelectricity to spin and dipolar glass in a triangular lattice: The CuCr{sub 1−x}V{sub x}O{sub 2} (0≤x≤0.5) delafossite

Abstract

The change from antiferromagnetism induced ferroelectricity to spin glass ferroelectric relaxor has been studied along the CuCr{sub 1−x}V{sub x}O{sub 2} (0≤x≤0.5) solid solution of polycrystalline samples. As x increases from CuCrO{sub 2} (x=0) to CuCr{sub 0.82}V{sub 0.18}O{sub 2}, it is found that the Néel temperature decreases from ∼24 K down to ∼13 K. This progressive weakening of the antiferromagnetism of CuCrO{sub 2} induces a rapid decrease of the spin induced ferroelectricity with polarization values going from ∼44 μC/m{sup 2} down to ∼1.5 μC/m{sup 2} for x=0.04 and x=0.08, respectively. Beyond x=0.18 (0.20≤x≤0.50), ac-magnetic susceptibility and magnetization measurements evidence a spin glass state while dielectric permittivity and polarization measurements point towards a relaxor behaviour. This shows that competing magnetic interactions in delafossites are an efficient way to transform a spin induced magnetoelectric into a multiglass (spin and dipolar) state. - Graphical abstract: The P(T) curves evidencing the aging effect on polarization in CuCr{sub 0.5}V{sub 0.5}O{sub 2}: E=135 kV/m is applied during cooling at different temperatures. The P values and the inflection point of the transition depend on the poling temperature suggesting a relaxor behaviour. This effect related to the spin glass state is not observed for the lowest vanadium content. -more » Highlights: • Samples of the CuCr{sub 1−x}V{sub x}O{sub 2} series have been studied. • The V content increase induces a change from antiferromagnetism to spin glass. • A behavior characterisitic of a spin and dipole glass is demonstrated. • The ferroelectricity is shown to go from spin induced to relaxor. • Competing magnetic interactions are efficient way to generate multiglass state.« less

Authors:
;  [1];  [2]; ;  [1]
  1. Laboratoire CRISMAT, CNRS UMR 6508, ENSICAEN, 6 Boulevard du Marechal Juin, 14050 Caen Cedex (France)
  2. Analysis and Characterization Department, National Institute for R and D in Electrochemistry and Condensed Matter, Timisoara 30024 (Romania)
Publication Date:
OSTI Identifier:
22309013
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 203; Other Information: Copyright (c) 2013 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; COOLING; DIPOLES; FERROELECTRIC MATERIALS; GLASS; INTERACTIONS; MAGNETIC SUSCEPTIBILITY; MAGNETIZATION; PERMITTIVITY; POLARIZATION; POLYCRYSTALS; SOLID SOLUTIONS; SPIN; SPIN GLASS STATE; X-RAY DIFFRACTION

Citation Formats

Kumar, S., Singh, K., Miclau, M., Simon, Ch., Martin, C., and Maignan, A., E-mail: antoine.maignan@ensicaen.fr. From spin induced ferroelectricity to spin and dipolar glass in a triangular lattice: The CuCr{sub 1−x}V{sub x}O{sub 2} (0≤x≤0.5) delafossite. United States: N. p., 2013. Web. doi:10.1016/J.JSSC.2013.04.003.
Kumar, S., Singh, K., Miclau, M., Simon, Ch., Martin, C., & Maignan, A., E-mail: antoine.maignan@ensicaen.fr. From spin induced ferroelectricity to spin and dipolar glass in a triangular lattice: The CuCr{sub 1−x}V{sub x}O{sub 2} (0≤x≤0.5) delafossite. United States. https://doi.org/10.1016/J.JSSC.2013.04.003
Kumar, S., Singh, K., Miclau, M., Simon, Ch., Martin, C., and Maignan, A., E-mail: antoine.maignan@ensicaen.fr. Mon . "From spin induced ferroelectricity to spin and dipolar glass in a triangular lattice: The CuCr{sub 1−x}V{sub x}O{sub 2} (0≤x≤0.5) delafossite". United States. https://doi.org/10.1016/J.JSSC.2013.04.003.
@article{osti_22309013,
title = {From spin induced ferroelectricity to spin and dipolar glass in a triangular lattice: The CuCr{sub 1−x}V{sub x}O{sub 2} (0≤x≤0.5) delafossite},
author = {Kumar, S. and Singh, K. and Miclau, M. and Simon, Ch. and Martin, C. and Maignan, A., E-mail: antoine.maignan@ensicaen.fr},
abstractNote = {The change from antiferromagnetism induced ferroelectricity to spin glass ferroelectric relaxor has been studied along the CuCr{sub 1−x}V{sub x}O{sub 2} (0≤x≤0.5) solid solution of polycrystalline samples. As x increases from CuCrO{sub 2} (x=0) to CuCr{sub 0.82}V{sub 0.18}O{sub 2}, it is found that the Néel temperature decreases from ∼24 K down to ∼13 K. This progressive weakening of the antiferromagnetism of CuCrO{sub 2} induces a rapid decrease of the spin induced ferroelectricity with polarization values going from ∼44 μC/m{sup 2} down to ∼1.5 μC/m{sup 2} for x=0.04 and x=0.08, respectively. Beyond x=0.18 (0.20≤x≤0.50), ac-magnetic susceptibility and magnetization measurements evidence a spin glass state while dielectric permittivity and polarization measurements point towards a relaxor behaviour. This shows that competing magnetic interactions in delafossites are an efficient way to transform a spin induced magnetoelectric into a multiglass (spin and dipolar) state. - Graphical abstract: The P(T) curves evidencing the aging effect on polarization in CuCr{sub 0.5}V{sub 0.5}O{sub 2}: E=135 kV/m is applied during cooling at different temperatures. The P values and the inflection point of the transition depend on the poling temperature suggesting a relaxor behaviour. This effect related to the spin glass state is not observed for the lowest vanadium content. - Highlights: • Samples of the CuCr{sub 1−x}V{sub x}O{sub 2} series have been studied. • The V content increase induces a change from antiferromagnetism to spin glass. • A behavior characterisitic of a spin and dipole glass is demonstrated. • The ferroelectricity is shown to go from spin induced to relaxor. • Competing magnetic interactions are efficient way to generate multiglass state.},
doi = {10.1016/J.JSSC.2013.04.003},
url = {https://www.osti.gov/biblio/22309013}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 203,
place = {United States},
year = {2013},
month = {7}
}