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Oh, Yoon Seok
Laboratory for Strong Correlation in Quantum Materials
Research Interests
  • Multiferroic
  • Ferroelectric
  • Quantum Magnetism

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Electric polarization enhancement in multiferroic CoCr2O4 crystals with Cr-site mixing

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Title
Electric polarization enhancement in multiferroic CoCr2O4 crystals with Cr-site mixing
Author
Kim, IngyuOh, Yoon SeokLiu, YongChun, Sae HwanLee, Jun-SikKo, Kyung-TaePark, Jae-HoonChung, Jae-HoKim, Kee Hoon
Issue Date
2009-01
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.94, no.4, pp.042505
Abstract
Single crystals of multiferroic cobalt chromite Co (Cr2-x Cox) O4 have been grown via several methods to have different Co3+ doping levels (x=0.0, 0.14, and 0.18). Under magnetic fields, all the crystals display electric polarization reversal below their spiral spin ordering temperatures. We find that both saturated electric polarization and magnetization under magnetic fields increase significantly with the increase in x. This result can be qualitatively explained by a broken balance between at least two electric polarization contributions existing in CoCr2 O4 and is expected to be useful in tailoring electric polarization in similar kinds of multiferroics. © 2009 American Institute of Physics.
URI
https://scholarworks.unist.ac.kr/handle/201301/12070
URL
http://scitation.aip.org/content/aip/journal/apl/94/4/10.1063/1.3076102
DOI
10.1063/1.3076102
ISSN
0003-6951
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