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오윤석

Oh, Yoon Seok
Laboratory for Strong Correlation in Quantum Materials
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Physical properties of multiferroic hexagonal HoMnO3 thin films

Author(s)
Murugavel, PLee, JHLee, DNoh, TWJo, YJung, M-HOh, Yoon SeokKim, KH
Issued Date
2007-04
DOI
10.1063/1.2718512
URI
https://scholarworks.unist.ac.kr/handle/201301/12394
Fulltext
http://scitation.aip.org/content/aip/journal/apl/90/14/10.1063/1.2718512
Citation
APPLIED PHYSICS LETTERS, v.90, no.14, pp.142902
Abstract
The authors investigated the magnetic and ferroelectric properties of hexagonally grown HoMn O3 thin films. The magnetic measurements revealed bulklike magnetic phase transitions with an additional spin-glass-like behavior feature below the Náel temperature. The ferroelectricity in the films was distinctly different from the suggested bulk behavior. Below 40 K, the HoMn O3 films showed typical ferroelectric character: their remnant polarization and coercive field values at 20 K were 3.7 μC cm2 and 0.69 MVcm. Above 40 K, however, the films exhibited an unusual antiferroelectriclike behavior, with more pronounced features appearing at higher temperatures. These intriguing physical properties make HoMn O3 films a potential candidate material for numerous future applications. © 2007 American Institute of Physics.
Publisher
AMER INST PHYSICS
ISSN
0003-6951

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