Temperature- and Magnetic-Field-Induced Change of Electric Polarization in a Multiferroic Mn0.93Co0.07W0.93O4-delta Single Crystal

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	Temperature- and Magnetic-Field-Induced Change of Electric Polarization in a Multiferroic Mn0.93Co0.07W0.93O4-delta Single Crystal
	Yan, LQ ; Lee, B ; Chun, SH ; Kim, I ; Chung, JH ; Kim, SB ; Park, JY ; Lee, SH ; Chai, Y ; Kim, KH
刊名	JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
	2013
卷号	82 期号:9
关键词	multiferroicity spiral magnetism ferroelectricity MnWO4
ISSN号	0031-9015
通讯作者	Yan, LQ (reprint author), Seoul Natl Univ, Dept Phys & Astron, Seoul 151747, South Korea.
中文摘要	We have investigated magnetic and electrical properties in a multiferroic Mn0.93Co0.07W0.93O4 (delta) single crystal grown using the flux method, in which spiral spin orderings are known to be stabilized and thus magnetically induced electric polarization develops consistent with the spin current model. Upon temperature being lowered, two successive magnetic transitions appeared at T-N1 = 13.0 and T-N2 = 12.2 K. While there was no development of ferroelectric polarization P below T-N1, a dominant P along the a-axis (P-a) and a small P along the b-axis (P-b) clearly developed below T-N2, suggesting the stabilization of a spiral order with its basal plane close to the ac-plane. The magnetization measurements also support the existence of the spiral order with ac-basal plane below T-N2 by exhibiting the largest spin susceptibility along the b-axis and the smaller ones along the a- and c-axes. Upon further lowering temperature below T* = 10.1 K, P-a starts to decrease significantly accompanied by a small increase of P-b while the magnetic susceptibility along the c-axis gradually becomes the largest and concomitantly shows a saturation. We have also found that the magnitude of P-a or P-b can be controlled smoothly at low temperatures as a function of magnetic field less than 9 T. These findings show that the magnitude and direction of the electric polarization vector in Mn0.93Co0.07W0.93O4-delta can be varied as a function of temperature and magnetic field via the changes in the properties of the associated spiral phases.
资助信息	National Creative Research Initiative [2010-0018300]; Fundamental R&D Program for Core Technology of Materials; National Natural Science Foundation of China (NSFC) [11104337]; National Nuclear R&D Program through NRF; MEST of Korea [2011-0031933]; New & Renewable Energy Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning [2011T100100318]; Ministry of Knowledge Economy
语种	英语
公开日期	2014-01-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57549]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Yan, LQ,Lee, B,Chun, SH,et al. Temperature- and Magnetic-Field-Induced Change of Electric Polarization in a Multiferroic Mn0.93Co0.07W0.93O4-delta Single Crystal[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN,2013,82(9).
APA	Yan, LQ.,Lee, B.,Chun, SH.,Kim, I.,Chung, JH.,...&Kim, KH.(2013).Temperature- and Magnetic-Field-Induced Change of Electric Polarization in a Multiferroic Mn0.93Co0.07W0.93O4-delta Single Crystal.JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN,82(9).
MLA	Yan, LQ,et al."Temperature- and Magnetic-Field-Induced Change of Electric Polarization in a Multiferroic Mn0.93Co0.07W0.93O4-delta Single Crystal".JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 82.9(2013).