Asymmetric "melting" and "freezing" kinetics of the magnetostructural phase transition in B2-ordered FeRh epilayers

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	Asymmetric "melting" and "freezing" kinetics of the magnetostructural phase transition in B2-ordered FeRh epilayers
	de Vries, MA ; Loving, M ; McLaren, M ; Brydson, RMD ; Liu, X ; Langridge, S ; Lewis, LH ; Marrows, CH
刊名	APPLIED PHYSICS LETTERS
	2014
卷号	104 期号:23
ISSN号	0003-6951
通讯作者	de Vries, MA (reprint author), Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England.
中文摘要	Synchrotron X-ray diffraction was used to study the phase transformation processes during the magnetostructural transition in a B2-ordered FeRh (001)-oriented epilayer grown on MgO by sputtering. Out-of-plane lattice constant measurements within the hysteretic regime of the transition reveal a microstructure consistent with the coexistence of lattice-expanded and contracted phases in spatially distinct regions. It was found that the phase separation is more pronounced during cooling than heating. Furthermore, whilst lattice-expanded domains that span the height of the film can be undercooled by several kelvins, there is no equivalent superheating. This asymmetry between the cooling and heating processes in FeRh is consistent with the difference in the kinetics of generic freezing and melting transitions. (C) 2014 AIP Publishing LLC.
资助信息	National Science Foundation [DMR-0908767]; UK Engineering and Physical Sciences Research Council [EP/G065640/1]; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-98CH10886]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/58906]
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	de Vries, MA,Loving, M,McLaren, M,et al. Asymmetric "melting" and "freezing" kinetics of the magnetostructural phase transition in B2-ordered FeRh epilayers[J]. APPLIED PHYSICS LETTERS,2014,104(23).
APA	de Vries, MA.,Loving, M.,McLaren, M.,Brydson, RMD.,Liu, X.,...&Marrows, CH.(2014).Asymmetric "melting" and "freezing" kinetics of the magnetostructural phase transition in B2-ordered FeRh epilayers.APPLIED PHYSICS LETTERS,104(23).
MLA	de Vries, MA,et al."Asymmetric "melting" and "freezing" kinetics of the magnetostructural phase transition in B2-ordered FeRh epilayers".APPLIED PHYSICS LETTERS 104.23(2014).