Reference : Magnetic ordering of the martensite phase in Ni-Co-Mn-Sn-based ferromagnetic shape me...

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	Focus Areas :	Physics and Materials Science
	To cite this reference:	http://hdl.handle.net/10993/41522

Title :	Magnetic ordering of the martensite phase in Ni-Co-Mn-Sn-based ferromagnetic shape memory alloys
Language :	English
Author, co-author :	Sarkar, Sudip Kumar [> >]
	Ahlawat, Sarita [> >]
	Kaushik, S. D. [> >]
	Babu, P. D. [> >]
	Sen, Debasis [> >]
	Honecker, Dirk [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit]
	Biswas, Aniruddha [> >]
Publication date :	1-Aug-2019
Journal title :	Journal of Physics: Condensed Matter
Publisher :	Institute of Physics Publishing
Peer reviewed :	Yes (verified by ORBilu)
Audience :	International
ISSN :	0953-8984
e-ISSN :	1361-648X
City :	Bristol
Country :	United Kingdom
Keywords :	[en] Condensed Matter - Materials Science
Abstract :	[en] The magnetic state of low temperature martensite phase in Co-substituted Ni-Mn-Sn-based ferromagnetic shape memory alloys (FSMAs) has been investigated, in view of numerous conflicting reports of occurrences of spin glass (SG), superparamagnetism (SPM) or long range anti- ferromagnetic (AF) ordering. Combination of dc magnetization, ac susceptibility and small angle neutron scattering (SANS) studies provide a clear evidence for AF order in martensitic phase of Ni45Co5Mn38Sn12 alloy and rule out SPM and SG orders. Identical studies on another alloy of close composition of Ni44Co6Mn40Sn10 point to presence of SG order in martensitic phase and absence of SPM behavior, contrary to earlier report. SANS results do show presence of nanometre-sized clusters but they are found to grow in size from 3 nm at 30 K to 11 nm at 300 K, and do not correlate with magnetism in these alloys. <P />
Permalink :	http://hdl.handle.net/10993/41522
DOI :	10.1088/1361-648X/ab5876
Other URL :	https://doi.org/10.1088/1361-648X/ab5876

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	Fulltext file(s): File Commentary Version Size Access Open access Sarkar_2019_J._Phys.__Condens._Matter_magneticOrdering_inNiCOMnSNShapeMemoryAlloy.pdf Publisher postprint 934.07 kB View/Open

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