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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/14006

Title: Anomalous effects of repeated martensitic transitions on the transport, magnetic and thermal properties in Ni-Co-Mn-Sb Heusler alloy
Authors: NAYAK, AK
SURESH, KG
NIGAM, AK
Keywords: SHAPE-MEMORY ALLOYS
PHASE-TRANSITION
HYDROSTATIC-PRESSURE
FIELD
TRANSFORMATION
GD-5(SI2GE2)
TEMPERATURE
NI2MNGA
ORDER
FE
Issue Date: 2011
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Citation: ACTA MATERIALIA,59(8)3304-3312
Abstract: The detrimental effects of repeated thermal/field cycling across the martensitic transition on the transport, magnetic and thermal properties of Ni(45)Co(5)Mn(38)Sb(12) are studied. With the help of resistivity and magnetization measurements, it is shown that the resistivity increases and the magnetization decreases monotonically with continuous temperature or field cycling across the martensitic transition. It is also found that the martensite to austenite transition temperature increases with repeated structural change. The changes occurring in these physical properties are seen to be irreversible in nature. The possible changes in the lattice and the microstructure by repeated structural change seem to be responsible for the observed variations. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.actamat.2011.02.004
http://dspace.library.iitb.ac.in/jspui/handle/100/14006
ISSN: 1359-6454
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