TITLE

Magnetic properties and shape memory of Fe-doped Ni[sub 52]Mn[sub 24]Ga[sub 24] single crystals

AUTHOR(S)
Wu, G. H.; Wang, W. H.; Chen, J. L.; Ao, L.; Liu, Z. H.; Zhan, W. S.; Liang, T.; Xu, H. B.
PUB. DATE
January 2002
SOURCE
Applied Physics Letters;1/28/2002, Vol. 80 Issue 4, p634
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Single crystals of a pseudoquaternary Heusler alloy, Ni[sub 52]Mn[sub 16]Fe[sub 8]Ga[sub 24], have now been synthesized. The substitution of Fe for Mn strengthens the magnetic exchange interactions, increasing the Curie temperature to 381 K. The Fe also increases the Ni magnetic moment to 0.41 μB relative to that in the stoichiometric Heusler composition. The strain accompanying the martensitic transformation is 2.4% in zero field and can be enhanced to 4.2% by a field of 1.2 T. A field-induced strain of 1.15% has been induced along [001] in unstressed crystals with magnetic fields of 1.2 T applied at 291 K. © 2002 American Institute of Physics.
ACCESSION #
5942519

 

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