TITLE

From single- to double-first-order magnetic phase transition in magnetocaloric Mn1-xCrxCoGe compounds

AUTHOR(S)
Trung, N. T.; Biharie, V.; Zhang, L.; Caron, L.; Buschow, K. H. J.; Brück, E.
PUB. DATE
April 2010
SOURCE
Applied Physics Letters;4/19/2010, Vol. 96 Issue 16, p162507
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Substitution of some Cr for Mn atoms in MnCoGe was employed to control the magnetic and structural transitions in this alloy to coincide, leading to a single first-order magnetostructural transition from the ferromagnetic to the paramagnetic state with a giant magnetocaloric effect observed near room temperature. Further increase in the Cr content in the Mn1-xCrxCoGe alloys can induce another first-order magnetoelastic transition from the antiferromagnetic to the ferromagnetic state occurring at lower temperature. The giant magnetocaloric effect as well as the simultaneous tunability of the two magnetic transitions make these materials promising for future cooling applications.
ACCESSION #
49807504

 

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