Volume 94, Number 3, May 2011
|Number of page(s)||6|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||27 April 2011|
Role of Ni-Mn hybridization in the magnetism of the martensitic state of Ni-Mn-In shape memory alloys
Department of Physics, Goa University - Taleigao Plateau, Goa 403 206, India
2 Institute for Solid State Physics, The University of Tokyo - Kashiwa, Chiba 277-8581, Japan
3 Institute of Scientific and Industrial Research, Osaka University - 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
4 Tata Institute of Fundamental Research - Homi Bhabha Road, Colaba, Mumbai 400 005, India
Accepted: 28 March 2011
Extended X-ray Absorption Fine Structure (EXAFS) studies on Ni50Mn25+xIn25−x have been carried out at the Ni and Mn K-edge as a function of temperature. Thermal evolution of nearest-neighbor Ni-Mn and Mn-Mn bond distances in the martensitic phase gives a clear evidence of a close relation between structural and magnetic degrees of freedom in these alloys. In particular, the study highlights the role of Ni 3d-Mn 3d hybridization in the magnetism of the martensitic phase of these alloys.
PACS: 81.30.Kf – Martensitic transformations / 61.05.cj – X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc. / 75.50.Cc – Other ferromagnetic metals and alloys
© EPLA, 2011
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