Mossbauer studies on structural ordering and magnetic properties of melt-spun Ni-Fe-Ga ribbons
DSpace at IIT Bombay
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Title |
Mossbauer studies on structural ordering and magnetic properties of melt-spun Ni-Fe-Ga ribbons
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Creator |
RAMA RAO, NV
GOPALAN, R MANIVEL RAJA, M CHANDRASEKARAN, V SURESH, KG |
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Subject |
shape-memory alloy
martensitic-transformation hyperfine fields ni2mnga system antisite defects curie temperature ferromagnetic materials gallium alloys hyperfine interactions iron alloys magnetic moments magnetisation melt spinning mossbauer effect nickel alloys order-disorder transformations shape memory effects |
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Description |
Ribbons of ferromagnetic shape memory Ni(2+x)Fe(1-x)Ga (x=0 and 0.12) alloys were prepared at wheel speeds of 12 and 35 m/s by melt spinning technique. The structural (site) disorder and the associated changes in the magnetic properties of the ribbons were investigated by (57)Fe Mossbauer spectroscopy and magnetization measurements respectively. Mossbauer spectra of Ni(2)FeGa ribbon revealed the presence of both L2(1) order and B2-like disorder with some amount of Fe antisite atoms on Ni site. The increase in Ni content was found to decrease the T(C) while its effect on T(M) was the opposite way.
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Publisher |
AMER INST PHYSICS
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Date |
2011-07-16T09:34:00Z
2011-12-26T12:49:41Z 2011-12-27T05:35:17Z 2011-07-16T09:34:00Z 2011-12-26T12:49:41Z 2011-12-27T05:35:17Z 2008 |
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Type |
Article
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Identifier |
APPLIED PHYSICS LETTERS, 93(20), -
0003-6951 http://dx.doi.org/10.1063/1.3028342 http://dspace.library.iitb.ac.in/xmlui/handle/10054/4390 http://hdl.handle.net/10054/4390 |
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Language |
en
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