EXAFS Study for a Magnetic Shape Memory Alloy Ni-Mn-Ga

EXAFS Study for a Magnetic Shape Memory Alloy Ni-Mn-Ga

The local structure related to the magnetic property during the martensite-autenite transition of a Ni2MnGa alloy has been studied by using a Ga K-edge (EXAFS) analysis for temperatures from 150 K to 300 K. From the analysis, we found that the local structure was slightly distorted in the pre-marten...

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Veröffentlicht in:Journal of the Korean Physical Society 2007, 50(4), , pp.1062-1067
Hauptverfasser: Yang, Dong-Seok, Kim, Ikgyun, Yoo, Yong-Goo, Jiang, Bingzhi, Min, Seung-Gi, Yu, Seong-Cho
Format: Artikel
Sprache:eng
Schlagworte:
물리학
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Zusammenfassung:The local structure related to the magnetic property during the martensite-autenite transition of a Ni2MnGa alloy has been studied by using a Ga K-edge (EXAFS) analysis for temperatures from 150 K to 300 K. From the analysis, we found that the local structure was slightly distorted in the pre-martensite phase (PM) and that the third moment, ¾(3) increased signi.cantly during the transition period. The anharmonic Ga-Ni pair vibration is discussed in connection with the local structural distortion. KCI Citation Count: 5
ISSN:0374-4884
1976-8524
DOI:10.3938/jkps.50.1062