Correlation between local structure distortions and martensitic transformation in Ni-Mn-In alloys

被引：33

作者：

Lobo, D. N. ^{[1
]}

Priolkar, K. R. ^{[1
]}

Bhobe, P. A. ^{[2
,3
]}

Krishnamurthy, D. ^{[4
]}

Emura, S. ^{[4
]}

机构：

[1] Goa Univ, Dept Phys, Taleigao Plateau 403206, Goa, India

[2] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

[3] RIKEN SPring 8 Ctr, Sayo, Hyogo 6795148, Japan

[4] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 23期

关键词：

INDUCED SHAPE RECOVERY; IFEFFIT;

D O I：

10.1063/1.3454277

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The local structural distortions arising as a consequence of increasing Mn content in Ni(2)Mn(1+x)In(1-x) (x=0, 0.3, 0.4, 0.5, and 0.6) and its effect on martensitic transformation have been studied using extended x-ray absorption fine structure (EXAFS) spectroscopy. Using the room temperature EXAFS at the Ni and Mn K-edges in the above compositions, the changes associated with respect to the local structure of these absorbing atoms are compared. It is seen that in the alloys exhibiting martensitic transformation (x >= 0.4) there is a significant difference between the Ni-In and Ni-Mn bond lengths even in the austenitic phase indicating atomic volume to be the main factor in inducing martensitic transformation in Ni-Mn-In Heusler alloys. (C) 2010 American Institute of Physics. [doi:10.1063/1.3454277]

引用

页数：3

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