Shape memory behavior of Ni-Mn-Ga sputtered films under a magnetic field

被引：19
作者：
Ohtsuka, M [1 ]
Sanada, M
Matsumoto, M
Takagi, T
Itagaki, K
机构：
[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan
[2] Tohoku Univ, Inst Fluid Sci, Sendai, Miyagi 9808577, Japan
来源：
MATERIALS TRANSACTIONS | 2003年 / 44卷 / 12期
关键词：
nickel-manganese-gallium; ferromagnetic shape memory alloy; sputter deposition; constraint-aging; shape memory effect; magnetic field;
D O I：
10.2320/matertrans.44.2513
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The shape memory behavior under the magnetic field up to 5 T was observed in Ni-Mn-Ga sputtered films. The sputtered films were heat-treated at 1073 K for 36 ks for homogenization and aged at 673 K for 14.4 and 56.7 ks in a constraint condition. The martensitic transformation temperatures and Curie temperature of the obtained films were higher than room temperature. The martensitic transformation temperatures increased under a magnetic field. Furthermore, a shape memory effect was observed by increasing and decreasing of the magnetic field.
引用
收藏
页码：2513 / 2519
页数：7
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