MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Shape Memory Behavior of Ni-Mn-Ga Sputtered Films under a Magnetic Field
Makoto OhtsukaMasaki SanadaMinoru MatsumotoToshiyuki TakagiKimio Itagaki
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2003 Volume 44 Issue 12 Pages 2513-2519

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Abstract

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.

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© 2003 The Japan Institute of Metals and Materials
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