ac field-induced actuation of single crystal Ni-Mn-Ga

被引：87

作者：

Henry, CP ^{[1
]}

Bono, D ^{[1
]}

Feuchtwanger, J ^{[1
]}

Allen, SM ^{[1
]}

O'Handley, RC ^{[1
]}

机构：

[1] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2002年 / 91卷 / 10期

关键词：

D O I：

10.1063/1.1449441

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single crystals of Ni-Mn-Ga have shown 6% field induced strain in quasistatic actuation against an applied load. Here we report the ac actuation response and a magnetostrictivity constant of an off-stoichiometry single crystal of Ni-Mn-Ga measuring approximately 14x5.6x1 mm. This sample shows a maximum 3% strain under a bias stress of 1.1-1.5 MPa. The deficit between the low-frequency ac field-induced strain and the 6% dc results are discussed. Additionally, the epsilon-H indicate a peak differential value for d(13) of 1%/kOe (13x10(-8) m/A) which is about two times that of Terfenol-D. (C) 2002 American Institute of Physics.

引用

页码：7810 / 7811

页数：2