ENHANCED DIFFERENTIAL MAGNETOSTRICTIVE RESPONSE IN ANNEALED TERFENOL-D

被引:11
作者
GALLOWAY, N [1 ]
SCHULZE, MP [1 ]
GREENOUGH, RD [1 ]
JILES, DC [1 ]
机构
[1] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011
关键词
D O I
10.1063/1.110776
中图分类号
O59 [应用物理学];
学科分类号
摘要
The field and pressure dependencies of the magnetostriction Of Tb0.316Dy0.684Fe1.982 have been measured in a grain-oriented rod after thermally annealing for 1 day at 850-degrees-C and for 4 days at 950-degrees-C in an argon atmosphere. The results of the heat treatment are a fivefold increase in the strain coefficient d33(=dlambda/dH) and a 100% increase in the maximum strain (lambda). There was also an increase in the lambda-vs-H hysteresis. Under compressive uniaxial stress there was virtually no bulk change in magnetostrictive strain until the field exceeded a critical value which depended on the applied stress, for instance approximately 12 kA/m under a stress of 6 MPa.
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页码:842 / 844
页数:3
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