Large field-induced strains in ferromagnetic shape memory materials

Richard D. James; Robert Tickle; Manfred Wuttig

doi:10.1016/S0921-5093(99)00364-0

Large field-induced strains in ferromagnetic shape memory materials

Richard D. James, Robert Tickle, Manfred Wuttig

Aerospace Engineering and Mechanics

Research output: Contribution to journal › Article › peer-review

147 Scopus citations

Abstract

We study magnetostriction in ferromagnetic shape memory materials caused by a redistribution of twin bands in response to an applied magnetic field. Recent measurements of strain versus magnetic field in Ni-24 at% Mn-24.7 at% Ga are presented. We report strains of about 0.5% under cyclic application of a field, and field-induced strains of about 4% on specimens that have been previously cooled through the martensitic transformation under stress. A comparison between these measurements and theoretical calculations reveals a discrepancy. We hypothesize that this is due to magnetization rotation, accompanied by the formation of fine magnetic domains within each band of martensite.

Original language	English (US)
Pages (from-to)	320-325
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	273-275
DOIs	https://doi.org/10.1016/S0921-5093(99)00364-0
State	Published - Dec 15 1999

Bibliographical note

Funding Information:
This research was supported by ONR-DARPA (for RDJ and RT, N00014-95-1-1145 and -91-J4034 and for MW N00014-95-1-1071 and -93-10506). The work also benefited from support by AFOSR/MURI F49620-98-1-0433, ARO DA/DAAG55-98-10335 and NSF DMS-9505077). We are pleased to acknowledge helpful discussions with Robert V. Kohn.

Keywords

Magnetostriction
Martensite

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title = "Large field-induced strains in ferromagnetic shape memory materials",

abstract = "We study magnetostriction in ferromagnetic shape memory materials caused by a redistribution of twin bands in response to an applied magnetic field. Recent measurements of strain versus magnetic field in Ni-24 at% Mn-24.7 at% Ga are presented. We report strains of about 0.5% under cyclic application of a field, and field-induced strains of about 4% on specimens that have been previously cooled through the martensitic transformation under stress. A comparison between these measurements and theoretical calculations reveals a discrepancy. We hypothesize that this is due to magnetization rotation, accompanied by the formation of fine magnetic domains within each band of martensite.",

keywords = "Magnetostriction, Martensite",

author = "James, {Richard D.} and Robert Tickle and Manfred Wuttig",

note = "Funding Information: This research was supported by ONR-DARPA (for RDJ and RT, N00014-95-1-1145 and -91-J4034 and for MW N00014-95-1-1071 and -93-10506). The work also benefited from support by AFOSR/MURI F49620-98-1-0433, ARO DA/DAAG55-98-10335 and NSF DMS-9505077). We are pleased to acknowledge helpful discussions with Robert V. Kohn. ",

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T1 - Large field-induced strains in ferromagnetic shape memory materials

AU - James, Richard D.

AU - Tickle, Robert

AU - Wuttig, Manfred

N1 - Funding Information: This research was supported by ONR-DARPA (for RDJ and RT, N00014-95-1-1145 and -91-J4034 and for MW N00014-95-1-1071 and -93-10506). The work also benefited from support by AFOSR/MURI F49620-98-1-0433, ARO DA/DAAG55-98-10335 and NSF DMS-9505077). We are pleased to acknowledge helpful discussions with Robert V. Kohn.

PY - 1999/12/15

Y1 - 1999/12/15

N2 - We study magnetostriction in ferromagnetic shape memory materials caused by a redistribution of twin bands in response to an applied magnetic field. Recent measurements of strain versus magnetic field in Ni-24 at% Mn-24.7 at% Ga are presented. We report strains of about 0.5% under cyclic application of a field, and field-induced strains of about 4% on specimens that have been previously cooled through the martensitic transformation under stress. A comparison between these measurements and theoretical calculations reveals a discrepancy. We hypothesize that this is due to magnetization rotation, accompanied by the formation of fine magnetic domains within each band of martensite.

AB - We study magnetostriction in ferromagnetic shape memory materials caused by a redistribution of twin bands in response to an applied magnetic field. Recent measurements of strain versus magnetic field in Ni-24 at% Mn-24.7 at% Ga are presented. We report strains of about 0.5% under cyclic application of a field, and field-induced strains of about 4% on specimens that have been previously cooled through the martensitic transformation under stress. A comparison between these measurements and theoretical calculations reveals a discrepancy. We hypothesize that this is due to magnetization rotation, accompanied by the formation of fine magnetic domains within each band of martensite.

KW - Magnetostriction

KW - Martensite

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DO - 10.1016/S0921-5093(99)00364-0

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SN - 0921-5093

VL - 273-275

SP - 320

EP - 325

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Large field-induced strains in ferromagnetic shape memory materials

Abstract

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Keywords

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