Theory of magnetostriction with applications to TbxDy1−xFe2

R. D. James; D. Kinderlehrer

doi:10.1080/01418639308226405

Theory of magnetostriction with applications to Tb_xDy_1−xFe₂

R. D. James, D. Kinderlehrer

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

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Abstract

We present a new approach to magnetostriction that is formulated to describe materials with large magnetostriction. The main idea of the theory is to derive precisely from lattice considerations the potential wells of the anisotropy energy. The theory exhibits frustration in the sense explored by the authors in the rigid case, with fine domains modelled by minimizing sequences. It is applied to the material Tb_xDy_1−xFe₂ and predicts accurately the domain structures observed by Lord in growth twinned crystals, and suggests a mechanism of magnetostriction involving a switch from a coarse domain structure to a different finer domain structure.

Original language	English (US)
Pages (from-to)	237-274
Number of pages	38
Journal	Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume	68
Issue number	2
DOIs	https://doi.org/10.1080/01418639308226405
State	Published - Aug 1993
Externally published	Yes

Bibliographical note

Funding Information:
The authors thank NSF, AFOSR, ONR, ARO and SERC for supporting this research through NSF/DMS-91 I 1572, AFOSR-91-0301, N/NOO14-91-J-4034,

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abstract = "We present a new approach to magnetostriction that is formulated to describe materials with large magnetostriction. The main idea of the theory is to derive precisely from lattice considerations the potential wells of the anisotropy energy. The theory exhibits frustration in the sense explored by the authors in the rigid case, with fine domains modelled by minimizing sequences. It is applied to the material TbxDy1−xFe2 and predicts accurately the domain structures observed by Lord in growth twinned crystals, and suggests a mechanism of magnetostriction involving a switch from a coarse domain structure to a different finer domain structure.",

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