Phase-field microelasticity theory and micromagnetic simulations of domain structures in giant magnetostrictive materials

J. X. Zhang, L. Q. Chen

Research output: Contribution to journalArticle

123 Citations (Scopus)

Abstract

A computational model is proposed to predict the stability of magnetic domain structures and their temporal evolution in giant magnetostrictive materials by combining a micromagnetic model with the phase-field microelasticity theory of Khachaturyan. The model includes all the important energetic contributions, including the magnetocrystalline anisotropy energy, exchange energy, magnetostatic energy, external field energy, and elastic energy. While the elastic energy of an arbitrary magnetic domain structure is obtained analytically in Fourier space, the Landau-Liftshitz-Gilbert equation is solved using the efficient Gauss-Seidel projection method. Both Fe 81.3Ga18.7 and Terfenol-D are considered as examples. The effects of elastic energy and magnetostatic energy on domain structures are studied. The magnetostriction and associated domain structure evolution under an applied field are modeled under different pre-stress conditions. It is shown that a compressive pre-stress can efficiently increase the overall magnetostrictive effect. The results are compared with existing experiment measurements and observations.

Original languageEnglish (US)
Pages (from-to)2845-2855
Number of pages11
JournalActa Materialia
Volume53
Issue number9
DOIs
StatePublished - May 1 2005

Fingerprint

Magnetic domains
Magnetostatics
Magnetocrystalline anisotropy
Magnetostriction
Experiments

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Cite this

@article{c3cc49f698594bbb91ccd59e81329517,
title = "Phase-field microelasticity theory and micromagnetic simulations of domain structures in giant magnetostrictive materials",
abstract = "A computational model is proposed to predict the stability of magnetic domain structures and their temporal evolution in giant magnetostrictive materials by combining a micromagnetic model with the phase-field microelasticity theory of Khachaturyan. The model includes all the important energetic contributions, including the magnetocrystalline anisotropy energy, exchange energy, magnetostatic energy, external field energy, and elastic energy. While the elastic energy of an arbitrary magnetic domain structure is obtained analytically in Fourier space, the Landau-Liftshitz-Gilbert equation is solved using the efficient Gauss-Seidel projection method. Both Fe 81.3Ga18.7 and Terfenol-D are considered as examples. The effects of elastic energy and magnetostatic energy on domain structures are studied. The magnetostriction and associated domain structure evolution under an applied field are modeled under different pre-stress conditions. It is shown that a compressive pre-stress can efficiently increase the overall magnetostrictive effect. The results are compared with existing experiment measurements and observations.",
author = "Zhang, {J. X.} and Chen, {L. Q.}",
year = "2005",
month = "5",
day = "1",
doi = "10.1016/j.actamat.2005.03.002",
language = "English (US)",
volume = "53",
pages = "2845--2855",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "Elsevier Limited",
number = "9",

}

Phase-field microelasticity theory and micromagnetic simulations of domain structures in giant magnetostrictive materials. / Zhang, J. X.; Chen, L. Q.

In: Acta Materialia, Vol. 53, No. 9, 01.05.2005, p. 2845-2855.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Phase-field microelasticity theory and micromagnetic simulations of domain structures in giant magnetostrictive materials

AU - Zhang, J. X.

AU - Chen, L. Q.

PY - 2005/5/1

Y1 - 2005/5/1

N2 - A computational model is proposed to predict the stability of magnetic domain structures and their temporal evolution in giant magnetostrictive materials by combining a micromagnetic model with the phase-field microelasticity theory of Khachaturyan. The model includes all the important energetic contributions, including the magnetocrystalline anisotropy energy, exchange energy, magnetostatic energy, external field energy, and elastic energy. While the elastic energy of an arbitrary magnetic domain structure is obtained analytically in Fourier space, the Landau-Liftshitz-Gilbert equation is solved using the efficient Gauss-Seidel projection method. Both Fe 81.3Ga18.7 and Terfenol-D are considered as examples. The effects of elastic energy and magnetostatic energy on domain structures are studied. The magnetostriction and associated domain structure evolution under an applied field are modeled under different pre-stress conditions. It is shown that a compressive pre-stress can efficiently increase the overall magnetostrictive effect. The results are compared with existing experiment measurements and observations.

AB - A computational model is proposed to predict the stability of magnetic domain structures and their temporal evolution in giant magnetostrictive materials by combining a micromagnetic model with the phase-field microelasticity theory of Khachaturyan. The model includes all the important energetic contributions, including the magnetocrystalline anisotropy energy, exchange energy, magnetostatic energy, external field energy, and elastic energy. While the elastic energy of an arbitrary magnetic domain structure is obtained analytically in Fourier space, the Landau-Liftshitz-Gilbert equation is solved using the efficient Gauss-Seidel projection method. Both Fe 81.3Ga18.7 and Terfenol-D are considered as examples. The effects of elastic energy and magnetostatic energy on domain structures are studied. The magnetostriction and associated domain structure evolution under an applied field are modeled under different pre-stress conditions. It is shown that a compressive pre-stress can efficiently increase the overall magnetostrictive effect. The results are compared with existing experiment measurements and observations.

UR - http://www.scopus.com/inward/record.url?scp=17644369620&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17644369620&partnerID=8YFLogxK

U2 - 10.1016/j.actamat.2005.03.002

DO - 10.1016/j.actamat.2005.03.002

M3 - Article

AN - SCOPUS:17644369620

VL - 53

SP - 2845

EP - 2855

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

IS - 9

ER -