First principles determinations of magnetostriction in transition metals (invited)

Ruqian Wu; A. J. Freeman

First principles determinations of magnetostriction in transition metals (invited)

Ruqian Wu^*, A. J. Freeman

^*Corresponding author for this work

Physics and Astronomy

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

26 Scopus citations

Abstract

The mechanism of magnetostriction in transition metal bulk (fcc Co) and thin films [Co/Pd(001) and Co/Cu(001)] is investigated using the ab initio full potential linearized augmented plane wave method. With the aid of the state tracking and torque approaches the magnetocrystalline anisotropy energy, the essential ingredient of the magnetostriction, is found to be a linear function of the interlayer distances. The calculated magnetostrictive coefficients and magnetoelastic coupling constants for bulk fee Co agree very well with experiment. The calculated λ₀₀₁ at the Co/Pd(001) interface is much larger in magnitude (+2.3×10^-4) and differs in sign compared to that for Co/Cu(001)(-5.7×10^-5). In these thin films, the hybridization between the Co- d_xz,yz and the underlying substrate d states is found to play the key role.

Original language	English (US)
Pages (from-to)	6209-6212
Number of pages	4
Journal	Journal of Applied Physics
Volume	79
Issue number	8 PART 2B
State	Published - Apr 15 1996

ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

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title = "First principles determinations of magnetostriction in transition metals (invited)",

abstract = "The mechanism of magnetostriction in transition metal bulk (fcc Co) and thin films [Co/Pd(001) and Co/Cu(001)] is investigated using the ab initio full potential linearized augmented plane wave method. With the aid of the state tracking and torque approaches the magnetocrystalline anisotropy energy, the essential ingredient of the magnetostriction, is found to be a linear function of the interlayer distances. The calculated magnetostrictive coefficients and magnetoelastic coupling constants for bulk fee Co agree very well with experiment. The calculated λ001 at the Co/Pd(001) interface is much larger in magnitude (+2.3×10-4) and differs in sign compared to that for Co/Cu(001)(-5.7×10-5). In these thin films, the hybridization between the Co- dxz,yz and the underlying substrate d states is found to play the key role.",

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N2 - The mechanism of magnetostriction in transition metal bulk (fcc Co) and thin films [Co/Pd(001) and Co/Cu(001)] is investigated using the ab initio full potential linearized augmented plane wave method. With the aid of the state tracking and torque approaches the magnetocrystalline anisotropy energy, the essential ingredient of the magnetostriction, is found to be a linear function of the interlayer distances. The calculated magnetostrictive coefficients and magnetoelastic coupling constants for bulk fee Co agree very well with experiment. The calculated λ001 at the Co/Pd(001) interface is much larger in magnitude (+2.3×10-4) and differs in sign compared to that for Co/Cu(001)(-5.7×10-5). In these thin films, the hybridization between the Co- dxz,yz and the underlying substrate d states is found to play the key role.

AB - The mechanism of magnetostriction in transition metal bulk (fcc Co) and thin films [Co/Pd(001) and Co/Cu(001)] is investigated using the ab initio full potential linearized augmented plane wave method. With the aid of the state tracking and torque approaches the magnetocrystalline anisotropy energy, the essential ingredient of the magnetostriction, is found to be a linear function of the interlayer distances. The calculated magnetostrictive coefficients and magnetoelastic coupling constants for bulk fee Co agree very well with experiment. The calculated λ001 at the Co/Pd(001) interface is much larger in magnitude (+2.3×10-4) and differs in sign compared to that for Co/Cu(001)(-5.7×10-5). In these thin films, the hybridization between the Co- dxz,yz and the underlying substrate d states is found to play the key role.

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First principles determinations of magnetostriction in transition metals (invited)

Abstract

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