What question did this study set out to answer?

Determine how hexagonal-close-packed, body-centered cubic, and face-centered cubic crystal structures influence exchange stiffness, saturation magnetization, and magnetic anisotropy in cobalt epilayers.

May 1, 1996Physical review. B, Condensed matter

Exchange stiffness, magnetization, and spin waves in cubic and hexagonal phases of cobalt

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Authors

XLXiangyun LiuHebei University of Technology MSM. SteinerNational Superconducting Cyclotron Laboratory RSR. SooryakumarThe Ohio State University

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Implication

Spectroscopic analysis demonstrates crystal-structure dependence of spin dynamics in cobalt epilayers, highlighting mechanisms governing itinerant ferromagnetism.

Key Points

Determine how hexagonal-close-packed, body-centered cubic, and face-centered cubic crystal structures influence exchange stiffness, saturation magnetization, and magnetic anisotropy in cobalt epilayers.
Synthesized elemental cobalt stabilized as thin epilayers in hexagonal-close-packed (hcp), body-centered cubic (bcc), and face-centered cubic (fcc) crystalline phases.
Measured surface and bulk magnon behaviors across varying applied magnetic fields and in-plane propagation directions using Brillouin light scattering.
Calculated exchange stiffness constants and saturation magnetization from theoretical electronic band structures for each crystalline phase.
Determined empirical exchange stiffness constants, saturation magnetization values, and magnetic anisotropy fields specific to hcp, bcc, and fcc cobalt phases.
Demonstrated satisfactory agreement between the band structure-derived theoretical estimates and the experimentally measured stiffness and magnetization values.

Cite This Study

Liu et al. (1996) studied this question.

synapsesocial.com/papers/6a700c7fe5469ee92be0d36a https://doi.org/10.1103/physrevb.53.12166

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Implication

Spectroscopic analysis demonstrates crystal-structure dependence of spin dynamics in cobalt epilayers, highlighting mechanisms governing itinerant ferromagnetism.

Exchange stiffness, magnetization, and spin waves in cubic and hexagonal phases of cobalt

Discussion

Member takes

Implication

Key Points

Cite This Study

Exchange stiffness, magnetization, and spin waves in cubic and hexagonal phases of cobalt

Discussion

Member takes

Implication

Key Points

Cite This Study

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