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

Journal Article · Wed May 01 00:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.53.12166· OSTI ID:283896

Liu, X; Steiner, M M; Sooryakumar, R ^[1]; Prinz, G A ^[2]; Farrow, R F; Harp, G ^[3]

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1. Department of Physics, The Ohio State University, Columbus, Ohio 43210 (United States)
2. Naval Research Laboratory, Washington, DC, 20375 (United States)
3. IBM Almaden Research Center, San Jose, California 95120 (United States)

We utilize Brillouin light scattering to investigate the magnetic properties of the hexagonal-close-packed as well as the body- and face-centered cubic phases of elemental cobalt stabilized as thin epilayers. Expressions for the dependence of the surface and bulk magnons on applied magnetic field and in-plane propagation direction yield the exchange stiffness constant {ital D}, saturation magnetization {ital M}, and magnetic anisotropy fields of the cobalt atoms synthesized in these distinct crystal structures. Estimates of {ital D} and {ital M} are also calculated from the electronic band structure for the different crystalline phases. Satisfactory agreement is found between theory and experiment. The implications of these results towards our understanding of magnetic properties of itinerant ferromagnets are discussed. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 283896
• Journal Information: Physical Review, B: Condensed Matter, Vol. 53, Issue 18; Other Information: PBD: May 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT
SPIN WAVES
MAGNETIZATION
ELASTICITY
CUBIC LATTICES
HEXAGONAL LATTICES
LIGHT SCATTERING
BRILLOUIN EFFECT
CRYSTAL STRUCTURE
MECHANICAL PROPERTIES
ELECTRONIC STRUCTURE
FERROMAGNETIC MATERIALS
BAND STRUCTURE