High coercivity, epitaxial Sm–Co films with uniaxial in-plane anisotropy

High coercivity, epitaxial Sm–Co films with uniaxial in-plane anisotropy

Epitaxial Sm–Co(11̄00) and (112̄0) films have been grown by magnetron sputtering onto Cr(211) and (100) buffer layers, respectively. The Sm–Co(11̄00) films exhibit uniaxial in-plane anisotropies of ≈20–25 T and room-temperature coercive fields that increase to 4.1 T as the film thickness decreases t...

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Veröffentlicht in:Applied Physics Letters 1997-09, Vol.71 (11), p.1579-1581
Hauptverfasser: Fullerton, Eric E., Jiang, J. S., Rehm, Christine, Sowers, C. H., Bader, S. D., Patel, J. B., Wu, X. Z.
Format: Artikel
Sprache:eng
Schlagworte:
ANISOTROPY
COBALT ALLOYS
COERCIVE FORCE
FERRIMAGNETIC MATERIALS
MAGNETIZATION
MATERIALS SCIENCE
PERMANENT MAGNETS
SAMARIUM ALLOYS
SAMARIUM COMPOUNDS
SPUTTERING
THICKNESS
THIN FILMS
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Beschreibung
Zusammenfassung:Epitaxial Sm–Co(11̄00) and (112̄0) films have been grown by magnetron sputtering onto Cr(211) and (100) buffer layers, respectively. The Sm–Co(11̄00) films exhibit uniaxial in-plane anisotropies of ≈20–25 T and room-temperature coercive fields that increase to 4.1 T as the film thickness decreases to 75 Å. The 3 T coercivities of the (112̄0) films are independent of thickness.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.119970