Correlations between the in-plane uniaxial anisotropy and magnetostriction in amorphous (Co{sub 93}Zr{sub 7}){sub 100{minus}x}(RE){sub x} thin films
- CNRS, Meudon (France). Lab. de Magnetisme et Materiaux Magnetiques
- Academy of Science, Warszawa (Poland). Inst. of Physics
The coherent anisotropy and the magnetostriction constants {lambda}{sub s} were studied in amorphous r.f. sputtered (Co{sub 93}Zr{sub 7}){sub 100{minus}x}(RE){sub x} (RE = rare earth) thin films for a large variety of magnetic rare earth, and the concentration range 0{<=}x{<=}3. During the deposition magnetic field of 700 Oe was applied in the film plane. For RE = Nd, Pr, Dy and Tb substitutions, a well defined in-plane uniaxial anisotropy is formed. K{sub u} and {lambda}{sub s} both increase linearly with increasing RE content, the absolute values being related to the substitutional RE element. The magnitude of K{sub u} correlates nicely with that of {lambda}{sub s}, in agreement with a theoretical computation based on a single-ion anisotropy model for rare-earth atoms. When RE = Sm a more heterogeneous local magnetic structure forms as revealed by a biaxial anisotropy and the correlation between K{sub u} and {lambda}{sub s} is no more observed.
- OSTI ID:
- 40196
- Report Number(s):
- CONF-930860-; ISSN 0018-9464; TRN: IM9520%%391
- Journal Information:
- IEEE Transactions on Magnetics, Vol. 30, Issue 2Pt2; Conference: EMMA `93: 5th European magnetic materials and applications conference, Kosice (Slovakia), 24-27 Aug 1993; Other Information: PBD: Mar 1994
- Country of Publication:
- United States
- Language:
- English
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