In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 37, No. 1R ( 1998-01-01), p. 102-
Abstract:
Mössbauer spectroscopy was used to study the effects of composition, temperature, hydrogenation, external magnetic field on series of amorphous Fe 90- x Co x Zr 10 ( x =4, 10, ..., 70) and Fe 90- y Cr y Zr 10 ( y =0, 4, 7, 13, 16, 20) alloys. Magnetic anisotropy and moment distributions in terms of an expansion in spherical harmonies were analyzed. The results reveal the following facts: (i) The hyperfine field distributions P ( H hf )– H hf of a- Fe 90- x Co x Zr 10 ( x =4, 10, 20) and Fe 90- y Cr y Zr 10 ( y =0, 4, 7, 13, 16) comprise two or three Gaussian distributions, the low-field and high-field spin fractions obtained from the fitting of P ( H hf )– H hf curve are changed by Co(Cr) content, temperature, applied magnetic field and hydrogenation. (ii) Anomalous behaviors are found in Co(Cr)-poor Fe–(Co, Cr)–Zr alloys, which means the existence of Invar effect and spin-grass-like behavior. (iii) Hydrogenation gives rise to the drastic changes of the hyperfine parameters, which can mainly be associated with the volume and hybridization effect. (iv) The moment distributions of a- Fe 90- x Co x Zr 10 ( x =4, 10, 20, 30, 40) are preferentially in the direction of the film length. A 90°-type magnetic coupling between spin-clusters in 3DFM and in FSC may exist in Co(Cr)-poor Fe–(Co, Cr)–Zr alloys. A “3DFM+FS+FSC” model containing density inhomogeneity provides a rather satisfactory explanation.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1998
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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