Magnetic Properties of Amorphous (Tb1-xGdx)30Fe70 Thin Films

Autor:	Yukio Takeno, Kazuhiro Kaneko, Kimiyoshi Goto
Rok vydání:	1991
Předmět:	Magnetic domain Condensed matter physics Chemistry General Engineering General Physics and Astronomy Absolute value Substrate (electronics) Amorphous solid Condensed Matter::Materials Science Magnetic anisotropy Nuclear magnetic resonance Perpendicular Thin film Anisotropy
Zdroj:	Japanese Journal of Applied Physics. 30:1701
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.30.1701
Popis:	Amorphous (Tb1-x Gd x )30Fe70 thin films were prepared at various substrate temperatures (T sub) and with various thicknesses, and their magnetic properties were investigated. The films prepared at T sub=77 K show only in-plane anisotropy, and those prepared at T sub=473 K only perpendicular anisotropy. The films prepared at T sub=300 K are found to simultaneously have two components of anisotropy, the in-plane and the perpendicular. Since the absolute value of K u decreases linearly with the fraction of Gd substitution for Tb, the single-ion anisotropy of Tb is considered to be closely connected with the anisotropy of these films. Thickness dependence of perpendicular anisotropy and that of angular dispersion of the easy axis of the local anisotropy of amorphous Tb15Gd15Fe70 films suggest the formation of small microcrystals in the films to produce the perpendicular anisotropy.
Databáze:	OpenAIRE
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