Random anisotropy studies in amorphous FeTmB

Random anisotropy studies in amorphous FeTmB

We have studied the magnetization of melt spun amorphous Fe 80 − x Tm x B 20 alloys with 0 ⩽ x ⩽ 15 under magnetic fields up to 18 kOe, and have analyzed the results at different temperatures based on the random magnetic anisotropy model. Exchange interactions J FeFe and J FeTm evaluated by the fitt...

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Veröffentlicht in:Physica. B, Condensed matter Condensed matter, 1997-10, Vol.240 (4), p.372-377
Hauptverfasser: Slimani, M., Hamdoun, M., Tlemçani, M., Arhchoui, H., Sayouri, S.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Exchange and superexchange interactions
Fe 80− xTm xB 20
Magnetic anisotropy
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Magnetization
Metals. Metallurgy
Physics
Random anisotropy
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Zusammenfassung:We have studied the magnetization of melt spun amorphous Fe 80 − x Tm x B 20 alloys with 0 ⩽ x ⩽ 15 under magnetic fields up to 18 kOe, and have analyzed the results at different temperatures based on the random magnetic anisotropy model. Exchange interactions J FeFe and J FeTm evaluated by the fitting of M- T curves are discussed. The local random anisotropy K L and the exchange constant A are found to decrease with increasing temperature. Experimental data show that the ferromagnetic correlation length R f decreases with increasing Tm content.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(97)00427-4