NDLI: J-mixing effects on the anisotropy of Sm/sub 2/Co/sub 17/

Content Provider	IEEE Xplore Digital Library
Author	Magnani, N. Amoretti, G. Paoluzi, A. Pareti, L.
Copyright Year	1965
Abstract	Measurements of the temperature dependence of the anisotropy field H/sub A/ for Sm/sub 2/Co/sub 17/, Er/sub 2/Co/sub 17/, and Y/sub 2/Co/sub 17/ are reported. Two distinct values mere detected for the samarium compound at low temperature, as a result of the occurrence of in-plane magnetocrystalline anisotropy. From this data it was possible to derive the value of the sixth order anisotropy constant K/sub 3/'. However the crystal field model predicts zero value for the sixth-order anisotropy term if only the ground multiplet of the Sm/sup 3+/ ion is considered. This contradiction between theory and experiment was removed by taking into account the mixing of the lowest spin-orbit multiplets of Sm/sup 3+/ due to the exchange interaction. In this frame it was shown that a linear proportionality relation between K/sub 3/' and the sixth-order crystal field parameter B/sub 66/ is valid. This made possible a direct evaluation of B/sub 66/ from the experimental data. The influence of J mixing on the second-order anisotropy constant K/sub 1/ for Sm/sub 2/Co/sub 17/ and Er/sub 2/Co/sub 17/ was also investigated by analyzing the curve H/sub A/(T) in the temperature range T>200 K.
Sponsorship	IEEE Magnetics Society
Starting Page	2540
Ending Page	2542
Page Count	3
File Size	66223
File Format	PDF
ISSN	00189464
Volume Number	37
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Anisotropic magnetoresistance Erbium Magnetic field measurement Temperature measurement Temperature dependence Samarium Land surface temperature Magnetic anisotropy Perpendicular magnetic anisotropy Predictive models
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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