Mean-field analysis of amorphous rare earth-transition metal alloys for thermomagnetic recording
- 1 January 1986
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Magnetics
- Vol. 22 (1) , 33-43
- https://doi.org/10.1109/tmag.1986.1064266
Abstract
A mean-field model is developed for amorphous ferromagnetic materials with potential applications in thermomagnetic recording/magneto-optical readout systems. The emphasis is on the reduction of the number of adjustable parameters, so that important variables and their effects on magnetic properties can be investigated. The available experimental data on GdCo-, GdFe-, and TbFe-based alloys is compared with the model predictions and good agreement is obtained in all cases. Expressions for the exchange stiffness coefficient and macroscopic anisotropy energy constant are derived and the latter is compared with available experimental data. The results have been used to study domain wall characteristics of the three material systems.Keywords
This publication has 23 references indexed in Scilit:
- Magneto-optic disk storageIEEE Transactions on Magnetics, 1982
- Magnetic properties of amorphous GdFeB and GdCoB alloysJournal of Applied Physics, 1982
- An investigation of amorphous Tb-Fe thin films for magneto-optic memory applicationIEEE Transactions on Magnetics, 1980
- Magnetic properties of the transition metals in the amorphous ternary alloys: , , andPhysical Review B, 1980
- Magnetic anisotropy from dipolar interactions in amorphous ferrimagnetic alloysJournal of Applied Physics, 1979
- Mean field analysis of the magnetic properties of amorphous transition-metal–rare-earth alloysJournal of Applied Physics, 1978
- Mean field analysis of the magnetic properties of vapor deposited amorphous Fe-Gd thin filmsJournal of Applied Physics, 1978
- Initial magnetization, remanence, and coercivity of the random anisotropy amorphous ferromagnetPhysical Review B, 1977
- Modified mean-field model for rare-earth–iron amorphous alloysJournal of Applied Physics, 1976
- Temperature and compositional dependence of magnetic bubble properties of amorphous Gd-Co-Mo filmsJournal of Applied Physics, 1975