Magnetization and magnetostriction processes in Tb{sub (0.27{minus}0.30)}Dy{sub (0.73{minus}0.70)}Fe{sub (1.9{minus}2.0)}
- Materials Department, Riso National Laboratory, DK-4000 Roskilde (Denmark)
The present analysis provides Tb{sub (0.27{minus}0.30)}Dy{sub (0.73{minus}0.70)}Fe{sub (1.9{minus}2.0)} magnetization and magnetostriction states during applied magnetic field and stress processes by minimizing the total magnetic free energy in the presence of a parameter selected inverse exponential magnetic free energy distribution. A comparison between experimental and model results shows that the model provides a qualitatively accurate description of the magnetostriction and magnetization in Tb{sub (0.27{minus}0.30)}Dy{sub (0.73{minus}0.70)}Fe{sub (1.9{minus}2.0)} during applied magnetic field processes for a range of constant uniaxial applied stresses. Therefore, the model appears to be a useful tool for the analysis of Tb{sub (0.27{minus}0.30)}Dy{sub (0.73{minus}0.70)}Fe{sub (1.9{minus}2.0)} applications with constant stress or strain dependent stress states. Furthermore, the good qualitative agreement between model and experiment supports the contention that the magnetostriction and magnetization response of Tb{sub (0.27{minus}0.30)}Dy{sub (0.73{minus}0.70)}Fe{sub (1.9{minus}2.0)} is influenced by a defect induced defocusing of local magnetization direction about the average magnetization direction. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 467209
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 5 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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