Spin reorientations in RTiFe sub 11 systems (R = Tb, Dy and Ho)
The compound SmTiFe11 has been reported to possess high uniaxial magnetocrystalline anisotropy. This high anisotropy is a result of the fact that both the rare earth and transition metal sublattices favor an axial orientation. Since, in this structure, Sm prefers the magnetization to lie long the c-axis those rare earths with negative second order Stevens' factors, such as Tb, Dy and Ho, are likely candidates to exhibit Type 2 spin reorientations, due to competing anisotropies of the rare earth and transitions and show that the nature of the spin reorientation (axis-to-plane in the case of Tb, and axis-to-cone in the case of Dy and Ho) correlates with the sign of the fourth order Stevens factor. It is further shown that, with the exception of the cone-to-plane transition of the Dy system, these spin reorientations can be explained in terms of the thermal evolution of the first and second anisotropy constants, K1 and K2.
- Research Organization:
- Carnegie-Mellon Univ., Pittsburgh, PA (USA). Dept. of Metallurgical Engineering and Materials Science
- OSTI ID:
- 6229076
- Report Number(s):
- AD-A-226462/0/XAB; CNN: DAAL03-87-K-0150
- Country of Publication:
- United States
- Language:
- English
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