Magnetic anisotropy of ferromagnetic La0.7(Sr, Ca)0.3MnO3 epitaxial films
- 20 September 1999
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 75 (12) , 1778-1780
- https://doi.org/10.1063/1.124817
Abstract
The biaxial and uniaxial magnetic anisotropy in epitaxial (100)-oriented La0.7(Sr, Ca)0.3MnO3 films on different substrates were measured by torque magnetometry in the range from T=20 K to room temperature. The biaxial anisotropy with easy axes 〈110〉 dominates and can be described by a cubic crystal anisotropy constant up to K1≈−104 J/m3. A tendency of increasing |K1| with increasing lattice constant c was explained by compressive stress. The uniaxial anisotropy was |KU|⩽103 J/m3 and explained by anisotropic stress not correlated to the crystal axes.Keywords
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