Magnetic switching in epitaxial (110) La2∕3Ca1∕3MnO3 films

2006 
We report on the magnetic anisotropy analysis of (110) La2∕3Ca1∕3MnO3 epitaxial films grown on (110) SrTiO3 substrates. We have measured the angular dependence of the longitudinal (ρxx) and transverse magnetoresistance (ρxy), with current along [001] direction, as a function of the angle θ between the current and the in-plane applied field. The measured ρxx(θ) and ρxy(θ) data reveal sharp variations that reflect the magnetic anisotropy of the system. We show that using a simple model for coherent rotation of magnetization, the shape of measured loops can be well reproduced and data analysis allows us to extract the anisotropy parameters. We will show that the system exhibits uniaxial anisotropy.
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