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arXiv · 0904.4092

Tailoring exchange bias in half-metallic La$_{2/3}$Sr$_{1/3}$MnO$_{3}$ thin films for spin-valve applications

P. K. Muduli·R. C. Budhani
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Abstract

We have utilized the antiferromagnetic nature and structural/chemical compatibility of La$_{0.45}$Sr$_{0.55}$MnO$_{3}$ with highly spin polarized La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ to prepare epitaxial exchange bias couples. A robust exchange bias (EB) shift of magnetization hysteresis with associated interfacial exchange energy J $\approx$ 0.13 erg/cm$^2$ at 10 K along with enhanced coercivity are reported. The EB effect was engineered to bring coercivity contrast between La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ and cobalt films in La$_{0.45}$Sr$_{0.55}$MnO$_{3}$/La$_{0.67}$Sr$_{0.33}$MnO$_{3}$/SrTiO$_{3}$/Co magnetic tunnel junctions.

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P. K. Muduli, R. C. Budhani. 2009-04-27. Tailoring exchange bias in half-metallic La$_{2/3}$Sr$_{1/3}$MnO$_{3}$ thin films for spin-valve applications. https://doi.org/10.1063/1.3139770

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