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Interfacing Oxides

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Publications::

Betto, D; Thiyagarajah, N; Lau, YC; Piamonteze, C; Arrio, MA; Stamenov, P ; Coey, JMD; Rode, K
Site-specific magnetism of half-metallic Mn2RuxGa thin films determined by x-ray absorption spectroscopy
Physical Review B 91 (2015), 094410

The site-specific magnetic properties of thin films of the Heusler compound Mn2Ru(x)Ga, 0.6 < x < 1.0, are studied using x-ray absorption and dichroism spectroscopy. There is evidence of half metallicity up to x = 0.7, and compensation of the Mn 4a and 4c moments in this range, leading to a zero-moment half metal. We also also discuss the effect of substrate-induced strain on the magnetic properties. By tuning the biaxial strain, simultaneous perfect magnetic compensation and half-metallic character is achievable at, below, or above room temperature.

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