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arXiv · 1107.5891

Ferrimagnetism and spontaneous ordering of transition-metals in La2CrFeO6 double-perovskite films

S. Chakraverty·A. Ohtomo·D. Okuyama·M. Saito·M. Okude·R. Kumai·T. Arima·Y. Tokura·S. Tsukimoto·Y. Ikuhara·M. Kawasaki
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Abstract

We report on atomic ordering of B-site transition-metals and magnetic properties of epitaxial La2CrFeO6 double-perovskite films grown by pulsed-laser deposition under various conditions. The highest ordered sample exhibited a fraction of antisite-disorder of only 0.05 and a saturation magnetization of ~2\mu_{B} per formula unit at 5 K. The result is consistent with the antiferromagnetic ordering of local spin moment (3d^{3}_{\downarrow}3d^{5}_{\uparrow}; S = -3/2+5/2 = 1). Therefore, the magnetic ground state of La2CrFeO6 double-perovskite that has been long debate is unambiguously revealed to be ferrimagnetic. Our results present a wide opportunity to explore novel magnetic properties of binary transition-metal perovskites upon epitaxial stabilization of the ordered phase.

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S. Chakraverty, A. Ohtomo, D. Okuyama, M. Saito, M. Okude, R. Kumai, T. Arima, Y. Tokura, S. Tsukimoto, Y. Ikuhara, M. Kawasaki. 2011-07-29. Ferrimagnetism and spontaneous ordering of transition-metals in La2CrFeO6 double-perovskite films. https://arxiv.org/abs/1107.5891

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