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

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

doi:10.1103/PhysRevB.84.064436

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

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

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

We report on the 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 μ_B per formula unit at 5 K. The result is consistent with the antiferromagnetic ordering of local spin moment (3d3 _↓3d5_↑; S = -3/2 + 5/2 = 1). Therefore, the magnetic ground state of La₂CrFeO₆ double perovskite that has been long debated 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.

Original language	English
Article number	064436
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	84
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.84.064436
Publication status	Published - 2011 Aug 26
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Ferrimagnetism and spontaneous ordering of transition metals in double perovskite La₂CrFeO₆ films. / Chakraverty, S.; Ohtomo, A.; Okuyama, D.; Saito, M.; Okude, M.; Kumai, R.; Arima, T.; Tokura, Y.; Tsukimoto, S.; Ikuhara, Y.; Kawasaki, M.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 84, No. 6, 064436, 26.08.2011.

Research output: Contribution to journal › Article › peer-review

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abstract = "We report on the 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 μB per formula unit at 5 K. The result is consistent with the antiferromagnetic ordering of local spin moment (3d3 ↓3d5↑; S = -3/2 + 5/2 = 1). Therefore, the magnetic ground state of La2CrFeO6 double perovskite that has been long debated 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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AU - Chakraverty, S.

AU - Ohtomo, A.

AU - Okuyama, D.

AU - Saito, M.

AU - Okude, M.

AU - Kumai, R.

AU - Arima, T.

AU - Tokura, Y.

AU - Tsukimoto, S.

AU - Ikuhara, Y.

AU - Kawasaki, M.

PY - 2011/8/26

Y1 - 2011/8/26

N2 - We report on the 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 μB per formula unit at 5 K. The result is consistent with the antiferromagnetic ordering of local spin moment (3d3 ↓3d5↑; S = -3/2 + 5/2 = 1). Therefore, the magnetic ground state of La2CrFeO6 double perovskite that has been long debated 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.

AB - We report on the 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 μB per formula unit at 5 K. The result is consistent with the antiferromagnetic ordering of local spin moment (3d3 ↓3d5↑; S = -3/2 + 5/2 = 1). Therefore, the magnetic ground state of La2CrFeO6 double perovskite that has been long debated 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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