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論文

Magnetic and electronic properties of B-site-ordered double-perovskite oxide La$$_{2}$$CrMnO$$_{6}$$ thin films

吉松 公平*; 石丸 純也*; 渡会 啓介*; 山本 航平*; 平田 靖透*; 和達 大樹*; 竹田 幸治; 堀場 弘司*; 組頭 広志*; 坂田 修身*; et al.

Physical Review B, 99(23), p.235129_1 - 235129_8, 2019/06

 被引用回数:6 パーセンタイル:47.66(Materials Science, Multidisciplinary)

We report on magnetic and electronic properties of the B-site-ordered double-perovskite La$$_{2}$$CrMnO$$_{6}$$ films grown by pulsed-laser deposition. The magnetic-field dependence of magnetization curves showed hysteresis at low temperatures regardless of the degree of Cr/Mn order and the saturation magnetization became smaller for the higher-Cr/Mn-ordered film. The X-ray absorption spectroscopy and X-ray magnetic circular dichroism measurements suggested antiferromagnetic coupling between Cr$$^{3+}$$ and Mn$$^{3+}$$ ions, resulting in ferrimagnetism of the B-site-ordered double-perovskite La$$_{2}$$CrMnO$$_{6}$$. A band structure was established by combining these results together with the synchrotron-radiation photoemission and optical spectra. We discuss the magnetic states among the $$B$$-site-ordered La$$_{2}$$$$B'$$MnO$$_{6}$$ ($$B':3d$$ transition-metal elements from V to Ni) being basically consistent with the Kanamori-Goodenough rule.

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