Features of highly correlated electronic states in the simple perovskite manganite Sr1-xSmxMnO3 with 0.15 ≤ x ≤ 0.50

Misato Yamagata, Tomoki Endo, Yasuhide Inoue, Yasumasa Koyama

研究成果: Article査読

1 被引用数 (Scopus)


The C- and A-type antiferromagnetic orderings have been reported in the highly correlated electronic manganite Sr1-xSmxMnO3 (SSMO) with the simple perovskite structure in the composition range of 0.34 ≤ x ≤ 0.46. Because these antiferromagnetic orderings should be coupled to orbital orderings, the crystallographic features of SSMO samples prepared with 0.15 ≤ × ≤ 0.50 have been investigated, mainly by X-ray powder diffraction and transmission electron microscopy, to understand the detailed features of the corresponding orbital-ordered states. It was found that around 100 K, for instance, the C-type orbital-ordered (COO) state was observed for 0.15 ≤ x ≤ 0.42, the orbital-modulated (OM) state for 0.44 ≤ x < 0.50, and the coexistence state of both ferromagnetic Pnma (I) and paramagnetic Pnma (II) regions for x = 0.50, where the OM state was characterized by a transverse lattice modulation with an incommensurate periodicity. Neither the A-type orbital-ordered state nor the CE-type state involving both orbital and charge modulations was found in the SSMO samples. The reasons for their absence are also discussed on the basis on the experimental data obtained in this study.

ジャーナルjournal of the physical society of japan
出版ステータスPublished - 2017 5 15

ASJC Scopus subject areas

  • 物理学および天文学(全般)


「Features of highly correlated electronic states in the simple perovskite manganite Sr<sub>1-x</sub>Sm<sub>x</sub>MnO<sub>3</sub> with 0.15 ≤ x ≤ 0.50」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。