Crystallographic features of the C-type orbital-ordered, and charge- and orbital-ordered states in the simple perovskite manganite Ca 1-xLaxMnO3

Yasuhide Inoue, Masazumi Arao, Daisuke Shiga, Yasumasa Koyama

研究成果: Conference contribution

抜粋

The C-type orbital-ordered (CTOO), and charge- and orbital-ordered (COO) states are present in the simple perovskite manganite Ca1-xLa xMnO3, which has a three-dimensional highly-correlated electronic system. In this study, the crystallographic features of the CTOO and COO states have been investigated mainly by transmission electron microscopy to understand responses of a lattice system to these orderings. Of these two states, the cooling from the disordered orthorhombic Pnma (DO) state around x = 0.20 resulted in the CTOO state with the monoclinic P21/m symmetry. As a result of the monoclinic distortion as a response of the lattice system, the CTOO state consisted of a banded structure that was characterized by an alternating array of two monoclinic domains with different β values. In 0.30 < x < 0.50, on the other hand, the appearance of the COO state from the DO state on cooling accompanied a transverse lattice modulation with q = [ 0 0ζ]DO as a response to orbital ordering in the COO state. The subsequent cooling in the COO state led to the antiferromagnetic ordering with a large lattice dilatation. In other words, no change in the crystal symmetry occurs in the appearance of the antiferromagnetic ordering.

元の言語English
ホスト出版物のタイトルTHERMEC 2011
出版者Trans Tech Publications Ltd
ページ1612-1617
ページ数6
ISBN(印刷物)9783037853030
DOI
出版物ステータスPublished - 2012 1 1
イベント7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC, Canada
継続期間: 2011 8 12011 8 5

出版物シリーズ

名前Materials Science Forum
706-709
ISSN(印刷物)0255-5476
ISSN(電子版)1662-9752

Conference

Conference7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
Canada
Quebec City, QC
期間11/8/111/8/5

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

フィンガープリント Crystallographic features of the C-type orbital-ordered, and charge- and orbital-ordered states in the simple perovskite manganite Ca <sub>1-x</sub>La<sub>x</sub>MnO<sub>3</sub>' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Inoue, Y., Arao, M., Shiga, D., & Koyama, Y. (2012). Crystallographic features of the C-type orbital-ordered, and charge- and orbital-ordered states in the simple perovskite manganite Ca 1-xLaxMnO3. : THERMEC 2011 (pp. 1612-1617). (Materials Science Forum; 巻数 706-709). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.706-709.1612