New aspect of low-temperature phase transitions of La-cuprates

Y. Horibe*, Y. Inoue, Y. Koyama

*この研究の対応する著者

研究成果: Article査読

3 被引用数 (Scopus)

抄録

The change in the microstructure on aging at 12 K below a low-temperature structural phase transition in La1.5Sr0.1Nd0.4CuO4 has been examined by transmission electron microscopy. From a series of 100 forbidden dark field images obtained in in situ observation, spotty-shape regions with a Pccn/LTT tilt of the CuO6 octahedron were found to be nucleated and grow inside a LTO domain, accompanying the annihilation of some spotty-shape regions. In addition, there exists a tweed texture in fundamental dark field images, which is due to the macroscopic strain involved in the transition. Because a map of the tweed texture is different from that of the spotty-shape region, the tilt of the octahedron is not always coupled to a proper spontaneous strain.

本文言語English
ページ(範囲)461-466
ページ数6
ジャーナルJournal of Superconductivity
10
4
DOI
出版ステータスPublished - 1997 8月

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 物理学および天文学(その他)

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