Characteristic features of low-temperature structural phase transitions in La2-xSrxCuO4

Y. Inoue, Y. Horibe, Y. Koyama

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Features of low-temperature structural phase transitions in La2-xSrxCuO4 with x=0.115 and 0.15 have been examined by transmission electron microscopy. There are 100-type forbidden spots due to the Pccn/LTT phase as well as fundamental spots due to the LTO phase in the electron-diffraction patterns of La2-xSrxCuO4 with x=0.115 and 0.15 at 12 K. As for 100-type forbidden dark field images at 12 K, a bright-line contrast due to the Pccn/LTT phase exists only along the twin boundary in the LTO phase for x=0.15. In the case of x=0.115, a bright-spot contrast due to the Pccn/LTT phase also appears partially inside the LTO domains, in addition to the bright-line contrast along the twin boundary. That is, the low-temperature transition in X=0.115 is characterized by the appearance of the Pccn/LTT phase with the spotty shape inside the LTO domain.

Original languageEnglish
Pages (from-to)361-366
Number of pages6
JournalJournal of Superconductivity
Volume10
Issue number4
DOIs
Publication statusPublished - 1997 Aug

Keywords

  • La-SrCuO
  • Structural phase transitions
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

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