Crystal symmetry and superlattice reflections in spin-Peierls system TiOBr

T. Sasaki, T. Nagai, K. Kato, M. Mizumaki, T. Asaka, M. Takata, Y. Matsui, H. Sawa, J. Akimitsu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We have demonstrated the direct observation of the crystal symmetry by electron and synchrotron X-ray diffraction analyses. Although the crystal structure at room temperature can be explained by orthorhombic Pmmn symmetry in our powder X-ray diffraction analysis, we detected weak reflections which should be the forbidden reflections of the Pmmn symmetry by electron and synchrotron X-ray diffraction analyses using single-crystalline TiOBr samples. We concluded that the crystal symmetry of TiOBr is different from the orthorhombic Pmmn symmetry. In this report, we discuss the crystal symmetry on the basis of the subgroup of orthorhombic Pmmn at room temperature and low temperature below Tc1(=27 K).

Original languageEnglish
Pages (from-to)17-21
Number of pages5
JournalScience and Technology of Advanced Materials
Volume7
Issue number1 SPEC. ISS.
DOIs
Publication statusPublished - Jan 2006
Externally publishedYes

Keywords

  • Crystal symmetry
  • Electron diffraction
  • Spin-Peierls
  • TiOBr
  • X-ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)

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