Determination of the space group of LaCrO3 by convergent-beam electron diffraction

Takuya Hashimoto; Kazunari Takagi; Kenji Tsuda; Michiyoshi Tanaka; Kaori Yoshida; Hiroaki Tagawa; Masayuki Dokiya

doi:10.1149/1.1394078

Determination of the space group of LaCrO₃ by convergent-beam electron diffraction

Takuya Hashimoto, Kazunari Takagi, Kenji Tsuda, Michiyoshi Tanaka, Kaori Yoshida, Hiroaki Tagawa, Masayuki Dokiya

Advanced Interdisciplinary Research Division

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The space group of LaCrO₃ and its variation with temperature was analyzed by selected area electron diffraction (SAED) and by convergent-beam electron diffraction (CBED). All the reflection spots of SAED patterns of LaCrO₃ at room temperature could be indexed as orthorhombic symmetry with primitive lattice of a = 5.479, b = 5.516, and c = 7.766 angstroms. The space group of LaCrO₃ at room temperature was determined to be Pbnm (no. 62) from the analysis of CBED patterns. The reflection spots of SAED patterns which indicated orthorhombic symmetry disappeared with increase in temperature up to 300 °C. From CBED patterns, it was clarified that the crystal system of LaCrO₃ at 300 °C was rhombohedral with space group of R3̄c (no. 167).

Original language	English
Pages (from-to)	4408-4410
Number of pages	3
Journal	Journal of the Electrochemical Society
Volume	147
Issue number	12
DOIs	https://doi.org/10.1149/1.1394078
Publication status	Published - 2000 Dec

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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10.1149/1.1394078

Cite this

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abstract = "The space group of LaCrO3 and its variation with temperature was analyzed by selected area electron diffraction (SAED) and by convergent-beam electron diffraction (CBED). All the reflection spots of SAED patterns of LaCrO3 at room temperature could be indexed as orthorhombic symmetry with primitive lattice of a = 5.479, b = 5.516, and c = 7.766 angstroms. The space group of LaCrO3 at room temperature was determined to be Pbnm (no. 62) from the analysis of CBED patterns. The reflection spots of SAED patterns which indicated orthorhombic symmetry disappeared with increase in temperature up to 300 °C. From CBED patterns, it was clarified that the crystal system of LaCrO3 at 300 °C was rhombohedral with space group of R{\=3}c (no. 167).",

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T1 - Determination of the space group of LaCrO3 by convergent-beam electron diffraction

AU - Hashimoto, Takuya

AU - Takagi, Kazunari

AU - Tsuda, Kenji

AU - Tanaka, Michiyoshi

AU - Yoshida, Kaori

AU - Tagawa, Hiroaki

AU - Dokiya, Masayuki

PY - 2000/12

Y1 - 2000/12

N2 - The space group of LaCrO3 and its variation with temperature was analyzed by selected area electron diffraction (SAED) and by convergent-beam electron diffraction (CBED). All the reflection spots of SAED patterns of LaCrO3 at room temperature could be indexed as orthorhombic symmetry with primitive lattice of a = 5.479, b = 5.516, and c = 7.766 angstroms. The space group of LaCrO3 at room temperature was determined to be Pbnm (no. 62) from the analysis of CBED patterns. The reflection spots of SAED patterns which indicated orthorhombic symmetry disappeared with increase in temperature up to 300 °C. From CBED patterns, it was clarified that the crystal system of LaCrO3 at 300 °C was rhombohedral with space group of R3̄c (no. 167).

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