Structural modulation induced by the incommensurate antiferromagnetic phase transition in ZnCr2Se4
SCIE
SCOPUS
- Title
- Structural modulation induced by the incommensurate antiferromagnetic phase transition in ZnCr2Se4
- Authors
- Hidaka, M; Yoshimura, M; Tokiwa, N; Akimitsu, J; Park, YJ; Park, JH; Ji, SD; Lee, KB
- Date Issued
- 2003-04
- Publisher
- WILEY-V C H VERLAG GMBH
- Abstract
- The structural properties of normal-type spinel ZnCr2Se4 have been studied as a function of temperature by means of X-ray diffraction using synchrotron radiation. It is found that a structural phase transition from cubic to orthorhombic symmetry occurs at 22.5 K (T-c). It is also found that, below T-c, Se ions are cooperatively displaced in a pseudo-tetragonal (001) plane. Since the Cr3+ ion has no orbital angular momentum, a CrSe6 octahedron is not distorted by a crystal field produced by surrounding Se2- anions. It is interpreted that the pseudo-tetragonal displacements of Se ions are induced by magnetostriction among Cr3+ ions in CrSe2 chains, in which Cr ions share two Se2- with each other along <110>.
- Keywords
- ZN1-XCUXCR2SE4; SPINELS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/18580
- DOI
- 10.1002/PSSB.2003015
- ISSN
- 0370-1972
- Article Type
- Article
- Citation
- PHYSICA STATUS SOLIDI B-BASIC RESEARCH, vol. 236, no. 3, page. 570 - 577, 2003-04
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