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- Title
Local Structural Properties Around Cu Atoms in Checkerboard Phased CaNaCuOCl.
- Authors
Kim, K.-H.; Lee, H.-G.; Han, S.-W.
- Abstract
We examined the local structural properties of checkerboard phased CaNaCuOCl ( T=0, 15, 21, 27 K) using extended X-ray absorption fine structure (EXAFS) measurements at the Cu K edge. EXAFS revealed anomalous disorders existing in the bond lengths of Cu-Cu and Cu-Ca/Na pairs for all crystals below 50 K. A static disorder was observed even at room temperature. The disorders of the Cu-Cu in the a- and b-axes were independent of the T value whereas these of the Cu-Ca/Na pairs located about 30 off from the Cu-O, ab-plane decreased, as T increased.
- Subjects
MAGNETIC properties of copper; SUPERCONDUCTIVITY; POTASSIUM; FINE structure (Physics); X-ray absorption; STATICS
- Publication
Journal of Superconductivity & Novel Magnetism, 2013, Vol 26, Issue 5, p1795
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-012-2061-8