Document Detail

High-voltage high-resolution electron microscopy study of alkaline-earth copper oxides.
MedLine Citation:
PMID:  9523759     Owner:  NLM     Status:  MEDLINE    
Two families of alkaline-earth copper oxides are studied by using high-voltage high-resolution electron microscopy. One is Sr(n-1) Cu(n)O(2n-1) (n = 2, 3), the so-called spin-ladder compounds, and the other is ACuO2 (A = Ca-Sr) crystallizing in the infinite-layer structure, which is a parent structure for all copper oxide superconductors. It is demonstrated in the former compounds that oxygen columns as well as metal columns are directly imaged in a "structure" image. Moreover, twin-related lattice defects, which can be the origin of free Cu2+ spins observed previously in magnetic measurements, have been detected in SrCu2O3. An interesting irradiation effect under a 1,000-kV electron beam has been observed in the infinite-layer compound: An unusual structural phase transformation to a NaCl-type lattice is induced, accompanied by the formation of nm-size twin domains.
Z Hiroi; S Horiuchi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Microscopy research and technique     Volume:  40     ISSN:  1059-910X     ISO Abbreviation:  Microsc. Res. Tech.     Publication Date:  1998 Feb 
Date Detail:
Created Date:  1998-05-05     Completed Date:  1998-05-05     Revised Date:  2000-12-18    
Medline Journal Info:
Nlm Unique ID:  9203012     Medline TA:  Microsc Res Tech     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  251-64     Citation Subset:  IM    
Institute for Chemical Research, Kyoto University, Japan.
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MeSH Terms
Copper / chemistry*
Image Processing, Computer-Assisted
Metals, Alkaline Earth / chemistry*
Microscopy, Electron
Models, Molecular
Oxides / chemistry*
Strontium / chemistry
Reg. No./Substance:
0/Metals, Alkaline Earth; 0/Oxides; 7440-24-6/Strontium; 7440-50-8/Copper; 7782-44-7/Oxygen

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