Loading...
Please wait, while we are loading the content...
Similar Documents
Short Range Order in High $T_{c}$ Superconductors $Ba_{x}Y_{1-x}CuO_{3-y}$ and $Sr_{x}La_{2-x}CuO_{4-y}$
| Content Provider | Scilit |
|---|---|
| Author | Oyanagi, Hiroyuki Ihara, Hideo Matsushita, Tadashi Hirabayashi, Masayuki Terada, Norio Tokumoto, Madoka Senzaki, Kiyoshi Kimura, Yoichi Yao, Takafumi |
| Copyright Year | 1987 |
| Description | Journal: Japanese Journal of Applied Physics Short range order in high T$ _{c}$ superconductors $Sr_{ x }La_{2-x }CuO_{4-y }$ and $Ba_{ x }Y_{1-x }CuO_{3-y }$ have been analyzed by extended X-ray absorption fine structure (EXAFS) on the Cu K-edge. The radial distribution around $Cu^{+}$ and $Cu^{2+}$ ions in oxygen-deficient $Sr_{ x }La_{2-x }CuO_{4-y }$ is interpreted in terms of a modified $K_{2}NiF_{4}$ structure which is characterized by i) vacancies in the axial oxygen sites of $CuO_{6}$ octahedron and ii) the displacement of La(Sr) positions along the c-axis. In $Ba_{ x }Y_{1-x }CuO_{3-y }$, the radial distribution of oxygens around $Cu^{2+}$ and $Cu^{3+}$ ions indicates that average 4.8 oxygen atoms are present at 1.925 Å. A possible model is presented to describe the cooperative motions of oxygen atoms in the basal plane which are induced by the valence fluctuation of Cu ions. |
| Related Links | http://iopscience.iop.org/article/10.1143/JJAP.26.L828/pdf |
| ISSN | 00214922 |
| e-ISSN | 13474065 |
| DOI | 10.1143/jjap.26.l828 |
| Journal | Japanese Journal of Applied Physics |
| Issue Number | 5A |
| Volume Number | 26 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1987-05-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Japanese Journal of Applied Physics Superconductors Ba Superconductors Sr Range Order in High |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Engineering |
