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57Fe Mössbauer study of YBa4Cu2.95Fe0.05O8.5+y |
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| Authors: | V Sedykh J Jiang G K Strukova U Gonser F E Fujita |
| Institution: | (1) Institute of Solid State Physics, Academy of Sciences, Chernogolovka, SU-142432 Moscow district, USSR;(2) Universität des Saarlandes, Werkstoffwissenschaften, W-6600 Saarbrücken, Fed. Rep. Germany;(3) Research & Development Division, Sumitomo Metal Industries, Ltd., No. 3 1-Chome, Nishinagasu Hondori, Amagasaki, Japan |
| Abstract: | 57Fe Mössbauer measurements were performed on the Fe-doped YBa4Cu3O8.5+y compound as a function of annealing temperature in vacuum. Mössbauer spectra were analyzed using three different quadrupole split doublets. The resistance measurements showed that the compound is not superconducting. The possible identification of the Cu sites with their nearest neighbor oxygen sites in this compound is suggested. Comparison of the results with data of the presence of the superconductor YBa2Cu3O7 allows us to suppose that the presence of the Cu-chain sites alone does not result in superconductivity. |
| Keywords: | 74 70 Vy 76 80 +y |
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