Signature of twin planes in Mössbauer spectroscopy of cuprate superconductors |
| |
| Authors: | P. Boolchand C. Blue K. Elgaid W. Huff A. Kilinc D. McDaniel P. Biswas D. Zhou J. Oostens |
| |
| Affiliation: | (1) Department of Electrical and Computer Engineering, University of Cincinnati, 45221-0030 Cincinnati, OH, USA;(2) Department of Geology, University of Cinicinnati, 45221-0030 Cincinnati, OH, USA;(3) Department of Chemistry, University of Cincinnati, 45221-0030 Cincinnati, OH, USA;(4) Department of Civil and Environmental Engineering, University of Cincinnati, 45221-0030 Cincinnati, OH, USA;(5) Present address: Department of Physics, University of Cincinnati, 45221-0030 Cincinnati, OH, USA |
| |
| Abstract: | One of the four quadrupole doublets (A, B, C, and D) observed in Mössbauer spectra of orthorhombic (Y or RE)1Ba2(Cu1-xFex)307-δ(δ≈0) samples is identified with Fe dopant replacing a Cu site in twin planes. The site in question, labelled as D, is characterized by a quadrupole splitting ΔD in the range 1.6±0.1 mm/s. The D-site intensity is found to approach zero when the 1-2-3, material is driven tetragonal, either upon oxygen desorption, upon oxygen loading, or upon increasing the Fe-dopant concentration. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
