Characterization of superconducting Bi2Sr2Can-1CunO4+2n phases with 57Fe Mössbauer spectroscopy

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Journal Title
Journal ISSN
Volume Title
School of Chemical Technology | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
1990
Major/Subject
Mcode
Degree programme
Language
en
Pages
4212-4218
Series
Physical Review B, Volume 42, Issue 7
Abstract
In order to study the dependence of superconductivity on sample preparation and the influence of cationic doping, Bi2Sr2Can−1CunO4+2n samples were prepared using various sintering temperatures and nominal starting compositions. After each sintering the samples were characterized with x-ray-diffraction and magnetic-ac-susceptibility measurements. In all cases the corresponding doped57 samples were also made for Mössbauer measurements. The Mössbauer measurements usually show three quadrupole components arising from the different phases in the samples. The site assignment of Fe57 is discussed.
Description
Keywords
Mössbauer spectroscopy, superconductivity, influence of cationic doping
Other note
Citation
Tittonen, I. & Hietaniemi, J. & Huttunen, J. & Lindén, J. & Katila, T. & Karlemo, T. & Karppinen, Maarit & Niinistö, L. & Ullakko, K. 1990. Characterization of superconducting Bi2Sr2Can-1CunO4+2n phases with 57Fe Mössbauer spectroscopy. Physical Review B. Volume 42, Issue 7. 4212-4218. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.42.4212.