Abstract
Fe Mössbauer spectra have been measured systematically in YBa2(Cu1−x Fex)3Oy prepared by two different heat treatments: the usual treatment (O) and the heat treatment including that under lower oxygen fugacity at high temperatures followed by the oxidation process at low temperatures (NO). From the analysis of the results in terms of binomial random probability, it has been found that the Fe distribution in the Cu(1) site is almost random in the heat treatment (O). Here, the D1 and D2 components in the Mössbauer spectra, which have been assigned to the 4 and 6 oxygen coordinated Fe ions in the Cu(1) site respectively, should correspond to the monomer and cluster Fe ions. In the heat treatment (NO), some of the Fe ions are transferred to the Cu(2) site and there exist only cluster Fe ions in the Cu(1) site, resulting in the characteristic change of macroscopic properties of this system.
Similar content being viewed by others
References
Y. Maeno et al., Nature 328 (1987) 512.
J.M. Tarascon et al., Phys. Rev. B 37 (1988) 7458.
J.L. Hodeau et al., Physica C 153–155 (1988) 582.
Y. Xu et al., Phys. Rev. B 39 (1989) 6667.
B.D. Dunlap et al., Physica C 158 (1989) 397.
F. Bridges et al., Phys. Rev. B 39 (1989) 11603.
S. Katsuyama et al., Mater. Res. Bull. 24 (1989) 603.
S. Katsuyama et al., Physica C 165 (1990) 404.
T. Shibata et al., Japan. J. Appl. Phys. 30 (1991) L175.
H. Mazaki et al., Japan. J. Appl. Phys. 28 (1989) L1909.
S. Nasu et al.,Proc. JIMIS-5, Trans. JIM 29 (1988) Suppl. p. 543.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Yoshimura, K., Shibata, T., Katsuyama, S. et al. Mössbauer study of YBa2(Cu1−x Fex)3Oy from an aspect of distribution of Fe. Hyperfine Interact 79, 863–866 (1993). https://doi.org/10.1007/BF00567618
Issue Date:
DOI: https://doi.org/10.1007/BF00567618