| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-2143 - C8-2144 | |
| DOI | https://doi.org/10.1051/jphyscol:19888959 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-2143-C8-2144
DOI: 10.1051/jphyscol:19888959
1 Department of Physics, The Ohio State University, Columbus, Ohio 43210, U.S.A.
2 Department of Physics, University of Hawaii, Honolulu, HI 96822.
3 Central Research and Development Department, E.I. Du Pont de Nemours & Co. Wilmington, Delaware 19898, U.S.A.
4 Department of Physics and Department of Chemistry, The Ohio State University, Columbus, Ohio 43210-1106, U.S.A.
J. Phys. Colloques 49 (1988) C8-2143-C8-2144
DOI: 10.1051/jphyscol:19888959
MAGNETIC FIELD DEPENDENCE OF HIGH Tc SEMICONDUCTING CERAMICS
F. Zuo1, X. D. Chen1, J. R. Gaines1, 2, W. E. Farneth3, R. S. McLean3 et A. J. Epstein41 Department of Physics, The Ohio State University, Columbus, Ohio 43210, U.S.A.
2 Department of Physics, University of Hawaii, Honolulu, HI 96822.
3 Central Research and Development Department, E.I. Du Pont de Nemours & Co. Wilmington, Delaware 19898, U.S.A.
4 Department of Physics and Department of Chemistry, The Ohio State University, Columbus, Ohio 43210-1106, U.S.A.
Abstract
We report the magnetization M as a function of magnetic field H and temperature T for both semiconducting La2-xSrxCuO4-y and Y1Ba2Cu3O6+x. An anomalous magnetic field dependence has been observed for each of these samples. Below TN, the application of high field at small x (< 0.02) for La2-xSrxCuO4-y and for Y1Ba2Cu3O6+x at x = 0, there is an anomalous behavior for M (H), suggestive of a presence of a ferromagnetic component. For Y1Ba2Cu3O6+x samples of x = 0.25 and 0.34, there is a sublinear behavior of M on H. Possible odels are discussed for these novel phenomena.