Numéro
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
Page(s) C8-2157 - C8-2158
DOI https://doi.org/10.1051/jphyscol:19888966
Proceedings of the International Conference on Magnetism

J. Phys. Colloques 49 (1988) C8-2157-C8-2158

DOI: 10.1051/jphyscol:19888966

PHASE DIAGRAM OF MAGNETIC ORDER AND SUPERCONDUCTIVITY IN HIGH-Tc YBa2Cu3Ox

Y. Kitaoka1, K. Ishida1, K. Asayama1, H. Takagi2, H. Iwabuchi2 et S. Uchida2

1  Department of Material Physics, Faculty of Engineering Science, Osaka University, Toyonaka, Osaka 560, Japan
2  Engineering Research Institute, Faculty of Engineering, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan


Abstract
Nuclear quadrupole resonance (NQR) experiments on tetragonal YBa2Cu3Ox with x = 6.3 and 6.4 reveal a successive magnetic transition associated with the chain site at 20 K well below TN ˜ 400 K, while such transition has not been observed down to 1.3 K for x = 6.1. The second transition appears in the vicinity of the superconductivity.