| Literature DB >> 17784070 |
M A Subramanian, J Gopalakrishnan, C C Torardi, T R Askew, R B Flippen, A W Sleight, J J Lin, S J Poon.
Abstract
New phases of the type La2-xAx(l+)CUO4-y have been prepared where A(l+) is sodium or potassium. The sodium phases are superconducting for x values from 0.2 to 0.5 at temperatures up to about 40 K. In addition, there are unusual magnetic properties below about 10 K that may be indicative of spin glass behavior. Phases of the type La2-xKxCuO4-y could only be prepared with x values up to about 0.1, and these phases are not superconducting above 4.2 K.Entities:
Year: 1988 PMID： 17784070 DOI： 10.1126/science.240.4851.495
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728