Superconducting and magnetic behavior in La2-xNaxCuO4

Subramanian, M. A. ; Gopalakrishnan, J. ; Torardi, C. C. ; Askew, T. R. ; Flippen, R. B. ; Sleight, A. W. ; Lin, J. J. ; Poon, S. J. (1988) Superconducting and magnetic behavior in La2-xNaxCuO4 Science, 240 (4851). pp. 495-497. ISSN 0036-8075

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New phases of the type La2-xAxl+CUO4-y have been prepared where Al+ 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.

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Deposited On:25 Feb 2012 05:47
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