title: Superconducting and Magnetic Behavior in La2-xNaxCuO4.
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.
authors.forename: M A
authors.initials: MA
authors.lastname: Subramanian
authors.forename: J
authors.initials: J
authors.lastname: Gopalakrishnan
authors.forename: C C
authors.initials: CC
authors.lastname: Torardi
authors.forename: T R
authors.initials: TR
authors.lastname: Askew
authors.forename: R B
authors.initials: RB
authors.lastname: Flippen
authors.forename: A W
authors.initials: AW
authors.lastname: Sleight
authors.forename: J J
authors.initials: JJ
authors.lastname: Lin
authors.forename: S J
authors.initials: SJ
authors.lastname: Poon