Abstract
The semiconducting, green Y2BaCuO5 compound, which is structurally related to the 90K superconductor YBa2Cu3O7-δ, was found to behave like a S= 1 2 Heisenberg quadratic-layer antiferromagnet with an exchange constant of 2J=33.3 ± 0.5 K. There is a peak in the susceptibility at 30 ± 0.5 K, above which it exhibits Curie-Weiss behavior with the Weiss constant estimated at +55.4 K. The local symmetry around the copper (II) ions was found to be rhombic. The orbital reduction factor for Cu2+ in this compound was estimated to be k=0.52, indicating appreciable covalency in the Cu-O bonds.
Original language | English (US) |
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Pages (from-to) | 171-175 |
Number of pages | 5 |
Journal | Solid State Communications |
Volume | 66 |
Issue number | 2 |
DOIs | |
State | Published - Apr 1988 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Chemistry
- Condensed Matter Physics
- Materials Chemistry