Anisotropic spin susceptibility of the (Y,Ca),(Ba, La)2Cu4O8 system
Abstract
The normal-state susceptibility, chi, for (Y,Ca)(Ba,La)2Cu4O8 (Y124) was determined up to 300 K. Comparison with the chi data for YBa2Cu3O(x) suggests that antiferromagnetic correlations also persist in undoped and La-substituted Y124. For the La substituted Y124, we measured chi for magnetic fields H parallel and perpendicular to the c axis. Both chi(sub c) for H parallel c and chi(sub ab) for H perpendicular c decrease gradually with decreasing temperature. The temperature-independent difference chi(sub c)-chi(sub ab) suggests that the Cu 3d spin susceptibility in Y124 is isotropic above T(sub c).
- Publication:
-
Presented at the International Conference on Materials and Mechanisms of Superconductivity
- Pub Date:
- 1991
- Bibcode:
- 1991mms..conf...22T
- Keywords:
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- Anisotropy;
- Electron Spin;
- Magnetic Permeability;
- Mixed Oxides;
- Superconductors;
- Yttrium Oxides;
- Antiferromagnetism;
- Barium Oxides;
- Copper Oxides;
- Solid-State Physics