J.F. Bringley, B.A. Scott, et al.
Physical Review B
A single-crystal of YBa2Cu2.85Fe0.15O 7 was found to be tetragonal over the temperature range 10-300 K. The iron obeyed a Curie-Weiss law attributed to divalent Fe and showed a negative intercept indicating antiferromagnetic exchange. The presence of Fe degraded the superconducting properties such that critical currents are only 10%-20% of that in the best pure YBa2Cu3O7-δ crystals without Fe and the superconducting transition temperature has decreased from 90 to 60 K.
J.F. Bringley, B.A. Scott, et al.
Physical Review B
S.J. Pickart, H.A. Alperin, et al.
Journal of Applied Physics
F. Holtzberg, S.J. LaPlaca, et al.
Journal of Applied Physics
B.A. Scott, E.Y. Suard, et al.
Physica C: Superconductivity and its applications