K.N. Tu
Materials Science and Engineering: A
We find that, for ceramic samples of YBa2Cu3Ox, the microwave absorption in a dc magnetic field H and at a temperature T is different for field cooling than for zero field cooling, provided T is below a field-dependent irreversibility temperature. Since the microwaves probe only a layer at the surface of the sample, the irreversibility line in H-T space determined in this way is a property of the surface layer with a thickness given by the microwave skin depth. When the applied H is removed, we observe a remanent microwave absorption which decays logarithmically with time. © 1989 The American Physical Society.
K.N. Tu
Materials Science and Engineering: A
T. Schneider, E. Stoll
Physical Review B
A.B. McLean, R.H. Williams
Journal of Physics C: Solid State Physics
Zelek S. Herman, Robert F. Kirchner, et al.
Inorganic Chemistry