Abstract
For a sintered rod of at 78.3 K, detailed data are reported for the complicated dependence of the ac susceptibility χ̃=χ’-iχ’’ on applied ac and dc fields, ascribed to the inter- and intragranular components of the material. The intergranular data are understood in detail by a modified critical-state model, assuming a critical current density (H)∼. $chi tilde (H sub roman dc )— also displays hysteresis which is not readily explicable by this model.
- Received 1 August 1990
DOI:https://doi.org/10.1103/PhysRevB.43.11404
©1991 American Physical Society