Accession Number:

ADA257050

Title:

Far Infrared, Magnetic and Electronic Studies of High Tc Superconducting Materials

Descriptive Note:

Technical rept.

Corporate Author:

LINCOLN UNIV PA DEPT OF PHYSICS

Report Date:

1992-09-30

Pagination or Media Count:

23.0

Abstract:

Most of the studies of flux motion inside the superconductor are concentrated on the magnetization decay in the zero field cooled condition. A fewer work is on field cooled condition. We investigated the time dependence of the isothermal magnetization in the field cooled condition. We found that when the temperature is lower then 35K the isothermal magnetization decreases with time for every temperature at which the isothermal magnetization measurements were carried out. On contrast, when the temperature is higher then 35K, the isothermal magnetization increases at some temperatures but decreases at the others in the period 15-20 hours in which we carried out the measurements. We discuss the mechanism of the discovered time-dependence of the isothermal magnetization based upon the thermal activation theory.

Subject Categories:

  • Inorganic Chemistry
  • Crystallography
  • Electricity and Magnetism
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE