Title :
Grain size dependence of low field microwave absorption in Y1 Ba2Cu3O7 powders
Author :
Gould, A. ; Tyagi, S.D. ; Bhagat, S.M. ; Manheimer, M.A.
Author_Institution :
Dept. of Phys. & Astron., Maryland Univ., College Park, MD, USA
fDate :
9/1/1989 12:00:00 AM
Abstract :
The authors report investigations on the influence of low (≲65 Oe) magnetic fields on microwave absorption in several Y1 Ba2Cu3O7 powders at 2, 10, 22, and 35 GHz at temperatures varying between 1.3 K and 77 K. Even powders which show negligible zero-field absorption have a significant induced absorption at low fields. At low T there is a large frequency-dependent magnetic hysteresis in the field-induced absorption
Keywords :
barium compounds; electromagnetic wave absorption; grain size; high-temperature superconductors; magnetic hysteresis; powders; yttrium compounds; 1.3 to 77 K; 2 to 35 GHz; SHF; Y1Ba2Cu3O7 powders; field-induced absorption; frequency-dependent magnetic hysteresis; high temperature superconductors; low field microwave absorption; magnetic fields; Amplitude modulation; Cooling; Educational institutions; Electromagnetic wave absorption; Grain size; Magnetic field measurement; Magnetic fields; Powders; Superconductivity; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
