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Microwave absorption studies on high-T sub c superconductors and related materials 7--ESR of DPPH coated on a thin BiSrCaCuO film fabricated on MgO(100) substrate

Journal Article · · International Journal of Modern Physics B; (United States)
OSTI ID:7039581
; ; ;  [1]
  1. Superconductivity Research Lab., ISTEC, 10-13 Shinonome 1-chome, Koto-ku, Tokyo 135 (JP)
+ Show Author Affiliations
In this paper, ESR of DPPH coated on a Bi-Sr-Ca-Cu-O (BSCCO) film (350 {Angstrom} thick) fabricated on MgO(100) substrate by MOCVD is studied. Temperature dependence of the ESR peak-to-peak linewidth, {Delta}H{sub pp}, and the effect of applied magnetic field on {Delta}H{sub pp} are below about 100 K. The results are compared with those of ESR of DPPH coated on ceramic Y-Ba-Cu-O samples (powder and bulk) made by the MPMG method. The DPPH ESR for the BSCCO film reveals that {Delta}H{sub pp} was independent of applied magnetic field up to about 9 kG. In addition, no similarity between the temperature dependence of the excess ESR linewidth of the DPPH and that of critical current density was found for the BSCCO film. These results for the BSCCO film are different from those for the MPMG YBCO samples.
OSTI ID:
7039581
Journal Information:
International Journal of Modern Physics B; (United States), Journal Name: International Journal of Modern Physics B; (United States) Vol. 6:11; ISSN 0217-9792; ISSN IJPBE
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
661200 -- Techniques of General Use in Physics-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COATINGS
COMPARATIVE EVALUATIONS
COPPER COMPOUNDS
CRITICAL CURRENT
CUPRATES
CURRENTS
DEPOSITION
DPPH
ELECTRIC CURRENTS
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
EVALUATION
FILMS
HIGH-TC SUPERCONDUCTORS
LINE WIDTHS
MAGNETIC FIELDS
MAGNETIC RESONANCE
MICROWAVE RADIATION
NITRO COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
RADIATIONS
RADICALS
RESONANCE
SORPTION
STRONTIUM COMPOUNDS
SUPERCONDUCTING FILMS
SUPERCONDUCTORS
SURFACE COATING
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0065-0273 K
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS