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Magnetization and flux pinning in high-[Tc] cuprates: Irradiated and oxygen deficient materials

Conference ·
OSTI ID:6923563
 [1]; ;  [2]; ; ; ;  [3]; ; ;  [4]
  1. Oak Ridge National Lab., TN (United States) Tennessee Univ., Knoxville, TN (United States). Dept. of Physics
  2. Tennessee Univ., Knoxville, TN (United States). Dept. of Physics
  3. Oak Ridge National Lab., TN (United States)
  4. IBM Watson Research Center,
This work surveys recent studies of the intragrain current density J and vortex pinning in high Tc superconductors. Materials include Y[sub 1]Ba[sub 2]Cu[sub 3]O[sub 7-[delta]] and Bi[sub 2]Sr[sub 2]Ca[sub 1]Cu[sub 2]O[sub 8] single crystals and aligned polycrystals. To probe the flux pinning, we modified the strength, number, and morphology of defects. Varying the oxygen content (7-[delta]) in YBa[sub 2]Cu[sub 3]O[sub 7-[delta]] or irradiating the materials with ions, having either light or heavy masses, gives systematic changes in the character of the all-important defects.
Research Organization:
Oak Ridge National Lab., TN (United States)
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC05-84OR21400
OSTI ID:
6923563
Report Number(s):
CONF-9211144-2; ON: DE93004169
Country of Publication:
United States
Language:
English