Logarithmic-to-nonlogarithmic flux-creep transition and magnetic-flux hardening in Bi-Sr-Ca-Cu-O superconducting ceramics
- 1 October 1989
- journal article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 40 (10), 7380-7383
- https://doi.org/10.1103/physrevb.40.7380
Abstract
A sharp temperature- and field-dependent transition from a logarithmic to a nonlogarithmic flux-creep behavior has been found in Bi-Sr-Ca-Cu-O superconductors. The transition is not followed by any noticeable change in the magnetization. However, vibrating-reed measurements show that it coincides with a strong hardening of the magnetic structure. The transition occurs at fields and temperatures well below the reversibility line. The possible relation to the recently proposed flux lattice melting is discussed.Keywords
This publication has 12 references indexed in Scilit:
- Physical Properties of the New SuperconductorsPublished by Elsevier ,1989
- Magnetization and critical currents of Bi-Sr-Ca-Cu-O and Ba2YCu3O7 superconductorsApplied Physics Letters, 1988
- Evidence from Mechanical Measurements for Flux-Lattice Melting in Single-Crystal Y andPhysical Review Letters, 1988
- Magnetization and pinning measurements with the vibrating Reed on high-Tc ceramicsPhysica C: Superconductivity and its Applications, 1988
- Giant Flux Creep and Irreversibility in an Y-Ba-Cu-O Crystal: An Alternative to the Superconducting-Glass ModelPhysical Review Letters, 1988
- Vortex Entanglement in High-SuperconductorsPhysical Review Letters, 1988
- The nature of the magnetic flux behavior of the superconductor LaSrCuOSolid State Communications, 1988
- Bc1 of high-Tc La1.8Sr0.2CuO4 and amorphous Zr70Cu30 superconductors measured by a vibrating reedPhysics Letters A, 1987
- Flux trapping and superconductive glass state in:BaPhysical Review Letters, 1987
- Drastic increases of frequency and damping of a superconducting vibrating reed in a longitudinal magnetic fieldPhysical Review Letters, 1986