TY - JOUR
T1 - Oxygen annealing and superconductivity of HgBa2Ca2Cu3O8+y thin films
AU - Kang, W. N.
AU - Lee, Sung Ik
AU - Chu, C. W.
N1 - Funding Information:
We would like to thank R.L. Meng for useful discussions. This work is supported in part by the Korea Ministry of Science and Technology through the Creative Research Initiative Program.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1999/4/20
Y1 - 1999/4/20
N2 - We studied the effects of oxygen-annealing temperature on the superconductivity of epitaxial HgBa2Ca2Cu3O8+y thin films fabricated by pulsed laser deposition. The highest transition temperature of 133 K for the films grown on (100) SrTiO3 was obtained after oxygen annealing at 340 °C for 12 h. The observed critical current density of 1.9×107 A/cm2 at 10 K, and 2.6×105 A/cm2 at 120 K in zero-field is high enough for the application of the superconducting quantum interference devices (SQUIDs) operated at 120 K. A dimensional crossover from 3D to 2D vortex states is observed from the temperature dependence of the irreversibility line.
AB - We studied the effects of oxygen-annealing temperature on the superconductivity of epitaxial HgBa2Ca2Cu3O8+y thin films fabricated by pulsed laser deposition. The highest transition temperature of 133 K for the films grown on (100) SrTiO3 was obtained after oxygen annealing at 340 °C for 12 h. The observed critical current density of 1.9×107 A/cm2 at 10 K, and 2.6×105 A/cm2 at 120 K in zero-field is high enough for the application of the superconducting quantum interference devices (SQUIDs) operated at 120 K. A dimensional crossover from 3D to 2D vortex states is observed from the temperature dependence of the irreversibility line.
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U2 - 10.1016/S0921-4534(99)00191-4
DO - 10.1016/S0921-4534(99)00191-4
M3 - Article
AN - SCOPUS:0032639791
SN - 0921-4534
VL - 315
SP - 223
EP - 226
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - 3
ER -