Oxygen annealing and superconductivity of HgBa2Ca2Cu3O8+y thin films

被引：8
|
作者：
Kang, WN [1 ]
Lee, SI
Chu, CW
机构：
[1] Pohang Univ Sci & Technol, Dept Phys, Natl Creat Res Initiat Ctr Superconduct, Pohang 790784, Kyungbuk, South Korea
[2] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA
来源：
PHYSICA C | 1999年 / 315卷 / 3-4期
关键词：
HgBa2Ca2Cu3O8 thin films; high-T-c superconductors; critical current density; dimensional crossover;
D O I：
10.1016/S0921-4534(99)00191-4
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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 degrees C for 12 h. The observed critical current density of 1.9 x 10(7) A/cm(2) at 10 K, and 2.6 x 10(5) A/cm(2) 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. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：223 / 226
页数：4
相关论文
共 50 条
  • [1] Surface versus bulk pinning in a HgBa2Ca2Cu3O8+x ceramics
    Reissner, M
    PHYSICA C, 1997, 290 (3-4): : 173 - 187
  • [2] Enhancement of critical current density in HgBa2Ca2Cu3O8+δ superconductor doped by Sb
    Li, JQ
    Lam, CC
    Hung, KC
    Shen, LJ
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1998, 304 (1-2): : 133 - 145
  • [3] Effect of overdoping on the irreversibility field and critical current density of the HgBa2Ca2Cu3O8+δ superconductor
    Fujinami, K
    Suematsu, H
    Karppinen, M
    Yamauchi, H
    PHYSICA C, 1998, 307 (3-4): : 202 - 208
  • [4] Thermally activated energies of YBa2Cu3O7-δ and Y0.8Ca0.2Ba2Cu3O7-δ thin films
    Zhang, Y. Z.
    Wen, H. H.
    Wang, Z.
    PHYSICAL REVIEW B, 2006, 74 (14):
  • [5] Impact of oxygen diffusion on superconductivity in YBa2Cu3O7-δ thin films studied by positron annihilation spectroscopy
    Reiner, M.
    Gigl, T.
    Jany, R.
    Hammerl, G.
    Hugenschmidt, C.
    PHYSICAL REVIEW B, 2018, 97 (14)
  • [6] Raman spectra of Y(Pr)Ba2Cu3O6+delta thin films and oxygen disorder
    Faulques, E
    Gonzalez, C
    SPECTROSCOPIC STUDIES OF SUPERCONDUCTORS, PTS A AND B: PT A - INFRARED AND RAMAN SPECTRA; PT B - TUNNELING, PHOTOELECTRON, AND OTHER SPECTRA, 1996, 2696 : 264 - 275
  • [7] Magnetic field and temperature dependence of the intergranular activation energy in a polycrystalline HgBa2Ca2Cu3O8+delta superconductor
    Kim, GC
    Kim, YC
    PHYSICA C, 1997, 279 (1-2): : 122 - 126
  • [8] DEGRADATION OF THIN-FILMS OF YBA2CU3O7 BY ANNEALING IN AIR AND IN VACUUM
    MOGROCAMPERO, A
    PAIK, KW
    TURNER, LG
    JOURNAL OF SUPERCONDUCTIVITY, 1995, 8 (01): : 95 - 98
  • [9] Preparation and properties of Y1-xHoxBa2Cu3O7-δ thin films by TFA-MOD method
    Jian, Hongbin
    Li, Qi
    Shi, Dongqi
    Zhang, Li
    Yang, Zhaorong
    Dou, Shixue
    Zhu, Xuebin
    Sun, Yuping
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2011, 471 (23-24): : 1669 - 1674
  • [10] The Energy Gap in the (Hg1-xSnx)Ba2Ca2Cu3O8+y Superconductor
    Szczesniak, R.
    Durajski, A. P.
    JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2014, 27 (06) : 1363 - 1367
12345