117-K SUPERCONDUCTIVITY IN THE BA-CA-CU-O SYSTEM

被引：111
作者：
JIN, CQ [1 ]
ADACHI, S [1 ]
WU, XJ [1 ]
YAMAUCHI, H [1 ]
TANAKA, S [1 ]
机构：
[1] INT SUPERCONDUCT TECHNOL CTR,SUPERCONDUCT RES LAB,10-13 SHINONOME 1-CHOME,KOTO KU,TOKYO 135,JAPAN
来源：
PHYSICA C | 1994年 / 223卷 / 3-4期
关键词：
D O I：
10.1016/0921-4534(94)91267-X
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Superconductivity was observed at 117 K in the Ba-Ca-Cu-O samples synthesized at 950-degrees-C under 5.0 GPa for 1 h. The samples were multiphase. Electrical resistivity and DC magnetic susceptibility measurements revealed bulk superconductivity at T(conset) = 117 K, T(czero) = 107.6 K and T(cmag) = 116.O K. Crystals having primitive tetragonal unit cells with the lattice parameters of a = 3.88 angstrom, and c= 15.0 angstrom, 18.3 angstrom and 21.6 angstrom were found by electron diffraction. The dominant peaks of the X-ray powder diffraction pattern were tentatively assigned to the hypothetical Cu-1234 (a = 3.85 angstrom and c = 18.30 angstrom) and Cu-1223 (a = 3.88 angstrom and c = 14.94 angstrom) structures. It is likely that these are new high-T(c) superconducting phases.
引用
收藏
页码：238 / 242
页数：5
相关论文
共 10 条
  • [1] HIGH-PRESSURE SYNTHESIS OF SUPERCONDUCTING SR-CA-CU-O SAMPLES
    ADACHI, S
    YAMAUCHI, H
    TANAKA, S
    MORI, N
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1993, 208 (3-4): : 226 - 230
  • [2] NEW SUPERCONDUCTING CUPRATES IN THE SR-CA-CU-O SYSTEM
    ADACHI, S
    YAMAUCHI, H
    TANAKA, S
    MORI, N
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1993, 212 (1-2): : 164 - 168
  • [3] THE SYNTHESIS AND CHARACTERIZATION OF THE HGBA2CA2CU3O8+DELTA-PHASE AND HGBA2CA3CU4O10+DELTA-PHASE
    ANTIPOV, EV
    LOUREIRO, SM
    CHAILLOUT, C
    CAPPONI, JJ
    BORDET, P
    THOLENCE, JL
    PUTILIN, SN
    MAREZIO, M
    [J]. PHYSICA C, 1993, 215 (1-2): : 1 - 10
  • [4] SUPERCONDUCTIVITY AT 110-K IN THE INFINITE-LAYER COMPOUND (SR1-XCAX)1-YCUO2
    AZUMA, M
    HIROI, Z
    TAKANO, M
    BANDO, Y
    TAKEDA, Y
    [J]. NATURE, 1992, 356 (6372) : 775 - 776
  • [5] A NEW FAMILY OF COPPER-OXIDE SUPERCONDUCTORS SRN+1CUNO2N+1+DELTA STABILIZED AT HIGH-PRESSURE
    HIROI, Z
    TAKANO, M
    AZUMA, M
    TAKEDA, Y
    [J]. NATURE, 1993, 364 (6435) : 315 - 317
  • [6] THE HIGH-TEMPERATURE EU2O3-BACO3-CUO-ATMOSPHERIC OXYGEN PHASE-DIAGRAM - PHASE CHARACTERIZATION IN THE 90-K SUPERCONDUCTING REGION
    HODOROWICZ, SA
    LASOCHA, A
    LASOCHA, W
    EICK, HA
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 1988, 75 (02) : 270 - 278
  • [7] A NEW HIGH-TC TLBA2CA3CU4O11 SUPERCONDUCTOR WITH TC-GREATER-THAN-120-K
    IHARA, H
    SUGISE, R
    HIRABAYASHI, M
    TERADA, N
    JO, M
    HAYASHI, K
    NEGISHI, A
    TOKUMOTO, M
    KIMURA, Y
    SHIMOMURA, T
    [J]. NATURE, 1988, 334 (6182) : 510 - 511
  • [8] SYNTHESIS OF SUPERCONDUCTING SR2CUO3+DELTA USING HIGH-PRESSURE TECHNIQUES
    LAFFEZ, P
    WU, XJ
    ADACHI, S
    YAMAUCHI, H
    MORI, N
    [J]. PHYSICA C, 1994, 222 (3-4): : 303 - 309
  • [9] SUPERCONDUCTIVITY IN THE BA-SR-CU-O SYSTEM
    TAKANO, M
    AZUMA, M
    HIROI, Z
    BANDO, Y
    TAKEDA, Y
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1991, 176 (4-6): : 441 - 444
  • [10] WONGNG W, 1987, POWDER DIFFR, V2, P258
1