SUPERCONDUCTIVITY AT 112-117-K IN HGBA2CACU2O6+DELTA

被引：71

作者：

MENG, RL ^{[1
]}

SUN, YY ^{[1
]}

KULIK, J ^{[1
]}

HUANG, ZJ ^{[1
]}

CHEN, F ^{[1
]}

XUE, YY ^{[1
]}

CHU, CW ^{[1
]}

机构：

[1] UNIV HOUSTON,DEPT PHYS,HOUSTON,TX 77204

来源：

PHYSICA C | 1993年 / 214卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0921-4534(93)90831-A

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The superconducting phase HgBa2CaCu2O6+delta With a sharp transition has been prepared and studied. Through studies of X-ray diffraction patterns, transmission electron microscopy, magnetization, and resistivity, we found that it has a tetragonal symmetry with lattice parameters a = 3.862 (1) angstrom and c= 12.707 (5) angstrom, with a main superconducting transition at approximately 112 K prior to oxygenation and approximately 117 K after prolonged oxygenation, and has a rather low irreversibility line. No superstructures of the type previously reported by Schilling et al. and Gao et al. in the > 130 K phase were detected in these samples.

引用

页码：307 / 312

页数：6

共 8 条

[1] CHU CW, 1992, IN PRESS P CN YANG 7
[2] GAO L, UNPUB PHYSICA C
[3] HUANG Z, IN PRESS
[4] MENG RL, IN PRESS
[5] NOVIKOV DL, UNPUB PHYSICA C
[6] SUPERCONDUCTIVITY AT 94-K IN HGBA2CUO4+DELTA
PUTILIN, SN
ANTIPOV, EV
CHMAISSEM, O
MAREZIO, M
[J]. NATURE, 1993, 362 (6417) : 226 - 228
[7] NEW COMPLEX COPPER OXIDES - HGBA2RCU2O7 (R = LA, ND, EU, GD, DY, Y)
PUTILIN, SN
BRYNTSE, I
ANTIPOV, EV
[J]. MATERIALS RESEARCH BULLETIN, 1991, 26 (12) : 1299 - 1307
[8] SUPERCONDUCTIVITY ABOVE 130-K IN THE HG-BA-CA-CU-O SYSTEM
SCHILLING, A
CANTONI, M
GUO, JD
OTT, HR
[J]. NATURE, 1993, 363 (6424) : 56 - 58

← 1 →