STABILIZATION OF MERCURY CUPRATES BY BISMUTH - THE SUPERCONDUCTORS HG1-XBIXBA2CAM-1CUMO2M+2+DELTA

被引：43

作者：

MICHEL, C ^{[1
]}

HERVIEU, M ^{[1
]}

MAIGNAN, A ^{[1
]}

PELLOQUIN, D ^{[1
]}

BADRI, V ^{[1
]}

RAVEAU, B ^{[1
]}

机构：

[1] ISMRA UNIV,CRISMAT LAB,BD MARECHAL JUIN 14050,CAEN,FRANCE

来源：

PHYSICA C | 1995年 / 241卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(94)02365-4

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The synthesis of the ''Ba-Hg'' based cuprates at normal pressures is a difficult problem especially for the 1223 phase that reaches a T(c) of 133 K. In order to stabilize these oxides, the substitution of bismuth for mercury has been studied. A series of superconductors Hg1-xBixBa2Cam-1CumO2m+2+delta has been synthesized at normal pressures with m = 1, 3, and 2.5 and with x ranging from 0.1 to 0.2. These oxides, that display the ''1201'', ''1223'', and intergrowth ''1212-1223'' structures, exhibit for the first one a maximum T(c onset) of 84 K and for the two others a T(c onset) of 130 K. Attempts to prepare the 1212 phase (n = 2) were unsuccessful, but this phase could be stabilized by doping with yttrium, leading to the superconductor Hg0.8Bi0.2Ba2Ca0.8Y0.2Cu2O6+delta that exhibits a broad transition below 128 K.

引用

页码：1 / 9

页数：9

共 21 条

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[2] THE SYNTHESIS AND CHARACTERIZATION OF THE HGBA2CA2CU3O8+DELTA-PHASE AND HGBA2CA3CU4O10+DELTA-PHASE [J].

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PHYSICA C, 1993, 215 (1-2) :1-10

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[5] NEW 1212-TYPE SUPERCONDUCTORS WITH A T(C) UP TO 85-K IN THE SYSTEM HG-PR-SR-CA-CU-O [J].

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[6] SUPERCONDUCTIVITY UP TO 90-K IN A NEW FAMILY OF THE (PB,HG)SR2(CA,Y)CU2O7 SYSTEM [J].

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[7] SUPERCONDUCTIVITY ABOVE 130 K IN THE HG-PB-BA-CA-CU-O SYSTEM [J].

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[8] INCREASE OF T(C) IN HGBA2CUOY BY REDUCING TREATMENT [J].

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PHYSICA C, 1993, 212 (1-2) :239-244

[10] SUPERCONDUCTIVITY UP TO 110-K IN THE 1212-HG BASED CUPRATE ND1-XCAXBA2HG1-X'CU2+X'O6+Y [J].

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PHYSICA C, 1993, 216 (1-2) :1-5

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