A MERCURY-BASED SUPERCONDUCTING CUPRATE, INTERGROWTH OF THE 2201 AND 1201 STRUCTURES TL2HGBA4CU2O10+Y

被引：21

作者：

MARTIN, C

HUVE, M

VANTENDELOO, G

MAIGNAN, A

MICHEL, C

HERVIEU, M

RAVEAU, B

机构：

[1] Laboratoire CRISMAT, ISMRA/Université de Caen, 14050 Caen Cedex, Boulevard du Maréchal Juin

来源：

PHYSICA C | 1993年 / 212卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(93)90590-M

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A new superconductor Tl2HgBa4Cu2O10+y has been prepared. It crystallizes in the space group 14/mmm with a=3.8584(1) angstrom; c=42.2031(9) angstrom. Electron diffraction and high-resolution microscopy investigations have allowed a structural model to be established: the structure of this phase consists of the intergrowth of 2201-layers, [Tl2Ba2CuO6]infinity, with 1201 layers, [HgBa2CuO4+y]infinity. Susceptibility measurements show that the as-synthesized cuprate under oxygen pressure does not superconduct, but that, by annealing the sample at very low temperature in an argon-hydrogen flow, superconductivity with a T(conset) up to 50 K and a volume fraction of 17% at 4.2 K is induced.

引用

页码：274 / 278

页数：5

共 13 条

[1] 100-K SUPERCONDUCTING PHASES IN THE TL-CA-BA-CU-O SYSTEM [J].

HAZEN, RM ;

FINGER, LW ;

ANGEL, RJ ;

PREWITT, CT ;

ROSS, NL ;

HADIDIACOS, CG ;

HEANEY, PJ ;

VEBLEN, DR ;

SHENG, ZZ ;

ELALI, A ;

HERMANN, AM .

PHYSICAL REVIEW LETTERS, 1988, 60 (16) :1657-1660

[2]

KIM JS, 1989, J LESS-COMMON MET, V156, P349

[3] LARGE TC-VARIATION FROM 0K TO 80K AND HOLE CONCENTRATION IN TL2BA2CUO6 [J].

KUBO, Y ;

SHIMAKAWA, Y ;

MANAKO, T ;

SATOH, T ;

IIJIMA, S ;

ICHIHASHI, T ;

IGARASHI, H .

PHYSICA C, 1989, 162 :991-992

[4] THE 2201 THALLIUM CUPRATE - TCS UP TO 92-K CAN BE ACHIEVED BY HYDROGEN ANNEALING [J].

MAIGNAN, A ;

MARTIN, C ;

HUVE, M ;

PROVOST, J ;

HERVIEU, M ;

MICHEL, C ;

RAVEAU, B .

PHYSICA C, 1990, 170 (3-4) :350-360

[5]

MARTIN C, 1988, CR ACAD SCI II, V307, P27

[6] THALLIUM CUPRATES - THE CRITICAL-TEMPERATURE IS MAINLY GOVERNED BY THE OXYGEN NONSTOICHIOMETRY [J].

MARTIN, C ;

MAIGNAN, A ;

PROVOST, J ;

MICHEL, C ;

HERVIEU, M ;

TOURNIER, R ;

RAVEAU, B .

PHYSICA C, 1990, 168 (1-2) :8-22

[7] SUPERCONDUCTING TL2.0BA2.0CUO6+DELTA - A HIGH-RESOLUTION NEUTRON POWDER AND SINGLE-CRYSTAL X-RAY-DIFFRACTION INVESTIGATION [J].

PARISE, JB ;

TORARDI, CC ;

SUBRAMANIAN, MA ;

GOPALAKRISHNAN, J ;

SLEIGHT, AW ;

PRINCE, E .

PHYSICA C, 1989, 159 (03) :239-244

[8] SUPERCONDUCTIVITY AT 94-K IN HGBA2CUO4+DELTA [J].

PUTILIN, SN ;

ANTIPOV, EV ;

CHMAISSEM, O ;

MAREZIO, M .

NATURE, 1993, 362 (6417) :226-228

[9] THE NATURE AND THE ROLE OF ROCK SALT-TYPE LAYERS IN SUPERCONDUCTIVE LAYERED COPPER OXIDES [J].

RAVEAU, B ;

MICHEL, C ;

PROVOST, J ;

HERVIEU, M .

SOLID STATE IONICS, 1990, 40-1 (pt 2) :785-789

[10]

SCHILLING A, 1993, UNPUB NATURE 0415

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