HIGH-PRESSURE SYNTHESIS OF SUPERCONDUCTING LA2-XCA1+XCU2O6-X/2+DELTA

被引：48

作者：

KINOSHITA, K

SHIBATA, H

YAMADA, T

机构：

[1] NTT Basic Research Laboratories, Musashino-shi, Tokyo, 180, Midori-cho

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1990年 / 171卷 / 5-6期

关键词：

D O I：

10.1016/0921-4534(90)90267-I

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Superconductivity has been detected in a Ca-based 2-1-2-6 compound not doped with Sr, La2-xCa1+xCu2O 6-x 2+δ(0≤x≤1.2), which was synthesized under high O2 pressure. The single-phase region is shifted toward larger x by increasing the O2 pressure during synthesis, and 0.09≤x≤0.25 is obtained at 400 atm. La1.75Ca1.25Cu2O6.01 has a Tc(zero) of 44.7 K and a Meissner volume fraction of about 12% when sintered at 1080°C under 400 atm O2. © 1990.

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页码：523 / 527

页数：5

相关论文

共 9 条

[1] SUPERCONDUCTIVITY AT 60-K IN LA2-XSRXCACU2O6 - THE SIMPLEST DOUBLE-LAYER CUPRATE [J].

CAVA, RJ ;

BATLOGG, B ;

VANDOVER, RB ;

KRAJEWSKI, JJ ;

WASZCZAK, JV ;

FLEMING, RM ;

PECK, WF ;

RUPP, LW ;

MARSH, P ;

JAMES, ACWP ;

SCHNEEMEYER, LF .

NATURE, 1990, 345 (6276) :602-604

[2] NON-SUPERCONDUCTIVITY OF LA1.6(SR,CA)1.4CU2OY [J].

HIRATANI, M ;

SOWA, T ;

TAKEDA, Y ;

MIYAUCHI, K .

SOLID STATE COMMUNICATIONS, 1989, 72 (06) :541-545

[3] PREPARATION AND SUPERCONDUCTING PROPERTIES OF LA2-X(CA1-YSRY)1+XCU2O6-X/2+DELTA [J].

KINOSHITA, K ;

SHIBATA, H ;

YAMADA, T .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1990, 29 (09) :L1632-L1634

[4]

KINOSHITA K, UNPUB PHYSICA C

[5] INTERGROWTHS OF OXYGEN DEFECT PEROVSKITE LAYERS AND SRO LAYERS - ELECTRON-TRANSPORT PROPERTIES OF THE OXIDES - LA2-XA1+XCU2O6-X/2+DELTA (A=CA,SR) [J].

NGUYEN, N ;

MICHEL, C ;

STUDER, F ;

RAVEAU, B .

MATERIALS CHEMISTRY, 1982, 7 (03) :413-427

[6] INTERGROWTH OF DEFECT PEROVSKITE LAYERS AND SODIUM-CHLORIDE TYPE LAYERS - OXIDES [J].

NGUYEN, N ;

ERRAKHO, L ;

MICHEL, C ;

CHOISNET, J ;

RAVEAU, B .

MATERIALS RESEARCH BULLETIN, 1980, 15 (07) :891-897

[7] TRANSPORT-PROPERTIES OF NON-SUPERCONDUCTING LA-CUPRATES [J].

TAMEGAI, T ;

IYE, Y .

PHYSICA C, 1989, 159 (03) :181-187

[8]

Torrance J. B., 1987, Chemtronics, V2, P120

[9] METALLIC, BUT NOT SUPERCONDUCTING, LA-BA (AND LA-SR) COPPER OXIDES [J].

TORRANCE, JB ;

TOKURA, Y ;

NAZZAL, A ;

PARKIN, SSP .

PHYSICAL REVIEW LETTERS, 1988, 60 (06) :542-545