EFFECT OF AG2O ADDITION ON THE FORMATION OF Y1BA2CU4O8 .1. THE SYNTHESIS COMBINED WITH O2 HIP TECHNIQUE

被引：4

作者：

WATANABE, Y ^{[1
]}

YANAGIDA, K ^{[1
]}

TAKATA, M ^{[1
]}

ISHIZAKI, K ^{[1
]}

机构：

[1] NAGAOKA UNIV TECHNOL,DEPT MECH ENGN,NAGAOKA,NIIGATA 94021,JAPAN

来源：

PHYSICA C | 1991年 / 190卷 / 1-2期

关键词：

D O I：

10.1016/S0921-4534(05)80206-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of Ag2O addition on the formation of Y1Ba2Cu4O8 (124) under high pressure was examined in terms of reaction rate enhancement. By adding a few wt.% Ag2O, the calcined material composed of Y1Ba2Cu3O7-delta and CuO was found to be easily converted to 124 after HIPping at 920-degrees-C for only 3 h in a mixed Ar + O2 gas of 900 atm (p(O2) = 180 atm). T(c)(onset) and T(c)(zero) for the 124 sample were independent of Ag2O content, being 80 and 75 K, respectively.

引用

页码：84 / 86

页数：3

共 7 条

[1] HIGH-PRESSURE PREPARATION AND NEUTRON-DIFFRACTION STUDY OF THE HIGH-TC SUPERCONDUCTOR YBA2CU4O8+/-X [J].

FISCHER, P ;

KARPINSKI, J ;

KALDIS, E ;

JILEK, E ;

RUSIECKI, S .

SOLID STATE COMMUNICATIONS, 1989, 69 (05) :531-533

[2] PHASE-DIAGRAMS OF YBA2CU4O8 AND YBA2CU3.5O7.5 IN THE PRESSURE RANGE 1 BAR LESS-THAN-OR-EQUAL-TO PO2 LESS-THAN-OR-EQUAL-TO 3000 BAR [J].

KARPINSKI, J ;

RUSIECKI, S ;

KALDIS, E ;

BUCHER, B ;

JILEK, E .

PHYSICA C, 1989, 160 (5-6) :449-457

[3] BULK SYNTHESIS OF THE 81-K SUPERCONDUCTOR YBA2CU4O8 AT HIGH OXYGEN-PRESSURE [J].

KARPINSKI, J ;

KALDIS, E ;

JILEK, E ;

RUSIECKI, S ;

BUCHER, B .

NATURE, 1988, 336 (6200) :660-662

[4] TC INCREASED TO 90-K IN YBA2CU4O8 BY CA DOPING [J].

MIYATAKE, T ;

GOTOH, S ;

KOSHIZUKA, N ;

TANAKA, S .

NATURE, 1989, 341 (6237) :41-42

[5] STABILITY OF 124-SUPERCONDUCTOR, 123-SUPERCONDUCTOR, AND 247-SUPERCONDUCTOR [J].

MORRIS, DE ;

ASMAR, NG ;

NICKEL, JH ;

SID, RL ;

WEI, JYT ;

POST, JE .

PHYSICA C, 1989, 159 (03) :287-294

[6] EFFECT OF AG2O ADDITION ON THE FORMATION OF Y1BA2CU4O8 .2. THE SYNTHESIS AT AN ORDINARY PRESSURE OF OXYGEN [J].

OHARA, S ;

MATSUDA, M ;

WATANABE, Y ;

TAKATA, M .

PHYSICA C, 1991, 190 (1-2) :87-88

[7] STABILITY OF YBA2CU3O7, Y2BA4CU7O15 AND YBA2CU4O8 SPUERCONDUCTORS UNDER VARYING OXYGEN PARTIAL-PRESSURE, TOTAL GAS-PRESSURE AND TEMPERATURE [J].

SAWAI, Y ;

ISHIZAKI, K ;

TAKATA, M ;

NARUKAWA, Y .

PHYSICA C, 1991, 176 (1-3) :147-150

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