STABILIZATION OF SUPERCONDUCTING LNPT2B2C BY PARTIAL SUBSTITUTION OF GOLD FOR PLATINUM

被引：23

作者：

CAVA, RJ ^{[1
]}

BATLOGG, B ^{[1
]}

KRAJEWSKI, JJ ^{[1
]}

PECK, WF ^{[1
]}

SIEGRIST, T ^{[1
]}

FLEMING, RM ^{[1
]}

CARTER, S ^{[1
]}

TAKAGI, H ^{[1
]}

FELDER, RJ ^{[1
]}

VANDOVER, RB ^{[1
]}

RUPP, LW ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT APPL PHYS,TOKYO 113,JAPAN

来源：

PHYSICA C | 1994年 / 226卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(94)90493-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The quaternary intermetallic compounds LnPt2B2C (Ln = La, Pr and Y) were recently shown to be superconducting at temperatures up to 10.5 K. Annealing conditions were not found, however, which yielded single-phase material. Here it is reported that the partial substitution of Au for Pt in LnPt2B2C yields essentially single-phase polycrystalline material under annealing conditions readily accessible by conventional techniques. This is accomplished through arcmelting LnPt1.5Au0.6B2C, a composition slightly superstoichiometric in transition metal, and annealing at 1100-degrees-C in Ta foil: a small amount of melt phase formed in the anneal is wicked away from the sample leaving good-quality material behind.

引用

页码：170 / 174

页数：5

共 6 条

[1] SUPERCONDUCTIVITY AT 23-K IN YTTRIUM PALLADIUM BORIDE CARBIDE [J].

CAVA, RJ ;

TAKAGI, H ;

BATLOGG, B ;

ZANDBERGEN, HW ;

KRAJEWSKI, JJ ;

PECK, WF ;

VANDOVER, RB ;

FELDER, RJ ;

SIEGRIST, T ;

MIZUHASHI, K ;

LEE, JO ;

EISAKI, H ;

CARTER, SA ;

UCHIDA, S .

NATURE, 1994, 367 (6459) :146-148

[2] SUPERCONDUCTIVITY IN THE QUATERNARY INTERMETALLIC COMPOUNDS LNNI2B2C [J].

CAVA, RJ ;

TAKAGI, H ;

ZANDBERGEN, HW ;

KRAJEWSKI, JJ ;

PECK, WF ;

SIEGRIST, T ;

BATLOGG, B ;

VANDOVER, RB ;

FELDER, RJ ;

MIZUHASHI, K ;

LEE, JO ;

EISAKI, H ;

UCHIDA, S .

NATURE, 1994, 367 (6460) :252-253

[3]

CAVA RJ, UNPUB PHYS REV B

[4]

MATTHEISS LF, UNPUB

[5] BULK SUPERCONDUCTIVITY AT AN ELEVATED-TEMPERATURE (T(C)APPROXIMATE-TO-12-K) IN A NICKEL-CONTAINING ALLOY SYSTEM Y-NI-B-C [J].

NAGARAJAN, R ;

MAZUMDAR, C ;

HOSSAIN, Z ;

DHAR, SK ;

GOPALAKRISHNAN, KV ;

GUPTA, LC ;

GODART, C ;

PADALIA, BD ;

VIJAYARAGHAVAN, R .

PHYSICAL REVIEW LETTERS, 1994, 72 (02) :274-277

[6] THE CRYSTAL-STRUCTURE OF SUPERCONDUCTING LUNI2B2C AND THE RELATED PHASE LUNIBC [J].

SIEGRIST, T ;

ZANDBERGEN, HW ;

CAVA, RJ ;

KRAJEWSKI, JJ ;

PECK, WF .

NATURE, 1994, 367 (6460) :254-256

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