CRYSTAL-GROWTH AND CHARACTERIZATION OF PR2-XCEXCUO4

被引：28

作者：

MATSUDA, M ^{[1
]}

ENDOH, Y ^{[1
]}

HIDAKA, Y ^{[1
]}

机构：

[1] NIPPON TELEGRAPH & TEL PUBL CORP, APPL ELECTR LABS, TOKAI, IBARAKI 31911, JAPAN

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1991年 / 179卷 / 4-6期

关键词：

D O I：

10.1016/0921-4534(91)92180-J

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single crystals of Pr2-xCexCuO4 were grown using the CuO flux method. Large crystals in which the Ce distribution was homogeneous were grown over a wide range of Ce concentrations. Typical Pr2CuO4 and Pr1.86Ce0.14CuO4 single crystals are of 50 empty set x 3 mm3 and 10 x 10 x 0.1 mm3, respectively. A small but high quality reduced Pr1.84Ce0.16CuO4 crystals show superconductivity with a T(c) of 18 K and a transition width of 1.5 K. We have examined the effects of Pt contamination from the Pt crucible. Only a 1% substitution of Pt for Cu eliminates the superconductivity entirely. Pt suppresses T(c) more quickly in the Pr2-xCexCuO4 system than in the La2-xSrxCuO4 system, where a Pt substitution of 2% eliminates the superconductivity.

引用

页码：347 / 352

页数：6

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