3 TYPES OF TERNARY SELENIDES WITH LAYERED COMPOSITE CRYSTAL-STRUCTURES FORMED IN THE PB-NB-SE SYSTEM

被引：56

作者：

OOSAWA, Y ^{[1
]}

GOTOH, Y ^{[1
]}

AKIMOTO, J ^{[1
]}

TSUNODA, T ^{[1
]}

SOHMA, M ^{[1
]}

ONODA, M ^{[1
]}

机构：

[1] NATL INST RES INORGAN MAT, TSUKUBA, IBARAKI 305, JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1992年 / 31卷 / 8A期

关键词：

TERNARY SELENIDE; LAYERED COMPOSITE CRYSTAL; LEAD SELENIDE; NIOBIUM SELENIDE; INTERCALATION; SUPERCONDUCTOR;

D O I：

10.1143/JJAP.31.L1096

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Three types of ternary selenides with layered composite crystal structures, (PbSe)1.14NbSe2[A], (PbSe)1.14(NbSe2)2[B] and (PbSe)1.14(NbSe2)3[C], have been prepared and characterized by powder X-ray diffraction, electron diffraction, intercalation and electric resistivity measurement. Results suggest that each selenide consists of PbSe layers(two-atoms-thick) and NbSe2 sandwiches(three-atoms-thick) stacked alternately with the ratios of 1:1 for A, 1:2 for B and 1:3 for C, respectively. Electric resistivity measurements suggest that B and C are superconductors whose transition temperatures are 3.4 K and 4.8 K, respectively.

引用

页码：L1096 / L1099

页数：4

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