CONTINUOUS SERIES OF ONE-DIMENSIONAL STRUCTURES IN COMPOUNDS BASED ON M2X3 (M = SB, BI, X = SE, TE)

被引：61

作者：

FRANGIS, N ^{[1
]}

KUYPERS, S ^{[1
]}

MANOLIKAS, C ^{[1
]}

VANTENDELOO, G ^{[1
]}

VANLANDUYT, J ^{[1
]}

AMELINCKX, S ^{[1
]}

机构：

[1] ANTWERP STATE UNIV CTR,B-2020 ANTWERP,BELGIUM

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1990年 / 84卷 / 02期

关键词：

D O I：

10.1016/0022-4596(90)90330-Z

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

For compounds of the typeM2X3 (Bi2Te3, Bi2Se3, Sb2Te3), doping with Ge (Sn or Pb), as well as addition of excess cations, leads to the formation of continuous series of 1 D superstructures which can now be characterized by means of electron microscopy. The systems GeδBi2Te3 and Bi2+δ are discussed as model systems. Analysis of the electron diffraction patterns with the fractional shift method suggests the superstructures are built up of sequences of five- and seven-layer lamellae. This interpretation is confirmed by direct (high resolution) images. From a comparison between experimental high resolution images and computed images, a model for the five- and seven-layer lamellae is presented. A modified "cut and projection" method is described and applied to derive the sequences of "5" and "7" bands from the (approximate)q-values of the (quasi)commensurate diffraction patterns. © 1990 Academic Press, Inc.

引用

页码：314 / 334

页数：21

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