A TEM study of Ni ordering in the Ni6Se5-xTe x, 0<x<∼1.7, system

Ray L. Withers; Yun Liu; Lasse Norén; John D. Fitz Gerald

doi:10.1016/j.jssc.2003.09.042

A TEM study of Ni ordering in the Ni₆Se_5-xTe _x, 0<x<∼1.7, system

Ray L. Withers^*, Yun Liu, Lasse Norén, John D. Fitz Gerald

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The Ni₆Se_5-xTe_x, 0<x<∼1.7, system has been carefully investigated via electron diffraction and TEM imaging. They reveal a somewhat disordered modulated superstructure phase arising from Ni ion ordering within an essentially well-defined chalcogen sub-structure. As x, and the underlying parent substructure cell dimensions increase, the incommensurate primary modulation wave-vector q characteristic of this Ni ion ordering quickly swings from close to 12a* for x=0 towards 12[101]* for x≥0.5. A lock-in to 12[101]* would formally transform the underlying parent Bmmb (a_p, b_p, c_p) structure into a P1a1 (a_s=2a_p, b_s=b_p, c _s=-12a_p+12c_p) superstructure phase.

Original language	English
Pages (from-to)	972-978
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	177
Issue number	3
DOIs	https://doi.org/10.1016/j.jssc.2003.09.042
Publication status	Published - Mar 2004

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@article{fc7dbe071164446fa1c5899ba0fcc66d,

title = "A TEM study of Ni ordering in the Ni6Se5-xTe x, 0<x<∼1.7, system",

abstract = "The Ni6Se5-xTex, 0p, bp, cp) structure into a P1a1 (as=2ap, bs=bp, c s=-12ap+12cp) superstructure phase.",

author = "Withers, {Ray L.} and Yun Liu and Lasse Nor{\'e}n and {Fitz Gerald}, {John D.}",

year = "2004",

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AU - Withers, Ray L.

AU - Liu, Yun

AU - Norén, Lasse

AU - Fitz Gerald, John D.

PY - 2004/3

Y1 - 2004/3

N2 - The Ni6Se5-xTex, 0p, bp, cp) structure into a P1a1 (as=2ap, bs=bp, c s=-12ap+12cp) superstructure phase.

AB - The Ni6Se5-xTex, 0p, bp, cp) structure into a P1a1 (as=2ap, bs=bp, c s=-12ap+12cp) superstructure phase.

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U2 - 10.1016/j.jssc.2003.09.042

DO - 10.1016/j.jssc.2003.09.042

M3 - Article

SN - 0022-4596

VL - 177

SP - 972

EP - 978

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 3

ER -

A TEM study of Ni ordering in the Ni₆Se_5-xTe _x, 0<x<∼1.7, system

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