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Amit Mondal Piyali De Subrata Mukhopadhyay Rupendranath Banerjee Prasenjit Kar Amilan D. Jose Amitava Das 《Polyhedron》2009,28(13):2655-2660
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The Ni6Se5−xTex, 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 for x=0 towards for x?0.5. A lock-in to would formally transform the underlying parent Bmmb (ap, bp, cp) structure into a P1a1 (as=2ap, bs=bp, cs=ap+cp) superstructure phase. 相似文献
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