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Highly Concentrated Si1-xCx Alloy With an Ordered Superstructure

Highly Concentrated Si1-xCx Alloy With an Ordered Superstructure

Weiping Qin, Changfeng Wu, Guanshi Qin, Jisen Zhang, Dan Zhao

Phys Rev Lett. 2003 Jun 20;90(24):245503.

PMID: 12857201

Abstract:

An ordered Si-C alloy was observed in the products resulting from thermal reduction of molybdenum disilicide heating rods. High-resolution transmission electron microscopy measurements indicate that the Si1-xCx alloy with x approximately 25% is pure, single crystalline, and possesses a superlattice structure. The superlattice periodicity occurs along the diamond [001] direction and corresponds to the quintupling of the primary (002) periodicity. The possible growth mechanism is discussed. The Mo element is likely to play a crucial role in the growth process of the Si1-xCx alloy, since it can both reduce the energy required for breaking up C clusters and contribute to surface modification, which are of great benefit to enhance the carbon concentration and induce an ordered structure.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP12136786	Molybdenum disilicide		12136-78-6	Price

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