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论文类型：期刊论文

发表时间：2010-10-28

发表刊物：PHILOSOPHICAL MAGAZINE

收录刊物：SCIE、EI、Scopus

卷号：90

期号：30

页面范围：3935-3946

ISSN号：1478-6435

关键字：quasicrystals; Al-transition metal alloys; cluster-plus-glue-atom model; cluster formula; electron concentration

摘要：Compositions of Al-transition metal (TM) binary quasicrystals are revisited using the cluster-plus-glue-atom model. These compositions all conform to a unified cluster formula [icosahedron](glue)1, where the icosahedron is taken from a crystalline approximant. In a given binary system, icosahedral and decagonal quasicrystals are expressed by the same icosahedron but glued, respectively, by one Al and one TM, and their e/a ratios fall close to 1.86 and 1.71-1.79, respectively. Their relative stabilities are discussed by referring to compositions satisfying the fully filled TM-3d states according to Haussler's resonance model.