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近年来,由过渡金属与非金属元素组成的二元原子团簇的研究引起了人们极大的兴趣,因为此类化合物如过渡金属碳化物具有高熔点、强硬度以及良好的金属导电性等特点,以及过渡金属硫化物具有超导体、半导体、润滑剂、催化剂、生物固氮(或其它电子传递过程)等多方面的特性。然而这些工作应用激光蒸发和质谱的方法来研究则不多,目前见诸报道的有钽的碳化物和镍的硫化物。本工作应用激光蒸发和质谱分析的方法,首次报道了Ta_nS_m~+原
In recent years, the study of binary atomic clusters composed of transition metals and non-metallic elements has drawn great interest because such compounds as transition metal carbides have such characteristics as high melting point, high hardness and good metallic conductivity, And transition metal sulfides have many properties such as superconductors, semiconductors, lubricants, catalysts, biological nitrogen fixation (or other electron transport processes) and the like. However, few studies have been conducted using laser evaporation and mass spectrometry. The tantalum carbides and nickel sulfides reported to date have been reported. The work of the application of laser evaporation and mass spectrometry methods, for the first time reported Ta_nS_m ~ + original