%0 Journal Article
%T Superconductivity and negative temperature coefficient of the resistivity of bulk metallic glass Zr46.75Ti8.25Cu7.5Ni10Be27.5<br>块体金属玻璃Zr46.75Ti8.25Cu7.5Ni10Be27.5的超导与负电阻温度系数
%A Li Yong
%A Wen Ping
%A Liu Zhen-Xing
%A Jing Xiu-Nian
%A Wang Wan-Lu
%A Bai Hai-Yang
%A <br>李　勇
%A 闻　平
%A 刘振兴
%A 景秀年
%A 王万录
%A 白海洋
%J 物理学报
%D 2004
%I 
%X Electrical-resistivity measurements between 1.5 K and 300 K were performed on the Zr46.75Ti8.25Cu7.5Ni10Be27.5 bulk metallic glasses (BMGs) before and after annealing. Results of the superconducting transition temperature measurements are presented for the BMG Zr46.75Ti8.25Cu7.5Ni10Be27.5. The superconducting critical temperature Tc is 1.84K for the as-prepared metallic glassy sample and 3.76K for the annealed sample at zero magnetic fields. The as-prepared metallic glassy sample exhibits negative temperature coefficient of the resistivity in the temperature range from 5 to 300 K. The negative temperature coefficient of the resistivity of the as-prepared metallic glassy sample can be reasonably understood with the extended Faber-Ziman theory in terms of the diffraction model for metallic glasses if it is assumed that Zr, Ti, Cu, Ni and Be contribute 1.5, 1.5, 0.5, 0.5 and 2 conduction electrons, respectively. The R(T) of the BMG Zr46.75Ti8.25Cu7.5Ni10Be27.5 over the temperature range from 5 to 300 K was analyzed by fitting it to a polynomial using a least-squares procedure.
%K bulk metallic glasses
%K superconductivity
%K temperature coefficient of the resistivity<br>块体金属玻璃，超导，电阻温度系数
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=BF09B725B244B485&yid=D0E58B75BFD8E51C&vid=8E6AB9C3EBAAE921&iid=38B194292C032A66&sid=693E1FFD7BD946DF&eid=8AD9BBE1FAF6BB78&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=25