镍基铋化物GdONiBi和空穴掺杂的Gd_(0.9)Sr_(0.1)ONiBi的超导电性(英文)  

Superconductivity in nickel-based bismuthide GdONiBi and holedoped Gd_(0.9)Sr_(0.1)ONiBi

作　　者：葛军饴[1] 秦晓玲[1] 曹世勋[1] 袁淑娟[1,2] 张金仓[1] 

机构地区：[1]上海大学物理系,上海200444 [2]南京大学固体微结构实验室,南京210093

出　　处：《山东大学学报（工学版）》2009年第1期106-109,共4页Journal of Shandong University（Engineering Science）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos .10674092,10504019,10774097);the Science and Technology Innovation Fund of the Shanghai Education Committee (No.09ZZ95);the Science & Technology Committee of Shanghai Mu-nicipality (No.08dj1400202)

摘　　要：制备了镍基化合物GdONiBi,并且得到其超导转变温度为4.5K.通过用Sr元素部分的替代Gd元素向该物质中引入空穴,得到了一种新的超导体Gd0.9Ni0.1其转变温度为4.7K.两种镍基化合物超导体正常金属态的电阻率均显示出金属行为.通过对其磁电阻效应的研究发现其磁电阻效应显示出与铁基超导体不同的行为,表明两者之间的超导机制可能存在差异.The nickel-based compound GdONiBi was successfully synthesized with superconducting transition temperature about 4.5 K. By partially substituting the element Gd with Sr to introduce holes into the material,a new superconductor Gd0.9Sr0.1ONiBi was obtained with critical temperature about 4.7 K. The normal state resistivity in nickel-based samples shows a metallic behavior. The magnetoresistance measurements show a different behavior compared to those in iron-based compounds which may indicate that the mechan...

关 键 词：镍基铋化物 空穴掺杂 磁电阻 多带效应 

分 类 号：O611.3[理学—无机化学]