高温氧化物超导体临界温度与电负性和硬度关系  

The Relationship Among the Electronegativity,Hardness and Crisis Temperature of High-temperature Oxide of Superconductor

作　　者：王鸿江[1] 

机构地区：[1]重庆师范大学化学学院,重庆400047

出　　处：《重庆师范大学学报（自然科学版）》2007年第3期60-63,共4页Journal of Chongqing Normal University:Natural Science

基　　金：重庆市教委科学技术研究项目(No.040806)

摘　　要：从新的角度以喻典、陈志达、王繁等人应用密度泛函理论计算得到的元素电负性和硬度为参数,首次提出并计算了YBCO、YBSCO、BISCCO、TIBCCO和TIRESCCO等当代极其重要的超导体系高温氧化物的阴阳离子电负性之差和硬度之差,进一步研究发现这5类超导体系的高温氧化物的电负性之差和硬度之差与其对应的临界温度之间存在良好的线性关系,这无疑对寻找和制备新的超导材料和探索超导机理都具有深远的指导意义。In this article regarding the electronegativity and hardness as parameters worked out by Yudian, Chengzhida, Wangfan in the use of density functional theory. The author from a new angle first points out and calculates the M （ the electronegativity of cations minus the electronegativity of anions as M）and N（ the hardness of cations minus the hardness of anions as M ） of the 5 important high-temperature oxide of superconductor system YBCO, YBSCO, BISCCO, TIBCCO and TIRESCCO with further studies. The results show that the relationship among M, N and crisis temperature （ Tc） is found to fit in ideal line. It is clear that this result is significant to the production of new superconductor materials and exploration of the superconductor system.

关 键 词：高温超导体 临界温度 最小二乘法原理 密度泛函理论 

分 类 号：O611.62[理学—无机化学]