| 超导体MgB2成相过程研究 |
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| 引用本文： | 郭永庆,冯旺军,李翠环,陈映杉.超导体MgB2成相过程研究[J].低温与超导,2011,39(6):33-37. |
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| 作者姓名： | 郭永庆 冯旺军 李翠环 陈映杉 |
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| 作者单位： | 甘肃民族师范学院物理与水电工程系;兰州理工大学理学院; |
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| 摘 要： | 根据镁和硼的基本化学性质、杂化轨道理论、前线轨道理论和粉末反应理论,分析了粉末反应中MgB<,2>晶核的形成及生长过程.这一过程可分三步完成:(1)两种粉粒碰撞接触,做反相微幅受追振动,产生MgB<,2>成相区;(2)两个硼原子相遇,价轨道经sp<'2>杂化生成B<,2>,镁原子的两个3s价电子自旋相反成对填入B<,2...
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| 关 键 词： | MgB2 sp2杂化 晶核 晶核生长 |
Research on the phase formation process of superconductor MgB_2 |
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| Guo Yongqing,Feng Wangjun,Li Cuihuan,Chen Yingshan.Research on the phase formation process of superconductor MgB_2[J].Cryogenics and Superconductivity,2011,39(6):33-37. |
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| Authors: | Guo Yongqing Feng Wangjun Li Cuihuan Chen Yingshan |
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| Institution: | Guo Yongqing1,Feng Wangjun2,Li Cuihuan2,Chen Yingshan2 (1.Department of Physics and Hydropower Engineering,Gansu Normal Univercity for Nationlities,Hezuo 747000,China,2.School of Science,Lanzhou University of Technology,Lanzhou 730050,China) |
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| Abstract: | The formation and the growth process of the crystal nuclei of MgB2 were analyzed based on the basic properties of boron and magnesium,the hybrid orbital theory,the frontier orbital theory and the theory of powder reaction.The formation process could be divided into three steps.First,two kinds of powder particles contacted and vibrated with opposite phase to generate the phase formation region of MgB2.Secondly,two boron atoms reacted to generate B2 with sp2 hybrid obits,two valence electrons of magnesium ato... |
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| Keywords: | MgB2 sp2 hybrid Crystal nuclei Growth of crystal nuclei |
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