| i_(2-x)Pb_xS_2Ca_2Cu_3Oy陶瓷的超导电性及显微结构分析 |
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| 引用本文： | 沈效农,尚淑霞,王弘,王卓,张子清.i_(2-x)Pb_xS_2Ca_2Cu_3Oy陶瓷的超导电性及显微结构分析[J].山东大学学报(理学版),1992(1). |
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| 作者姓名： | 沈效农 尚淑霞 王弘 王卓 张子清 |
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| 作者单位： | 山东大学实验中心，山东大学实验中心，山东大学晶体所，山东大学晶体所，山东大学物理系 |
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| 摘 要： | 报道用直接烧结和二次烧结工艺制备Bi_(2-x)Pb_xSr_2Ca_2Cu_3Oy超导陶瓷,X=0.2,0.3,0.4,0.6,0.7。各样品的Tc(zero)>105K。对样品的显微结构分析表明,只有片状和层状晶粒是超导晶粒;掺Pb对超导相的形成和超导晶粒的生长均有重要-影响;直接烧结工艺有利于Tc(zero)的提高;二次烧结工艺有利于超导晶粒生长和消除杂相。
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| 关 键 词： | 烧结工艺 掺Pb超导陶瓷 超导晶粒生长 |
SUPERCONDUCTIVITY AND MICROSTRUCTURE OF Bi_(2-x)Pb_x St_2 Ca_2 Cu_3 Oy CERAMIC |
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| Shen Xiaonong,Shang Shuxia Wang Hong,Wang Zhuo.SUPERCONDUCTIVITY AND MICROSTRUCTURE OF Bi_(2-x)Pb_x St_2 Ca_2 Cu_3 Oy CERAMIC[J].Journal of Shandong University,1992(1). |
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| Authors: | Shen Xiaonong Shang Shuxia Wang Hong Wang Zhuo |
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| Abstract: | A serieas of ceramis samples of Bi_(2-x)Pb_xSr_2Ca_2Cu_3Oy(x=0.2, 0.3, 0.4,0.6, 0.7)has been prepared by using a direct sintering and twice sintering processes. The measured Tc(zero)is higher than 105K for all samples. The analysis of microstructure of samples indicate that the plate like crystal grains are superconductive; the Pb doping has an important effect on the formation and crystal growth of superconducting grain; the direct sintering process enhance the Tc(zero)of samples and twice sintering process is better for the growth of superconducting grain. |
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| Keywords: | sintering process Pb doped superconducting ceramic level growth of superconducting grain |
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