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| THE ENHANCEMENT OF FLUX PINNING PROPERTIES OF (BiPb)_2Sr_2Ca_2Cu_3O(10+δ) WITH ADDITION OF NANO-SiC |
| SU Xiaodong;YANG Zongquan; WANG Yongzhong;ZHANG Cheng; HUA Ling; TANG Hong;QIAO Guiwen (Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015)Correspondent: SU Xiaodong; Tel: (024)25843531-55842; E-mail: xdsu@imr.ac.cn |
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Cite this article:
SU Xiaodong;YANG Zongquan; WANG Yongzhong;ZHANG Cheng; HUA Ling; TANG Hong;QIAO Guiwen (Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015)Correspondent: SU Xiaodong; Tel: (024)25843531-55842; E-mail: xdsu@imr.ac.cn. THE ENHANCEMENT OF FLUX PINNING PROPERTIES OF (BiPb)_2Sr_2Ca_2Cu_3O(10+δ) WITH ADDITION OF NANO-SiC. Acta Metall Sin, 1998, 34(9): 999-1004.
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Abstract The influences of nano-SiC on the superconducting properties of Bi2223, especially on the flux pinning have been studied by using XRD, SEM, SQUID, VSM. The results reveal that the nano-particles of SiC do not change the transition temperature obviously. The magnetization areas on the M - H curve, intragranular critical density Jcm and average flux pinning force Fp were improved due to proper amount of nano-SiC addition at temperature 5 K and 77 K. According to these evidences, we can infer that the nano-SiC particles introduced and homogenuosly dispersed in superconducting matrice take the role of effective flux pinning centers.
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Received: 18 September 1998
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