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金属学报  1998, Vol. 34 Issue (9): 999-1004    
  论文 本期目录 | 过刊浏览 |
纳米SiC粒子对(BiPb)_2Sr_2Ca_2Cu_3O_(10+δ)超导体磁通钉扎性能的增强
苏晓东;阳宗全;王永忠;张成;花凌;汤洪;乔桂文
中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015;中国科学院金属研究所;沈阳;110015
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
引用本文:

苏晓东;阳宗全;王永忠;张成;花凌;汤洪;乔桂文. 纳米SiC粒子对(BiPb)_2Sr_2Ca_2Cu_3O_(10+δ)超导体磁通钉扎性能的增强[J]. 金属学报, 1998, 34(9): 999-1004.
, , , , , , . THE ENHANCEMENT OF FLUX PINNING PROPERTIES OF (BiPb)_2Sr_2Ca_2Cu_3O(10+δ) WITH ADDITION OF NANO-SiC[J]. Acta Metall Sin, 1998, 34(9): 999-1004.

全文: PDF(1169 KB)  
摘要: 在(BiPb)2Sr2Ca2Cu3O(10+δ)/nano—SiC复合材料中,纳米SiC粒子掺加适量时可在5K的低温下有效地钉扎磁通,并在77K的较高运行温度下仍能抑制超导体的热激活磁通蠕动,成为有效的磁通钉扎中心,但对临界转变温度无多大影响.
关键词 纳米SiCBi2223超导体磁通钉扎    
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.
Key wordsnano-SiC    Bi2223 superconductor    flux pinning
收稿日期: 1998-09-18     
基金资助:国家超导研究与发展中心资助;;辽宁省科学技术基金!972072
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