Enhancement of superconducting properties of Bi-2212 ceramics by vanadium-sodium co-doping

被引：10
|
作者：
Calis, Murat [1 ]
Ozkurt, Berdan [1 ,2 ,3 ]
Aytekin, M. Ersin [1 ]
Gun, Esen [1 ]
Kir, M. Ebru [3 ]
Oztornaci, Ugur [1 ]
机构：
[1] Mersin Univ, Adv Technol Res & Applicat Ctr, TR-33343 Yenisehir, Mersin, Turkey
[2] Mersin Univ, Fac Tarsus Technol, Dept Energy Syst Engn, Mersin, Turkey
[3] Mersin Univ, Fac Arts & Sci, Dept Phys, TR-33343 Ciftlikkoy, Mersin, Turkey
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2016年 / 27卷 / 03期
关键词：
MECHANICAL-PROPERTIES; SUBSTITUTION; IMPROVEMENT; DENSITY;
D O I：
10.1007/s10854-015-4075-z
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Bi2Sr2-xVxCa1Cu1.75Na0.25Oy superconductors with x = 0, 0.05, 0.1 and 0.25 were prepared by the classic solid-state reaction method. The effects of vanadium substitution have been investigated by means of X-ray powder diffraction, scanning electron microscopy, dc electrical resistivity, and magnetic hysteresis loop measurements. Results show that the superconducting properties of Bi-2212 phase can be significantly improved with x = 0.05 vanadium substitution. SEM micrographs show the presence of plate-like crystals in all samples, implying the composition of 2212 phases. In addition, J(c) values of the samples were calculated from the hysteresis loop measurement by using the Bean's model showing that J(c) significantly increases with x = 0.05 vanadium substitution.
引用
收藏
页码：2670 / 2675
页数：6
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