کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1819032 | 1026043 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Strongly enhanced pinning force density in YBCO–BaTiO3 nanocomposite superconductor Strongly enhanced pinning force density in YBCO–BaTiO3 nanocomposite superconductor](/preview/png/1819032.png)
YBa2Cu3O7−δ–BaTiO3 (4 wt.%) (YBCO–BTO (4%)) composite bulk polycrystalline sample has been synthesized by solid state reaction method. The structure of composite sample has been investigated by X-ray diffraction and magnetization measurements were carried out using MPMS SQUID VSM. The superconducting transition temperature of the YBCO–BTO (4%) sample was similar to that of pure YBCO. The critical current density (Jc) for YBCO–BTO (4%) sample increases significantly as compared to pure YBCO sample. The enhancement of the critical current density in the YBCO–BTO (4%) sample has been attributed to the presence of BaTiO3 nanoparticles acting as artificial pinning centres. The introduction of BaTiO3 particles in YBCO increases pinning force density from 0.71 GN/m2 to 1.41 GN/m2 at 4 K and 0.33 MN/m2 to 0.97 MN/m2 at 77 K.
Journal: Physica C: Superconductivity - Volume 469, Issue 14, 15 July 2009, Pages 810–813