Enhanced flux pinning in MOD-YBCO films with co-doping of BaZrO3 and Y2O3 nanoparticles

Enhanced flux pinning in MOD-YBCO films with co-doping of BaZrO3 and Y2O3 nanoparticles
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BaZrO3 和 Y2O3 纳米粒子共掺杂增强 MOD-YBCO 薄膜中的通量钉扎

DOI:
10.1016/j.jallcom.2011.10.035
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发表时间:
2012-02
影响因子:
6.2
通讯作者:
Cao, Jiangli
Cao, Jiangli
中科院分区:
材料科学2区
文献类型:
--
作者:
Ding, Fazhu;Gu, Hongwei;Zhang, Teng;Wang, Hongyan;Qu, Fei;Dai, Shaotao;Peng, Xingyu;Cao, Jiangli

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采用三氟乙酸金属有机物沉积法(TFA-MOD)在YBa 2Cu 3 O 7 −x(YBCO)薄膜中制备了BaZrO 3(BZO)和Y2 O3纳米颗粒复合薄膜。完整纳米颗粒的形成提高了Y2 O3/BZO掺杂YBCO薄膜的临界电流密度(Jc),同时保持了接近纯YBCO薄膜的临界转变温度(Tc)。YBCO薄膜中掺杂浓度为7.0mol.% BZO和7.0mol.% Y_2O_3在自场(0 T,77 K)下的Tc值为90 K,Jc值为6.5mA/cm ~ 2。在较宽的磁场范围内,磁通钉扎的强烈增强可以归因于通过优化的TFA-MOD条件产生的BZO和Y2 O3的组合的不同晶体结构。
A combined BaZrO3(BZO) and Y2O3nanoparticles has been achieved in YBa2Cu3O7−x(YBCO) films by metalorganic deposition using trifluoroacetates (TFA-MOD). The formation of integrated nanoparticles increases the critical current density (Jc) of Y2O3/BZO doped-YBCO films while keeping the critical transition temperature (Tc) close to that in the pure YBCO films. The YBCO film with 7.0mol.% BZO and 7.0mol.% Y2O3showed Tcvalue of 90K and Jcvalue of 6.5mA/cm2at self-field (0T, 77K). The strongly enhanced flux pinning over a wide range of magnetic field can be attributed to the combined different crystal structures of BZO and Y2O3created by optimized TFA-MOD conditions.
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