摘要
研究了制备工艺对YBa2Cu3O7-δ样品品质的影响,测定了YBa2Cu3O7-δ样品的电磁特性.结果表明,在预烧温度910℃,预烧时间24 h条件下烧结的混合物,压片压力为9 MPa,压力持续时间为20 s^40 s时最易压片成型;超导转变宽度和室温电阻率随烧结温度的增加而明显减小;烧结温度在920℃~940℃时样品的结构品质和超导电物理性能具有良好的稳定性和可靠性.
The influences of YBa2 Cu30T_a samlpes quality by the preparation technics are studied. The electric and the magnetic properties are performed, The results show that under the compacted condition of sintering temperautre is 910 ℃ and sintering time is 24 h, MPa for 20 s - 40 s was pressed as tablets easily. And the superconducting transform temperature decreases obviously with the increase of sintering temperature. Under the condi- tion of 920 ℃ ~ 940 ℃ ,the superconductivity and the structure of YBa2Cu3O7-δ samples have good stability and reliability.
出处
《郑州轻工业学院学报(自然科学版)》
CAS
2006年第3期18-20,24,共4页
Journal of Zhengzhou University of Light Industry:Natural Science
基金
河南省自然科学基金项目(0411023100)
河南省教育厅自然科学基础研究计划项目(2004210087)
郑州轻工业学院科研基金资助项目
关键词
YBA2CU3O7-Δ
超导电性
烧结温度
电磁特性
高温超导
YBa2Cu3O7-δ
superconductivity
sintering temperature
electric and magnetic property
superconductivity