无机材料学报2012，Vol.27Issue(4)：439-444,6.DOI:10.3724/SP.J.1077.2012.11705
机械合金化合成高临界场Sm0.85Nd0.15FeAsO0.85F0.15超导体
High Upper Critical Field of Sm0.85Nd0.15FeAsO0.85F0.15 Superconductors by Mechanical Alloying Synthesis
摘要
Abstract
High quality iron-based superconductors of Sm0.85Nd0.15FeAsO0.85F0.15 were reproducibly synthesized from highly reactive powders prepared by mechanical alloying method,The samples show Tc around 51 K,with an upper critical field (Hc2) up to 377 T determined from WHH formula,which is much higher than those found in the samples prepared from conventional solid state reactions (＜ 200 T),The high Hc2 is closely correlated with its microstructure.It is proposed that the mechanically alloyed raw materials contained high densities of lattice distortions,which were partially maintained during rapid heating and low temperature sintering,thus contributing to flux pinning in the final fine-grain ceramics.关键词
铁基超导体/高临界场/机械合金化/低温烧结Key words
iron-based superconductor/high upper critical field/mechanical alloying/low-temperature sintering分类
信息技术与安全科学引用本文复制引用
方爱华,谢晓明,黄富强,江绵恒..机械合金化合成高临界场Sm0.85Nd0.15FeAsO0.85F0.15超导体[J].无机材料学报,2012,27(4):439-444,6.基金项目
Knowledge Innovation Program of the Chinese Academy of Sciences （）
Shanghai Fundamental Research (10JC1415800) （10JC1415800）
