The resistivity and magnetic susceptibility of the quenched samples for the Y-Ba-Cu oxides were measured at room temperature.The measurement for the temperature dependence of the amorphous Bi-Sr-Ca-Cu oxides with diff...The resistivity and magnetic susceptibility of the quenched samples for the Y-Ba-Cu oxides were measured at room temperature.The measurement for the temperature dependence of the amorphous Bi-Sr-Ca-Cu oxides with different heat treatment temperature was made.The resistivity and the parameters C in the formula x=X_0+C/(T-0)of the quenched samples for Y-Ba-Cu oxides decreased with lowering quench temperature,and their susceptibility did not vary monotonously with quench temperature.The tem- perature dependence of the amorphous Bi-Sr-Ca-Cu oxides gradually deviates from Curie-Weiss law with increasing heat treatment temperature.The local magnetic moments for Y-Ba-Cu and amorphous Bi-Sr-Ca-Cu oxides gradually decrease with decreasing quench tempera- ture or increasing heat treatment temperature.展开更多
Since the discovery of high T;super-conductor, much effort was made toits application. More and more evidencehas revealed that most promising fieldof high T;superconductor first to havesuccess must be the microelectro...Since the discovery of high T;super-conductor, much effort was made toits application. More and more evidencehas revealed that most promising fieldof high T;superconductor first to havesuccess must be the microelectronics andcomputer. Superconductor films for mi-croelectronic application are preparedby PVD method, such as electron beamevaporation, pulsed laser evaporation andmagnetron sputtering. In this paper, thepreliminary results of ion beam sputteringdeposition of YBaCuO film are reported展开更多
用电流加热熔化涂层法制备出结构致密、涂层均匀的 Bi 系/Ag 基超导复合带。条带可连续制备,且有较强的抗弯曲性能,在3mm 弯曲半径下不出现裂纹。热外理后样品的扫描电镜(SEM)形貌分析、EDAX 成分分析及表面 X 射线衍射结果表明,复合带...用电流加热熔化涂层法制备出结构致密、涂层均匀的 Bi 系/Ag 基超导复合带。条带可连续制备,且有较强的抗弯曲性能,在3mm 弯曲半径下不出现裂纹。热外理后样品的扫描电镜(SEM)形貌分析、EDAX 成分分析及表面 X 射线衍射结果表明,复合带界面结合紧密,超导层结构致密,成分均匀,而且组织有明显的织构特性。经860℃,50h 处理的样品,在零磁场、77K 下,临界电流密度为2.2×10~2A/cm^2。展开更多
文摘The resistivity and magnetic susceptibility of the quenched samples for the Y-Ba-Cu oxides were measured at room temperature.The measurement for the temperature dependence of the amorphous Bi-Sr-Ca-Cu oxides with different heat treatment temperature was made.The resistivity and the parameters C in the formula x=X_0+C/(T-0)of the quenched samples for Y-Ba-Cu oxides decreased with lowering quench temperature,and their susceptibility did not vary monotonously with quench temperature.The tem- perature dependence of the amorphous Bi-Sr-Ca-Cu oxides gradually deviates from Curie-Weiss law with increasing heat treatment temperature.The local magnetic moments for Y-Ba-Cu and amorphous Bi-Sr-Ca-Cu oxides gradually decrease with decreasing quench tempera- ture or increasing heat treatment temperature.
文摘Since the discovery of high T;super-conductor, much effort was made toits application. More and more evidencehas revealed that most promising fieldof high T;superconductor first to havesuccess must be the microelectronics andcomputer. Superconductor films for mi-croelectronic application are preparedby PVD method, such as electron beamevaporation, pulsed laser evaporation andmagnetron sputtering. In this paper, thepreliminary results of ion beam sputteringdeposition of YBaCuO film are reported
文摘用电流加热熔化涂层法制备出结构致密、涂层均匀的 Bi 系/Ag 基超导复合带。条带可连续制备,且有较强的抗弯曲性能,在3mm 弯曲半径下不出现裂纹。热外理后样品的扫描电镜(SEM)形貌分析、EDAX 成分分析及表面 X 射线衍射结果表明,复合带界面结合紧密,超导层结构致密,成分均匀,而且组织有明显的织构特性。经860℃,50h 处理的样品,在零磁场、77K 下,临界电流密度为2.2×10~2A/cm^2。
