再求英文文献5篇，谢谢。

【序号】：1

【作者】：Y Ishii, T Nakashima, Y Yamazaki, J Shimoyama, H Ogino, S Horii and K Kishio

【题名】：Enhanced flux pinning properties of RE123 melt-solidified bulks by dilute impurity doping

【刊名】：Journal of Physics: Conference Series

【年、卷、期、起止页码】：65, 224508 (2008)

【全文链接】：http://iopscience.iop.org/1742-6596/97/1/012234

【序号】：2

【作者】：Y Ishii1, T Akasaka1, Y Kinemura1, H Ogino1, S Horii2, J Shimoyama1 and K Kishio1

【题名】：Largely improved Jc at low temperatures observed in Y123 single crystals with chemically introduced point defects

【刊名】：Journal of Physics: Conference Series

【年、卷、期、起止页码】：390, 143 (2010)

【全文链接】：http://iopscience.iop.org/1742-6596/234/1/012018

【序号】：3

【作者】：T Nakashima, Y Ishii, T Katayama, H Ogino, S Horii, J Shimoyama and K Kishio

【题名】：Novel functions of silver on superconducting properties for RE123 melt-solidified bulks

【刊名】：Journal of Physics: Conference Series

【年、卷、期、起止页码】：2008 89 4

【全文链接】：http://iopscience.iop.org/1742-6596/97/1/012007

【序号】：4

【作者】：Alok K. Jha, Neeraj Khare

【题名】：Nanoscopic netted structure of compositional modulation in (Sm0.33Eu0.33Gd0.33)Ba2Cu3O7-δ superconductors

【刊名】：Applied Physics Letters
【年、卷、期、起止页码】：2005 105 672

【全文链接】：http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=4893843&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D4893843

【序号】：5

【作者】：Jun-ichi Shimoyama, Yoshiaki Tazaki, Yui Ishii, Takayoshi Nakashima, Shigeru Horii and Kohji Kishio

【题名】：Enhanced flux pinning properties of YBa2Cu3Oy by dilute impurity doping for CuO chain

【刊名】：Applied Physics Letters

【年、卷、期、起止页码】：2006, 89, 1163-1170

【全文链接】：http://apl.aip.org/resource/1/applab/v89/i20/p202514_s1?isAuthorized=no

谢谢。