The microstructures of the YBCO composited superconducting tapes with different J_c were analysed byTEM.The relationship between microstructure and J_c of the t
The influence of rare earth oxide CeO<sub>2</sub> on microstructure and wear resistance of M<sub>80</sub>S<sub>20</sub> thermal sprayand thermal spray welding c
Fluorescence spectra of Sm<sup>2+</sup>and Eu<sup>2+</sup>→Sm<sup>2+</sup>energy transfer were studied in SrB<sub>4</sub>O<sub>7</sub>.There appearsonly fluore
The sharp luminescent peaks in Yb and Er-implanted InP,SI-InP,GaAs,and n-GaAs were observed at77K.The peaks at 1.0 and 1.5μm come from(4f)<sup>2</sup>F<sub>5/2</
The luminophors of four kinds of alkaline earth meta-silicates doped with Eu<sup>3</sup> and/or Bi<sup>3+</sup>ion(s)weresynthesized and the luminescence properti
The voltammetric behaviors of rare earth ions-amino acids were studied.The reduction potential of Eu<sup>3+</sup>was shifted positively and the peak separation