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10 papers
Electron energy loss spectra of Na0.33CoO2.yH2O (y = 0, 0.6 and 1.3)
J. Q. Li, H. X. Yang, R. J. Xiao +2
Electron energy loss (EEL) spectra have been obtained on materials with the nominal compositions of Na0.33CoO2_yH2O (y = 0, 0.6 and 1.3). Spectral analyses revealed systematic chan…
Phase separation, effects of magnetic field and high pressure on charge ordering in y-Na0.5CoO2
H. X. Yang, Y. G. Shi, C. J. Nie +7
Transmission electron microscopy observations reveal the presence of complex superstructures and remarkable phase separation in association with Na-ordering phenomenon in y-Na0.5Co…
Superstructure, sodium ordering and antiferromagnetism in NaxCoO2 (0.75<x<1.0)
Y. G. Shi, H. C. Yu, C. J. Nie +1
Transmission-electron-microscopy investigation reveals the presence of a superstructure with a doubled period of 2d110 in the NaxCoO2 materials for x ranging from 0.75 to 1.0. Syst…
Effects of Mn-substitution for Co on the structure and physical properties of NayCoO2
W. Y. Zhang, H. C. Yu, Y. G. Zhao +4
Structure, transport and magnetic properties have been investigated for layered NaCo1-xMnxO2 materials. With the increase of Mn-doping amount, measurements of x-ray diffraction ind…
Raman scattering, X-ray photoemission spectra and superconductivity of a tiny Ag diffusion to MgCNi3
Fa-Min Liu, J. Q. Li, C. Dong +3
The tiny Ag diffusion to MgCNi3 has been prepared by solid states reaction. Its structure was characterized by X-ray diffractometer (XRD). The results show that a small mount of Ag…
Optical and magnetic properties of Co-TiO2 sandwich Composite films grown by magnetron sputtering
Fa-Min Liu, Tian-Min Wang, J. Q. Li +2
The transition metal ions doped with TiO2 films are of magnetic properties at room temperatures and have stimulated many scientists to study other properties. The Co-TiO2 sandwich…