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Electronic structure and electron energy-loss spectra of Sr0.35CoO2
R. J. Xiao, H. X. Yang, L. F. Xu +3
The electronic structure of Sr0.35CoO2, structurally analogous to the layered NaxCoO2, has been evaluated using the local spin density approximation (LSDA). We find that evident c-…
Structural properties and cation ordering in layered hexagonal CaxCoO2
H. X. Yang, Y. G. Shi, X. Liu +3
A series of CaxCoO2 (0.15 <= x <= 0.40) materials have been prepared by means of ion exchange reaction from NaxCoO2. Transmission electron microscopy (TEM) measurements revealed a…
Effect of Ti doping on the electrical transport and magnetic properties of layered compound Na0.8CoO2
W. Y. Zhang, Y. G. Zhao, Z. P. Guo +9
Effect of Ti doping on the electrical transport and magnetic properties of layered Na0.8Co1-xTixO2 compounds has been investigated. The lattice parameters a and c increase with x.…
Physical properties, strontium ordering and structural modulation in layered hexagonal Sr0.35CoO2
H. X. Yang, Y. G. Shi, Y. Q. Guo +4
Layered Sr0.35CoO2 has been synthesized by means of an ion exchange reaction from Na0.7CoO2. Resistivity measurements show that this material can be either metallic or semiconducti…
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…
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…