Zeng, L. J., Yang, H. X., Zhang, Y., Tian, H. F., Ma, C., Qin, Y. B., ...
Electric transport measurements of the charge frustrated LuFe2O4, in which the charge ordering (CO) and electronic ferroelectricity are found, reveal strong nonlinear electric conduction upon...
Multi-ferroelectricity in charge ordered LuFe2O4(LuFeO3)n with n=1 (2008)
Yang, H. X., Zhang, Y., Ma, C., Tian, H. F., Qin, Y. B., Zhao, Y. G., ...
Electronic ferroelectricity from charge ordering (CO) is currently a significant issue that has been extensively investigated in the charge/spin frustrated LuFe2O4 system. Chemical substitution and...
Microstructure and charge-ordering transitions in LuFe2O4 (2007)
Zhang, Y., Yang, H. X., Ma, C., Tian, H. F., *, J. Q. Li
Microstructure properties, phase transitions, and charge ordering in the LuFe2O4 materials have been extensively investigated by means of transmission electron microscopy (TEM). The (001) twins as a...
Charge-stripe order in the electronic ferroelectric LuFe2O4 (2007)
Zhang, Y., Yang, H. X., Ma, C., Tian, H. F., *, J. Q. Li
The structural features of the charge ordering states in LuFe2O4 are characterized by in-situ cooling TEM observations from 300K down to 20K. Two distinctive structural modulations, a major q1= (1/3,...
Raman Spectroscopy Study of alpha-, beta-, gamma-NaxCoO2 and gamma-(Ca,Sr)xCoO2 (2006)
Yang, H. X., Xia, Y., Shi, Y. G., Tian, H. F., Xiao, R. J., Liu, X., ...
Raman spectroscopy measurements have been performed on alpha-, beta-, gamma-NaxCoO2 phases differing in their stacking of CoO6 octahedra along the c-axis direction. The results demonstrate that, in...
Structural properties and cation ordering in layered hexagonal CaxCoO2 (2005)
Yang, H. X., Shi, Y. G., Liu, X., Xiao, R. J., Tian, H. F., Li, J. Q.
A series of CaxCoO2 (0.15
Off-axis electron holography and microstructure of Ba0.5Sr0.5TiO3 thin film grown on LaAlO3 (2004)
Tian, H. F., Yu, H. C., Zhu, X. H., Wang, Y. G., Zheng, D. N., Yang, H. X., ...
Epitaxial Ba0.5Sr0.5TiO3 thin films grown on the (001) LaAlO3 substrates with the ferroelectric transition of about 250K have been investigated by TEM and off-axis electron holography....