Electrical properties in C3N4 under high pressure
|Alexey N. Babushkin 1, O. L. Kobeleva 1, V. N. Khabashesku 3, E. N. Yakovlev 4, V. V. Milyavskiy 2|
1. Ural State University, Department of Physics, Lenin Av., 51, Ekaterinburg 620083, Russian Federation
During a resent years a grate attention was given to the problem of an investigation of phase transitions in C3N4 as by M.L.Cohen and co-authors were theoretical predicted the diamond-like properties of beta-C3N4. We investigated the phase transitions in the two samples of this material, which were prepared by different methods (chemical (1) and shock (2)), in the carbonado-diamond anvil cell with using the methods of electrical measurement on d.c. and impedance spectroscopy. The first sample were investigated at pressure 15GPa-43GPa, a second sample at pressure less 33GPa. A dependences of the electrical resistances R of the samples at the T=300K, in the 103Hz<f<8*105 Hz were made. A hodographs of impedance and a tangency of an angle of dielectric loss dependencies were got.
Presentation: poster at E-MRS Fall Meeting 2003, Symposium F, by Olga L. Kobeleva
See On-line Journal of E-MRS Fall Meeting 2003
Submitted: 2003-05-27 10:38 Revised: 2009-06-08 12:55