Dai Shouyu

Magnetic properties of 1T-TaS2

The magnetic properties of 1 T-TaS2 and 1 T-Fe-0.07 Ta-0.93 S-2 have been studied, Experimental results show that the phase transition temperature of 1 T-TaS2 is a function of the magnetic field, At low temperatures, both compounds are in a mixed state of charge density wave -spin density wave due to the coherent superposition of antiferromagnetic coupling.

MAGNETIC-PROPERTIES OF COMPOUND FE-TA-S

A novel compound Fe-Ta-S crystal has been obtained using iodine vapor transport technology. At low temperature this compound is in a strong diamagnetic state, which is similar to a superconductor. The dependence of the diamagnetic phase transition temperature on the magnetic field could be expressed as T-c = T-c0 + gamma H-2/5 due to a strong coupling between electrons and the magnetic field.

Bulk interaction between ionic conductor AGI and dispersed second phase

The bulk interaction between two phases in AgI(ν-Al2O3 or α-Fe2O3) has been investigated by means of electrical conductivity, DTA and Mossbauer spectra. It shows that both α->β phase transition of AgI and Morin transition of α-Fe2O3 influence each other.