The magnetic properties of 1T-TaS_(2) and 1T-Fe_(0.07)Ta_(0.93)S_(2) have been studied.Experimental results show that the phase transition temperature of IT-TaS_(2) is a function of the magnetic field.At low temperatu...The magnetic properties of 1T-TaS_(2) and 1T-Fe_(0.07)Ta_(0.93)S_(2) have been studied.Experimental results show that the phase transition temperature of IT-TaS_(2) 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 antifer-romagnetic coupling.展开更多
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 d...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)=Tc0+γH^(2/5)due to a strong coupling between electrons and the magnetic field.展开更多
High temperature electrical and thermal transport properties,that is,electrical conductivity,Seebeck coefficient and thermal conductivity,of CdO ceramics have been investigated.Because of the good electrical propertie...High temperature electrical and thermal transport properties,that is,electrical conductivity,Seebeck coefficient and thermal conductivity,of CdO ceramics have been investigated.Because of the good electrical properties and low thermal conductivity,the dimensionless figure-of-merit ZT of the CdO ceramics reaches 0.34 at 1023 K.This value is comparable to the best reported ZT for the n-type oxide ceramic thermoelectric materials and remains as potential to be further improved by porosity controlling or nanostructuring.展开更多
基金Supported by the National Natural Science Foundation of China and the State Key Laboratory for Magnetism,Institute of Physics,Chinese Academy of Sciences.
文摘The magnetic properties of 1T-TaS_(2) and 1T-Fe_(0.07)Ta_(0.93)S_(2) have been studied.Experimental results show that the phase transition temperature of IT-TaS_(2) 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 antifer-romagnetic coupling.
基金Supported by the National Natural Science Foundation of Chinathe State Key Laboratory for Magnetism,Institute of Physics,Chinese Academy of Sciences.
文摘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)=Tc0+γH^(2/5)due to a strong coupling between electrons and the magnetic field.
基金supported by the Natural Science Foundation for Distinguished Young Scholars of Hebei Province(Grant No.A2013201249)the National Natural Science Foundation of China(Grant No.51372064)
文摘High temperature electrical and thermal transport properties,that is,electrical conductivity,Seebeck coefficient and thermal conductivity,of CdO ceramics have been investigated.Because of the good electrical properties and low thermal conductivity,the dimensionless figure-of-merit ZT of the CdO ceramics reaches 0.34 at 1023 K.This value is comparable to the best reported ZT for the n-type oxide ceramic thermoelectric materials and remains as potential to be further improved by porosity controlling or nanostructuring.
