Thermoelectric properties of PbTe prepared at high pressure and high temperature
P W Zhu; L X Chen; X Jia; H A Ma; G Z Ren; W L Guo; W Zhang; G T Zou; P W Zhu; National Laboratory of Superhard Materials, Jilin University, Changchun 130023, Peoples Republic of China; L X Chen; National Laboratory of Superhard Materials, Jilin University, Changchun 130023, Peoples Republic of China; X Jia; National Laboratory of Superhard Materials, Jilin University, Changchun 130023, Peoples Republic of China; H A Ma; National Laboratory of Superhard Materials, Jilin University, Changchun 130023, Peoples Republic of China; G Z Ren; National Laboratory of Superhard Materials, Jilin University, Changchun 130023, Peoples Republic of China; W L Guo; National Laboratory of Superhard Materials, Jilin University, Changchun 130023, Peoples Republic of China; W Zhang; National Laboratory of Superhard Materials, Jilin University, Changchun 130023, Peoples Republic of China; G T Zou; National Laboratory of Superhard Materials, Jilin University, Changchun 130023, Peoples Republic of China
Журнал:
Journal of Physics: Condensed Matter
Дата:
2002-11-11
Аннотация:
Lead telluride (PbTe) with rock-salt structure was successfully obtained by a high-pressure and high-temperature (HPHT) method. The orientation of the PbTe samples varies with pressure increase. The results—a decrease in the Seebeck coefficient, resistivity and thermal conductivity of PbTe with pressure but an increase in the thermoelectric power figure σS<sup>2</sup>—indicate that the figure of merit Z of PbTe samples can be improved several times over by using HPHT.
84.73Кб