Abstract
The electrical properties of KFe(S1-x Sex )2 (0≤x≤0.89) were studied on crystals annealed for a long period. The resistivity ρ along the c-axis shows high values: 1.6×104 Ω·cm for x=0 and 8.6×101 Ω·cm for x=0.89 at 290 K. The nonmetallic temperature-dependent resistivity is approximated by ρ∝exp [(T0/T)1/2], where T0 is a constant. Both the susceptibility and the Seebeck coefficient show metallic behavior. Observations using a transmission electron microscope indicate that the specimens consist of many grains. It is concluded that these compounds are essentially metallic. The high resistivity and the nonmetallic temperature dependence are ascribed to the imperfections in the crystal.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
