56 citations · 341 across the 10 of their papers we have counts for
10 papers
Thermoelectric properties of new Bi-chalcogenide layered compounds
Yoshikazu Mizuguchi, Atsuhiro Nishida, Atsushi Omachi +1
The layered Bi-chalcogenide compounds have been drawing much attention as a new layered superconductor family since 2012. Due to the rich variation of crystal structure and constit…
Evolution of superconductivity in BiS2-based superocnductor LaO0.5F0.5Bi(S1-xSex)2
Takafumi Hiroi, Joe Kajitani, Atsushi Omachi +2
We have systematically investigated the crystal structure, magnetic susceptibility, and electrical resistivity of the BiS2-based superconductor LaO0.5F0.5Bi(S1-xSex)2 (x = 0 - 0.7)…
Enhancement of thermoelectric properties by Se substitution in layered bismuth-chalcogenide LaOBiS2-xSex
Yoshikazu Mizuguchi, Atsushi Omachi, Yosuke Goto +5
We have investigated the thermoelectric properties of the novel layered bismuth chalcogenides LaOBiS2-xSex. The partial substitution of S by Se produced the enhancement of electric…
Chemical pressure effect on superconductivity of BiS2-based Ce1-xNdxO1-yFyBiS2 and Nd1-zSmzO1-yFyBiS2
Joe Kajitani, Takafumi Hiroi, Atsushi Omachi +2
We have systematically investigated the crystal structure and the magnetic properties of BiS2-based superconductor Ce1-xNdxO1-yFyBiS2 (x = 0 - 1.0, y = 0.3, 0.5 and 0.7) and Nd1-zS…
Increase in Tc and change of crystal structure by high-pressure annealing in BiS2-based superconductor CeO0.3F0.7BiS2
Joe Kajitani, Takafumi Hiroi, Atsushi Omachi +2
Recently, several types of BiS2-based superconductor such as Bi4O4S3, REO1-xFxBiS2 (RE: rare earth) and Sr1-xLaxFBiS2 have been discovered. In this study, we have investigated the…
Element Substitution Effect on Superconductivity in BiS2-Based NdO_{1-x}F_xBiS_2
Takafumi Hiroi, Joe Kajitani, Atsushi Omachi +2
Recently, new layered superconductors having a BiS2-type conduction layer have been discovered. NdO1-xFxBiS2 is a typical BiS2-based superconductor with a maximum Tc of 5.4 K. In t…
Enhancement of Tc by uniaxial lattice contraction in BiS2-based superconductor PrO0.5F0.5BiS2
Joe Kajitani, Keita Deguchi, Takafumi Hiroi +5
We investigated the crystal structure and superconducting properties of As-grown and high-pressure-annealed PrO0.5F0.5BiS2. We found that the high-pressure annealing generates unia…
High-temperature thermoelectric properties of novel layered bismuth-sulfide LaO1-xFxBiS2
Atsushi Omachi, Joe Kajitani, Takafumi Hiroi +2
We have investigated the high-temperature thermoelectric properties of the layered compound LaO1-xFxBiS2. The electrical resistivity of LaOBiS2 showed an anomalous behavior; a meta…
Chemical pressure effect on Tc in BiS2-based Ce1-xNdxO0.5F0.5BiS2
Joe Kajitani, Atsushi Omachi, Takafumi Hiroi +2
We have investigated the crystal structure and superconducting properties of the BiS2-based layered superconductor Ce1-xNdxO0.5F0.5BiS2. Bulk superconductivity was observed for x >…
Correlation between crystal structure and superconductivity in LaO0.5F0.5BiS2
Joe Kajitani, Keita Deguchi, Atsushi Omachi +6
Correlation between crystal structure and superconducting properties of the BiS2-based superconductor LaO0.5F0.5BiS2 was investigated. We have prepared LaO0.5F0.5BiS2 polycrystalli…