55 citations · 288 across the 13 of their papers we have counts for
13 papers
Superconducting transition temperatures in the electronic and magnetic phase diagrams of Sr2VFeAsO3-delta, a superconductor
Yujiro Tojo, Taizo Shibuya, Tetsuro Nakamura +13
We elucidate the magnetic phases and superconducting transition temperatures (Tc) in Sr2VFeAsO3-delta (21113V), an iron-based superconductor with a thick-blocking layer fabricated…
Electrical and Thermal Transport of Layered Bismuth-chalcogenide EuBiS2F at temperatures between 300 and 623 K
Yosuke Goto, Joe Kajitani, Yoshikazu Mizuguchi +2
We demonstrate the electrical and thermal transport of layered bismuth-based sulfide EuBiS2F from 300 to 623 K. Although significant hybridization between Eu 4f and Bi 6p electrons…
Effect of Sn-substitution on Thermoelectric Properties of Copper-based Sulfide, Famatinite Cu3SbS4
Yosuke Goto, Yuki Sakai, Yoichi Kamihara +1
Copper-based sulfide is an attractive material for Earth-abundant thermoelectrics. In this study, we demonstrate the effect of Sn-substitution on the electrical and thermal transpo…
Electronic structure and transport properties of Cu-deficient kuramite Cu3-xSnS4
Yosuke Goto, Yuki Sakai, Yoichi Kamihara +1
Electrical and thermal transport properties of Cu-deficient kuramite Cu3-xSnS4 (CTS) was examined as a possible earth-abundant thermoelectric material. Crystallographic structure o…
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…
Effects of the Cu off-stoichiometry on transport properties of wide gap p-type semiconductor, layered oxysulfide LaCuSO
Yosuke Goto, Mai Tanaki, Yuki Okusa +4
Layered oxysulfide LaCuSO (x = 0-0.03) was prepared to elucidate the effect of Cu off-stoichiometry on their electrical and thermal transport properties. Electrical resistivity dra…
Ferromagnetic Quantum Critical Point Induced by Tuning the Magnetic Dimensionality of the Heavy-Fermion Iron Oxypnictide Ce(RuFe)PO
Shunsaku Kitagawa, Kenji Ishida, Tetsuro Nakamura +2
We have performed 31P-NMR measurements of the c-axis-aligned poly-crystal Ce(Ru1-xFex)PO with a two-dimensional layered structure in order to understand the origin of TCurie suppre…
The effect of simultaneous substitution on the electronic band structure and thermoelectric properties of Se-doped Co3SnInS2 with the Kagome lattice
Masaya Fujioka, Taizo Shibuya, Junya Nakai +5
The thermoelectric properties and electronic band structures for Se-doped Co3SnInS2 were examined. The parent compound of this material (Co3Sn2S2) has two kinds of Sn sites (Sn1 an…
Paramagnetic Phase of a Heavy-Fermion Compound, CeFePO, Probed by 57Fe Mössbauer Spectroscopy
Tetsuro Nakamura, Takashi Yamamoto, Masanori Matoba +2
57Fe Mössbauer spectroscopy was applied to an iron-based layered compound CeFePO. At temperatures from 9.4 to 293 K, no magnetic splitting was observed in the Mössbauer spectra of…
Analysis of interdiffusion between SmFeAsO0.92F0.08 and metals for ex situ fabrication of superconducting wire
Masaya Fujioka, Masanori Matoba, Toshinori Ozaki +3
We demonstrate the fabrication of superconducting SmFeAsO1-xFx (Sm-1111) wires by using the ex-situ powder-in-tube technique. Sm-1111 powder and a binder composed of SmF3, samarium…
Effective Ex-Situ Fabrication of F-Doped SmFeAsO Wire for High Transport Critical Current Density
Masaya Fujioka, Tomohiro Kota, Masanori Matoba +4
We demonstrate the fabrication of superconducting SmFeAsO1-xFx (Sm-1111) wires by using the ex-situ powder-in-tube technique. Sm-1111 powder and a binder composed of SmF3, samarium…
Dielectric responses of the layered cobalt oxysulfide Sr_2Cu_2CoO_2S_2 with CoO_2 square-planes
S. Okada, I. Terasaki, H. Ooyama +1
We have studied the dielectric responses of the layered cobalt oxysulfide SrCuCoOS with the CoO square-planes. With decreasing temperature below the Néel temper…
Optical study of the metal-nonmetal transition in NiS
H. Okamura, J. Naitoh, N. Nanba +3
Optical reflectivity study has been made on the hexagonal (NiAs-type) Ni_{1-d}S in order to probe its electronic properties, in particular those associated with the metal-nonmetal…