Influence of crystallinity on the electrical property of KFe(S1-xSex)2

Shido Nishioka; Hisao Kuriyaki; Kazuyoshi Hirakawa

doi:10.1143/jjap.35.648

Influence of crystallinity on the electrical property of KFe(S_1-xSe_x)₂

Shido Nishioka, Hisao Kuriyaki, Kazuyoshi Hirakawa

Electronic Devices

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Abstract

The electrical properties of KFe(S_1-x-Se_x)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 α 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.

Original language	English
Pages (from-to)	648-651
Number of pages	4
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	35
Issue number	2 PART A
DOIs	https://doi.org/10.1143/jjap.35.648
Publication status	Published - Feb 1996

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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title = "Influence of crystallinity on the electrical property of KFe(S1-xSex)2",

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 α 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.",

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AU - Nishioka, Shido

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AU - Hirakawa, Kazuyoshi

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N2 - 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 α 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.

AB - 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 α 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.

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Influence of crystallinity on the electrical property of KFe(S_1-xSe_x)₂

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