Doping effect on transport properties of layered oxysulfide Sr 2Cu2CoO2S2 with CoO2 square planes

Satoshi Okada; Hirotaka Okabe; Masanori Matoba

doi:10.1016/S0921-4526(02)02600-5

Doping effect on transport properties of layered oxysulfide Sr ₂Cu₂CoO₂S₂ with CoO₂ square planes

Satoshi Okada
, Hirotaka Okabe
, Masanori Matoba

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Article › peer-review

Abstract

Layered cobalt oxysulfide Sr₂Cu₂CoO₂S ₂ crystallizes in an unusual intergrowth structure which represents a combination of SrCu₂S₂ and SrCoO₂. Sr ₂Cu₂CoO₂S₂ is a p-type antiferromagnetic semiconductor with T_N(= 200 K). And below T _t(= 125 K), the antiferromagnetic nature is changed from 2D to 3D. We studied Seebeck coefficient of Sr₂Cu₂CoO ₂S₂ and its Cu-doped compounds. Their Seebeck coefficients near T, tend to enhance by the Cu-doping into CoO₂ square planes. The curves of the temperature dependence of Sr₂Cu ₂Cu_xCo_1-xO₂S₂ is changed near T_N, and the change points shift to high temperature by Cu-doping. The behavior resembles in T_N shift of the magnetic property. The transport properties of Cu-doped Sr₂Cu ₂CoO₂S₂ is affected by their magnetism.

Original language	English
Pages (from-to)	916-917
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	329-333
Issue number	II
DOIs	https://doi.org/10.1016/S0921-4526(02)02600-5
Publication status	Published - 2003 May

Keywords

Oxysulfide
Seebeck coefficient
SrCuCoOS

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(02)02600-5

Cite this

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title = "Doping effect on transport properties of layered oxysulfide Sr 2Cu2CoO2S2 with CoO2 square planes",

abstract = "Layered cobalt oxysulfide Sr2Cu2CoO2S 2 crystallizes in an unusual intergrowth structure which represents a combination of SrCu2S2 and SrCoO2. Sr 2Cu2CoO2S2 is a p-type antiferromagnetic semiconductor with TN(= 200 K). And below T t(= 125 K), the antiferromagnetic nature is changed from 2D to 3D. We studied Seebeck coefficient of Sr2Cu2CoO 2S2 and its Cu-doped compounds. Their Seebeck coefficients near T, tend to enhance by the Cu-doping into CoO2 square planes. The curves of the temperature dependence of Sr2Cu 2CuxCo1-xO2S2 is changed near TN, and the change points shift to high temperature by Cu-doping. The behavior resembles in TN shift of the magnetic property. The transport properties of Cu-doped Sr2Cu 2CoO2S2 is affected by their magnetism.",

keywords = "Oxysulfide, Seebeck coefficient, SrCuCoOS",

author = "Satoshi Okada and Hirotaka Okabe and Masanori Matoba",

year = "2003",

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doi = "10.1016/S0921-4526(02)02600-5",

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volume = "329-333",

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journal = "Physica B: Condensed Matter",

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TY - JOUR

T1 - Doping effect on transport properties of layered oxysulfide Sr 2Cu2CoO2S2 with CoO2 square planes

AU - Okada, Satoshi

AU - Okabe, Hirotaka

AU - Matoba, Masanori

PY - 2003/5

Y1 - 2003/5

N2 - Layered cobalt oxysulfide Sr2Cu2CoO2S 2 crystallizes in an unusual intergrowth structure which represents a combination of SrCu2S2 and SrCoO2. Sr 2Cu2CoO2S2 is a p-type antiferromagnetic semiconductor with TN(= 200 K). And below T t(= 125 K), the antiferromagnetic nature is changed from 2D to 3D. We studied Seebeck coefficient of Sr2Cu2CoO 2S2 and its Cu-doped compounds. Their Seebeck coefficients near T, tend to enhance by the Cu-doping into CoO2 square planes. The curves of the temperature dependence of Sr2Cu 2CuxCo1-xO2S2 is changed near TN, and the change points shift to high temperature by Cu-doping. The behavior resembles in TN shift of the magnetic property. The transport properties of Cu-doped Sr2Cu 2CoO2S2 is affected by their magnetism.

AB - Layered cobalt oxysulfide Sr2Cu2CoO2S 2 crystallizes in an unusual intergrowth structure which represents a combination of SrCu2S2 and SrCoO2. Sr 2Cu2CoO2S2 is a p-type antiferromagnetic semiconductor with TN(= 200 K). And below T t(= 125 K), the antiferromagnetic nature is changed from 2D to 3D. We studied Seebeck coefficient of Sr2Cu2CoO 2S2 and its Cu-doped compounds. Their Seebeck coefficients near T, tend to enhance by the Cu-doping into CoO2 square planes. The curves of the temperature dependence of Sr2Cu 2CuxCo1-xO2S2 is changed near TN, and the change points shift to high temperature by Cu-doping. The behavior resembles in TN shift of the magnetic property. The transport properties of Cu-doped Sr2Cu 2CoO2S2 is affected by their magnetism.

KW - Oxysulfide

KW - Seebeck coefficient

KW - SrCuCoOS

UR - https://www.scopus.com/pages/publications/23044495867

UR - https://www.scopus.com/pages/publications/23044495867#tab=citedBy

U2 - 10.1016/S0921-4526(02)02600-5

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