研究者詳細 - 伊藤　恵司

MISC - 伊藤　恵司

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液体In-Se系の磁化率

Journal of the Physical Society of Japan 67 ( 9 ) 3240 - 3243 1998年

Itoh Keiji, Usuki Takesi, Tamaki Shigeru

Journal of the Physical Society of Japan 67 ( 7 ) 2415 - 2420 1998年

記述言語：英語出版者・発行元：一般社団法人日本物理学会

Electronic and ionic conductivities and thermoelectric power of liquid In1-x–Sex system have been measured as a function of concentration and temperature. The electronic conductivity in the system shows a deep minimum near the Se composition x=0.58 and the ionic conductivity has a broad maximum at this composition, where the thermoelectric power shows a large negative maximum. The electronic conductivity and thermoelectric power were analyzed in terms of the Fermi-Dirac integrals. It is found that the shape of the density of state, N(E), changes gradually with concentration.

DOI： 10.1143/JPSJ.67.2415

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00054433311?from=CiNii

Ionic Conduction and Electronic Properties in Liquid In–Se System

Itoh Keiji, Usuki Takesi, Tamaki Shigeru

Journal of the Physical Society of Japan 67 ( 7 ) 2415 - 2420 1998年

記述言語：英語出版者・発行元：一般社団法人日本物理学会

DOI： 10.1143/JPSJ.67.2415

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CiNii Books

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00054433311?from=CiNii

28p-X-1 砒素-カルコゲン系液体合金の局所構造

臼杵毅, 伊藤恵司, 植村治, 亀田恭男

日本物理学会講演概要集 52 ( 1 ) 531 - 531 1997年3月

溶融(In_<1/2>Pb_<1/2>)-Te系の構造と電子的性質

伊藤恵司, 臼杵毅, 植村治, 亀田恭男

日本物理学会講演概要集. 秋の分科会 1995 ( 3 ) 288 - 288 1995年9月

NEUTRON-DIFFRACTION STUDY OF LIQUID (TL1/2PB1/2)-X (X-TE,SE) SYSTEMS

T USUKI, O UEMURA, K ITOH, Y KAMEDA

PHYSICA B 213 555 - 557 1995年8月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

Neutron diffraction measurements have been carried out on liquid (TI1/2Pb1/2)(1-y)X(y)(X:Te,Se) systems which exhibit a typical compound-forming behaviour at y = 3/7. Radial distribution analysis at y = 3/7 has indicated that the bonding nature of T1-X and Pb-X is more or less ionic, as expected from the previous result of electronic properties. In order to investigate the difference in electronic behaviour between these two liquid systems in the chalcogen rich region, we derive the X-X partial distribution function g(X-X)(r), assuming that each partial function at y > 3/7 is independent of the alloy composition. g(Se-Se)(r) has a well-resolved first peak at r similar to 0.230 nm, suggesting that covalent Se-Se bonds appear in the Se rich region. On the other hand, g(Te-Te)(r) is somewhat structureless, although the first peak is included in the covalent region. The whole functional form of both g(X-X)(r) is roughly similar to that of g(r) in pure liquid Te or Se.

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ELECTRONIC AND STRUCTURAL-PROPERTIES OF THE LIQUID (TL1/2PB1/2)-SE SYSTEM

T USUKI, K ITOH, S AITA, Y KAMEDA, O UEMURA

PHYSICA STATUS SOLIDI B-BASIC RESEARCH 187 ( 1 ) 157 - 168 1995年1月

記述言語：英語出版者・発行元：AKADEMIE VERLAG GMBH

The electrical conductivity, magnetic susceptibility, and thermoelectric power in the liquid (Tl1/2Pb1/2)-Se system are measured over wide temperature and composition ranges. It is observed that the electrical conductivity in the system sharply falls near the stoichiometric composition of Tl2Pb2Se3 and the magnetic susceptibility has a diamagnetic maximum at this composition, where the thermoelectric power changes its sign. In addition, the DTA investigation shows that the liquidus temperature of the system has a maximum around this composition. These results suggest that a short-range order appears around the composition of Tl2Pb2Se3 in the liquid (Tl1/2Pb1/2)-Se system. The delocalized electron analysis using both susceptibility and conductivity data suggests that the bonding nature of liquid Tl2Pb2Se3 is rather ionic. The radial distribution study by neutron diffraction also exhibits that the first peak position of g(r) for liquid Tl2Pb2Se3 is located near the ionic bond distance of metal and chalcogen atoms. On the other hand, covalent Se-Se bonds are formed in the Se-rich composition range.

DOI： 10.1002/pssb.2221870115

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液体(Tl_1/2Pb_1/2)-Se系の電子的性質と構造

USUKI T, ITOH K, AITA S, KAMEDA Y, UEMURA O

European Conference on Physics of Magnetism 2002 187 ( 1 ) 157 - 168 1995年

3p-YC-1 液体(Tl_<1/2>Pb_<1/2>)-Se系の金属-非金属転移

臼杵毅, 植村治, 伊藤恵司, 亀田恭男

日本物理学会講演概要集. 秋の分科会 1994 ( 3 ) 196 - 196 1994年8月

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