Preparation and crystal structure analysis and physical properties of (LaO)CuTe

被引：11

作者：

Ohki, Y ^{[1
]}

Takase, K ^{[1
]}

Takahashi, Y ^{[1
]}

Takano, Y ^{[1
]}

Sekizawa, K ^{[1
]}

机构：

[1] Nihon Univ, Coll Sci & Technol, Dept Phys, Chiyoda Ku, Tokyo 1018308, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2006年 / 408卷

关键词：

layered oxychalcogenide; crystal structure; (LaO)CuS; (LaO)CuTe; physical properties;

D O I：

10.1016/j.jallcom.2005.04.085

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A single phase of (LaO)CuTe has been synthesized by the solid-state reaction. The lattice constants, a and c, refined by Rietveld analysis are 0.41815 and 0.93417 nm, respectively. The temperature dependence of the electrical resistivity shows a metallic behavior above 150 K and changes to a semiconductive behavior below that temperature. The value of the electronic specific heat coefficient estimated from the T-2 dependence of the C/T was almost zero. The magnetic susceptibility shows diamagnetism which is attributed to the core diamagnetism. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：98 / 100

页数：3

共 10 条

[1] Metal-insulator transition in the oxysulfides (La1-xCaxO) Cu1-xNixS studied by NMR [J].

Furukawa, Y ;

Ikeda, S ;

Kumagai, K ;

Mori, K ;

Takano, Y ;

Sekizawa, K .

PHYSICAL REVIEW B, 2000, 62 (23) :15598-15603

[2] Electronic structure of the transparent p-type semiconductor (LaO)CuS -: art. no. 245211 [J].

Inoue, S ;

Ueda, K ;

Hosono, H ;

Hamada, N .

PHYSICAL REVIEW B, 2001, 64 (24) :2452111-2452115

[3] A Rietveld-analysis program RIETAN-98 and its applications to zeolites [J].

Izumi, F ;

Ikeda, T .

EUROPEAN POWDER DIFFRACTION, PTS 1 AND 2, 2000, 321-3 :198-203

[4] SYNTHESIS AND SOME PHYSICAL-PROPERTIES OF A NEW SERIES OF LAYERED SELENIDES (LNO)CUSE (LN=LANTHANIDES) [J].

OHTANI, T ;

HIROSE, M ;

SATO, T ;

NAGAOKA, K ;

IWABE, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1993, 32 :316-318

[5]

Palazzi M., 1982, RARE EARTHS MOD SCI, V3, P347

[6] Magnetic and transport properties of layered oxysulfides (La1-xCaxO)Cu1-yNiyS (y=O and y=x) [J].

Sekizawa, K ;

Takano, Y ;

Mori, K ;

Yahagi, K .

CZECHOSLOVAK JOURNAL OF PHYSICS, 1996, 46 :1943-1944

[7] The new conductive oxysulfides [(La1-xSrx)O]CuS containing a Cu-layer [J].

Takano, Yoshiki ;

Yahagi, Ken-ichi ;

Sekizawa, Kazuko .

PHYSICA B-CONDENSED MATTER, 1995, 206 (1-4) :764-766

[8] Electrical resistivity and photoluminescence spectrum of layered oxysulfide (LaO)CuS [J].

Takase, K ;

Koyano, M ;

Shimizu, T ;

Makihara, K ;

Takahashi, Y ;

Takano, Y ;

Sekizawa, K .

SOLID STATE COMMUNICATIONS, 2002, 123 (12) :531-534

[9] Band gap engineering, band edge emission, and p-type conductivity in wide-gap LaCuOS1-xSex oxychalcogenides [J].

Ueda, K ;

Hosono, H .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (07) :4768-4770

[10] Room-temperature excitons in wide-gap layered-oxysulfide semiconductor: LaCuOS [J].

Ueda, K ;

Inoue, S ;

Hosono, H ;

Sarukura, N ;

Hirano, M .

APPLIED PHYSICS LETTERS, 2001, 78 (16) :2333-2335

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