Measurement of Seebeck effect (thermoelectric power) at high pressure up to 40 GPa

被引：29

作者：

Shchennikov, Vladimir V. ^{[1
]}

Ovsyannikov, Sergey V. ^{[1
,2
,3
]}

Manakov, Andrei Y. ^{[4
]}

机构：

[1] Russian Acad Sci, High Pressure Grp, Inst Met Phys, Urals Div, Ekaterinburg 620041, Russia

[2] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

[3] Univ Paris 06, CNRS, Inst Mineral & Phys Milieux Condenses, F-75015 Paris, France

[4] Russian Acad Sci, Siberian Div, AV Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2010年 / 71卷 / 08期

关键词：

High pressure; X-ray diffraction; Electrical properties; Phase transitions; Transport properties; INTERMEDIATE VALENCE STATE; INDUCED PHASE TRANSITIONS; STRUCTURAL-PROPERTIES; HYDROSTATIC-PRESSURE; SINGLE-CRYSTALS; AB-INITIO; CENI; SEMICONDUCTORS; TRANSPORT; LEAD;

D O I：

10.1016/j.jpcs.2010.03.028

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The paper reports details of a high-pressure thermoelectric power (Seebeck effect) technique up to 40 GPa. Several different types of high-pressure cells with anvil insets are presented. The technique was applied for measurements of pressure dependence of the thermopower of several substances including elemental metals (lead, Pb; indium, In), cerium nickel alloy, Ce-Ni and sulphur, S. Two peculiarities in the pressure dependences of the thermopower of CeNi were found and attributed to structural transformations, near similar to 5 and similar to 10 GPa. These transitions were confirmed in direct X-ray diffraction studies. Sulphur compressed to 40 GPa exhibited a hole type conductivity and the thermopower value was about similar to+1 mV/K. Additionally, as an example of pressure calibration, the data on the electrical resistivity of zinc selenide, ZnSe, are given in a range of 0-23 GPa. These data suggest three possible scenarios of phase transitions from a rock salt (RS) high-pressure phase of ZnSe under decompression: RS -> zinc blende (ZB), RS -> cinnabar -> ZB, and RS -> wurtzite. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1168 / 1174

页数：7

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