Electrical Transport Properties of Yb_{8-x}Y_xV_2O₁₇ (x=0,2,8)

• Authors: B. Sawicki , M. Piz , E. Filipek , T. Groń , H. Duda
• Languages of publication: EN

Abstracts

EN

The UV-vis-NIR and electrical properties of Yb_{8-x}Y_xV_2O₁₇ for x=0, 2, and 8 were investigated. The band energy gap of 2.6 eV determined for Yb_6Y_2V_2O₁₇ (x=2) and comparable for the remaining compounds with x=0 and 8 is characteristic for insulators. Low electrical conductivity with a characteristic minimum shifting to higher temperatures from 322, via 360 to 370 K in the sequence x=0, 2 and 8, which decreases with increasing content of ytterbium was observed. Temperature dependence of thermoelectric power showed n-p transition at 410 and 467 K for x=0 and 2, respectively, and n-type conductivity for x=8, indicating mainly n-type electrical conductivity. A breakdown voltage of 26 V/mm is mainly observed for the I-V characteristics at 400 K and showing a varistor-like behavior.

Keywords

EN

72.20.Pa; 72.80.Ga; 75.20.-g

Discipline

• 72.20.Pa: Thermoelectric and thermomagnetic effects
• 72.80.Ga: Transition-metal compounds
• 75.20.-g: Diamagnetism, paramagnetism, and superparamagnetism

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 132
• Issue: 2
• Pages: 363-366

Dates

published

2017-08

Contributors

author

B. Sawicki

• University of Silesia, Institute of Physics, Uniwersytecka 4, 40-007 Katowice, Poland

author

M. Piz

• West Pomeranian University of Technology Szczecin, Faculty of Chemical Technology and Engineering, Department of Inorganic and Analytical Chemistry, al. Piastów 42, 71-065 Szczecin, Poland

author

E. Filipek

• West Pomeranian University of Technology Szczecin, Faculty of Chemical Technology and Engineering, Department of Inorganic and Analytical Chemistry, al. Piastów 42, 71-065 Szczecin, Poland

author

T. Groń

• University of Silesia, Institute of Physics, Uniwersytecka 4, 40-007 Katowice, Poland

author

H. Duda

• University of Silesia, Institute of Physics, Uniwersytecka 4, 40-007 Katowice, Poland

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Identifiers

DOI

10.12693/APhysPolA.132.363