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Title: Electrical transport properties of Yb8-xYxV2O17 (x = 0; 2; 8)
Authors: Sawicki, Bogdan
Piz, M.
Filipek, E.
Groń, Tadeusz
Duda, Henryk
Keywords: diamagnetism; paramagnetism; electrical transport properties
Issue Date: 2017
Citation: Acta Physica Polonica. A, Vol. 132, no. 2 (2017), s. 363-365
Abstract: The UV-vis-NIR and electrical properties of Yb8􀀀xYxV2O17 for x = 0, 2, and 8 were investigated. The band energy gap of 2.6 eV determined for Yb6Y2V2O17 (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 behawior[…]
DOI: 10.12693/APhysPolA.132.363
ISSN: 0587-4246
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