ELECTRICAL-CONDUCTION IN LEAD-IRON GLASSES

Authors
Citation
S. Mandal et A. Ghosh, ELECTRICAL-CONDUCTION IN LEAD-IRON GLASSES, Journal of physics. Condensed matter, 8(7), 1996, pp. 829-836
Citations number
24
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
09538984
Volume
8
Issue
7
Year of publication
1996
Pages
829 - 836
Database
ISI
SICI code
0953-8984(1996)8:7<829:EILG>2.0.ZU;2-O
Abstract
Temperature and compositional dependences of electrical conductivity i n lead-iron glasses are reported. The experimental results are analyse d in the light of existing theories. It has been observed that the ele ctrical conduction in these glass compositions at high temperatures is best described by Mott's phonon-assisted hopping model, while the low -temperature data are consistent with the variable-range hopping model . Hopping at high temperatures occurs in the non-adiabatic regime. The generalized hopping model of Schnakenberg is the best to interpret th e temperature dependences of the conductivity and activation energy ov er the glass compositions studied. Values of the physical parameters o btained by the best fits of the experimental data are consistent with the glass compositions.