Electrical behaviour of lanthanum- and cobalt-doped strontium stannate

Autor:	C. C. Christopher, K. D. Mandal, Devendra Kumar, Mandalika S. Sastry, Om Parkash
Rok vydání:	1994
Předmět:	Strontium Materials science Stannate Inorganic chemistry Doping Analytical chemistry chemistry.chemical_element Conductivity Thermal conduction chemistry Mechanics of Materials Seebeck coefficient Lanthanum General Materials Science Charge carrier
Zdroj:	Bulletin of Materials Science. 17:253-257
ISSN:	0973-7669 0250-4707
DOI:	10.1007/bf02745177
Popis:	Electrical properties of lanthanum- and cobalt-doped strontium stannate, SrSnO3, have been studied as a function of temperature. All the compositions investigated have cubic structure. Measurement of Seebeck coefficient in one of the cobalt-doped SrSnO3 sample shows that it exhibitsp-type conductivity. Results of AC conductivity measurements show that conduction occurs by hopping of charge carriers in lanthanum-doped samples and forx=0·01 in cobalt-doped sample. Inx=0·05 sample in cobalt-doped system, conduction seems to occur in extended states.
Databáze:	OpenAIRE
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