On conduction mechanism in paramagnetic phase of Gd based manganites
Data(s) |
02/08/2014
02/08/2014
31/01/2011
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Resumo |
Materials belonging to the family of manganites are technologically important since they exhibit colossal magneto resistance. A proper understanding of the transport properties is very vital in tailoring the properties. A heavy rare earth doped manganite like Gd0·7Sr0·3MnO3 is purported to be exhibiting unusual properties because of smaller ionic radius of Gd. Gd0·7Sr0·3MnO3 is prepared by a wet solid state reaction method. The conduction mechanism in such a compound has been elucidated by subjecting the material to low temperature d.c. conductivity measurement. It has been found that the low band width material follows a variable range hopping (VRH) model followed by a small polaron hopping (SPH) model. The results are presented here Bull. Mater. Sci., Vol. 35, No. 1, February 2012, pp. 41–45. Cochin University of Science and Technology |
Identificador | |
Idioma(s) |
en |
Publicador |
Springer |
Palavras-Chave | #Manganite #conduction mechanism #small polaron hopping #variable range hopping. |
Tipo |
Article |