Research Journal of Engineering and Technology
Year : 2015, Volume : 6, Issue : 1
First page : ( 188) Last page : ( 190)
Print ISSN : 0976-2973. Online ISSN : 2321-581X.
Article DOI : 10.5958/2321-581X.2015.00027.6

Study of Structural and Electrical Properties of R_0.67Sr_0.33MnO₃, (R = Nd, Pr)

Kumar Naresh*, Kanwar Richa

Department of Physics, Sidharth Govt. College, Nadaun-177033 (H.P.) India

*Corresponding Author: nareshphy@gmail.com

PACS: 75.47.Lx, 75.30.Gw, 61.05.C-, 75.40.-s

Abstract

We have reported the results of resistivity behavior of R_0.67Sr_0.33MnO₃, (R =Nd, Pr) manganites. The samples have been synthesised by solid state reaction method. These compounds were characterized for phase formation by using X-Ray diffraction (XRD) technique and low temperature resistivity versus temperature measurement. The absence of any impurity peak shows the monophasic nature of the prepared samples. The low temperature resistivity-temperature study shows metal to insulator transition at 250K and 290K for Nd_0.67Sr_0.33MnO₃ and Pr_0.67Sr_0.33MnO₃ respectively. We have fitted the R-T behavior for various conduction mechanisms like variable range hopping, polaron hopping etc.

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Keywords

Manganites, Electrical transport, XRD, VRH model.

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