The Influence of Ti Doping at the Mn Site on Magnetoresistance and Thermopower Properties of Sm0.6Sr0.4MnO3

The influence of non-magnetic Ti doping at the Mn site on magnetoresistance and thermopower properties of Sm 0.6 Sr 0.4 MnO 3 (Sm 0.6 Sr 0.4 Mn 1-x Ti x O 3 , x = 0, 0.1 and 0.15 denoted by SMO, STMO 0.1 and STMO 0.15 respectively) prepared by solid-state reaction method is investigated. All three s...

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Bibliographic Details
Published inJournal of superconductivity and novel magnetism Vol. 35; no. 9; pp. 2381 - 2390
Main Authors Anand, Anitha, Manjuladevi, M., Veena, R. K., Veena, V. S., Sagar, S.
Format Journal Article
LanguageEnglish
Published New York Springer US 2022
Subjects
Characterization and Evaluation of Materials
Condensed Matter Physics
Magnetic Materials
Magnetism
OriginalPaper
Physics
Physics and Astronomy
Strongly Correlated Systems
Superconductivity
Perovskites
Magnetoresistance
Thermoelectric power
Manganites
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Summary:The influence of non-magnetic Ti doping at the Mn site on magnetoresistance and thermopower properties of Sm 0.6 Sr 0.4 MnO 3 (Sm 0.6 Sr 0.4 Mn 1-x Ti x O 3 , x = 0, 0.1 and 0.15 denoted by SMO, STMO 0.1 and STMO 0.15 respectively) prepared by solid-state reaction method is investigated. All three samples exhibit metal–insulator transition. STMO 0.15 has a sudden drop of resistivity around 100 K. At low temperatures, the magnetoresistances of the samples get increased with Ti doping. All samples have negative thermoelectric power (TEP) at room temperature. Both high-temperature resistivity and TEP of the samples are successfully analyzed using the Variable Range hopping (VRH) model. Power factor, which determines the quality of a TEP material, is comparatively high for 15% Ti-doped sample STMO 0.15 at room temperature.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-022-06202-y