Structural and Electrical Properties of Monovalent Doped Manganites Pr0.6Sr0.4-xKxMnO3 (x=0, 0.05 and 0.1)

Rachid Thaljaoui , W. Boujelben , M. Pekała , Krystyna Pękała , A. Cheikhrouhou

Abstract

Structural and electrical properties of the mixed-valence monovalent doped manganites Pr0.6Sr0.4-xKxMnO3 (x=0, 0.05 and 0.1), prepared using the conventional solid-state synthesis method, have been investigated. Rietveld refinement of the X-ray diffraction patterns at room temperature shows a slight increase in unit cell volume with K content and confirms that all powder samples are single phase and crystallize in the orthorhombic structure with Pnma space group. Electrical resistivity measurements under and without magnetic field show a transition from the metallic to insulating behavior. The electrical conductivity is improved with increasing K content. The resistivity data in metallic region were fitted according to the electron-electron scattering process while in insulating region they were fitted using the small polaron hopping SPH model and Mott's variable range hopping VRH model. © 2012 Springer Science+Business Media New York.
Author Rachid Thaljaoui (FP / SD) - [University of Warsaw, Faculty of Chemistry]
Rachid Thaljaoui,,
- Semiconductors Division
- Uniwersytet Warszawski, Wydział Chemii
, W. Boujelben
W. Boujelben,,
-
, M. Pekała
M. Pekała,,
-
, Krystyna Pękała (FP / SD)
Krystyna Pękała,,
- Semiconductors Division
, A. Cheikhrouhou
A. Cheikhrouhou,,
-
Journal seriesJournal of Superconductivity and Novel Magnetism, ISSN 1557-1939
Issue year2013
Vol26
No5
Pages1625-1630
Keywords in EnglishPerovskite manganites, Magnetic properties, Magnetoresistance effect
ASJC Classification3104 Condensed Matter Physics; 2504 Electronic, Optical and Magnetic Materials
DOIDOI:10.1007/s10948-012-1913-6
URL http://www.scopus.com/inward/record.url?eid=2-s2.0-84871223541&partnerID=40&md5=e075d03e4c6c5e6e1ad207b6c1132f44
Languageen angielski
Score (nominal)20
Score sourcejournalList
ScoreMinisterial score = 15.0, 01-02-2020, ArticleFromJournal
Ministerial score (2013-2016) = 20.0, 01-02-2020, ArticleFromJournal
Publication indicators Scopus Citations = 11; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 0.635; WoS Impact Factor: 2013 = 0.93 (2) - 2013=0.854 (5)
Citation count*5 (2015-01-02)
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