Magnetocaloric study of monovalent-doped manganites Pr0.6Sr0.4-xNaxMnO3 (x = 0-0.2)

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


A systematic investigation of structural, magnetic, and magnetocaloric properties is reported for a series of monovalent sodium-doped manganites Pr0.6Sr0.4-xNaxMnO3 (x = 0, 0.05, 0.1, 0.15, and 0.2). Rietveld refinements of the X-ray diffraction patterns show that all powder samples are single-phased and crystallized in the orthorhombic structure with Pnma space group. Magnetic characterization and Arrott plot confirm the second-order phase transition at Curie temperature TC decreasing from 310 K for x = 0 down to 272 K for x = 0.2. Magnetic entropy change is largest for x = 0 reaching 1.95 J kg-1 K-1 at 2 T field. This corresponds to a large relative cooling power of 102 J kg-1 . Magnetic field sensitivity of magnetic entropy change and relative cooling power are analyzed and discussed. © 2013 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,,
, Krystyna Pękała (FP / SD)
Krystyna Pękała,,
- Semiconductors Division
, M. Pekała
M. Pekała,,
, W. Cheikhrouhou-Koubaa
W. Cheikhrouhou-Koubaa,,
, A. Cheikhrouhou
A. Cheikhrouhou,,
Journal seriesJournal of Materials Science, ISSN 0022-2461
Issue year2013
Keywords in EnglishPerovskite manganites, Magnetic properties, Magnetocaloric effect, Transport properties
ASJC Classification2210 Mechanical Engineering; 2211 Mechanics of Materials; 2500 General Materials Science
Languageen angielski
Score (nominal)30
Score sourcejournalList
ScoreMinisterial score = 30.0, 01-02-2020, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 01-02-2020, ArticleFromJournal
Publication indicators Scopus Citations = 24; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.446; WoS Impact Factor: 2013 = 2.305 (2) - 2013=2.303 (5)
Citation count*5 (2015-01-02)
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