Orthorhombic mixed valence manganites; Electron magnetic resonance; Magnetic susceptibility; Curie temperature; Adiabatic polaron conductivity
Abstract :
[en] The monovalent potassium doped manganites Pr0.6Sr0.4−xKxMnO3 (x = 0.05–0.2) are characterized using the complementary magnetic susceptibility and electron resonance methods. In paramagnetic phase the temperature variations of the inverse magnetic susceptibility and the inverse intensity of resonance signal obey the Curie–Weiss law. A similarity in temperature variation of resonance signal width and the adiabatic polaron conductivity points to the polaron mechanism controlling the resonance linewidth. The low temperature limit of the pure paramagnetic phase is determined from the electron resonance spectra revealing the mixed phase spread down to the Curie temperature.
Thaljaoui, R.; Faculté des Sciences de Sfax, Université de Sfax, Tunisia > Laboratoire de Physique des Matériaux
Pękała, K.; Faculty of Physics, Warsaw University of Technology, Poland
Pękała, M.; University of Warsaw, Poland > Department of Chemistry
Boujelben, W.; Faculté des Sciences de Sfax, Université de Sfax, Tunisia > Laboratoire de Physique des Matériaux
Szydłowska, J.; University of Warsaw, Poland > Department of Chemistry
Fagnard, Jean-François ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Vanderbemden, Philippe ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Cheikhrouhou, A.; Faculté des Sciences de Sfax, Tunisia > Laboratoire de Physique des Matériaux
Language :
English
Title :
Magnetic susceptibility and electron magnetic resonance study of monovalent potassium doped manganites Pr0.6Sr0.4−xKxMnO3
MHESR - Ministère de l'Enseignement Supérieur et de la Recherche Scientifique [TN] MNiSW - Polish Ministry of Science and Higher Education [PL] WBI - Wallonie-Bruxelles International [BE]
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