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Spin–lattice correlations in Pr 0.55 Sr 0.45 MnO 3 studied by electron paramagnetic resonance
Author(s) -
Fan Jiyu,
Tong Wei,
Zhang Lei,
Shi Yangguang,
Zhu Yan,
Hu Dazhi,
Zhang Weichun,
Ying Yao,
Ling Langsheng,
Pi Li,
Zhang Yuheng
Publication year - 2012
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201248192
Subject(s) - manganite , electron paramagnetic resonance , laser linewidth , condensed matter physics , paramagnetism , polaron , lattice (music) , materials science , chemistry , nuclear magnetic resonance , electron , ferromagnetism , physics , laser , quantum mechanics , acoustics , optics
Electron paramagnetic resonance studies have been performed on the perovskite manganite Pr 0.55 Sr 0.45 MnO 3 . The various spectrum parameters including line width, effective g ‐value and double‐integrated intensities have been analyzed in detail. The changes of g ‐value and linewidth are indicative of the presence of strong spin–lattice interaction in the paramagnetic regime. The lattice distortion causes the appearance of localized carriers and the formation of a small polaron. Therefore, the large activation energy obtained from two different methods implies that a strong spin–lattice correlation exists in Pr 0.55 Sr 0.45 MnO 3 .