Open AccessThe influence of Sm doping at A site on the magnetic,electrical properties in La0.67Sr0.33MnO3
Author(s) -
刘宁,
徐素军,
郭焕银,
童伟,
张裕恒
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.912
Subject(s) - colossal magnetoresistance , materials science , ferromagnetism , doping , raman spectroscopy , condensed matter physics , magnetoresistance , manganite , spin glass , nuclear magnetic resonance , magnetic field , physics , optics , optoelectronics , quantum mechanics
In this paper, the M_T curves, ESR, Infrared and Raman spectra, ρ_T cu rves and MR_T curves of La067-xSmxSr033MnO 3 (x=000, 010, 020, 030) are studied. The experimental results ind icate that with increasing Sm content, the compound undergoes a transition from long_range ferromagnetic order to the cluster_spin glass state, and further to a ntiferromagnetic order. The variation in magnetic structure and extra magnetic c oupling caused by Sm doping lead to colossal magnetoresistance effect.