Open AccessThe influence of Gd doping at A site on the magnetic and electrical properties i n La0.7Sr0.3MnO3
Author(s) -
Ning Liu,
Guizhen Gao,
Tong Wei,
Yuheng Zhang
Publication year - 2003
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.52.3168
Subject(s) - doping , materials science , raman spectroscopy , colossal magnetoresistance , condensed matter physics , nuclear magnetic resonance , electrical resistivity and conductivity , analytical chemistry (journal) , manganite , magnetic field , ferromagnetism , physics , optics , chemistry , magnetoresistance , optoelectronics , chromatography , quantum mechanics
The M-T curves M-H curves, infrared spectra, Raman spectraρ-T curves and MR -T curves of La0.7-xGdxSr0.3MnO3 (x= 0.00, 0.10, 0.15, 0.20, 0.30 , 0.40, 0.50, 0.60, and 0.70) are studied. The experimental results indicate tha t with increasing Gd doping, the system undergoes a transition from long-range f erromagnetic order to the cluster-spin glass state and further to an antiferroma gnetic order. With heavily doping content, the transport property exhibits an ab normal behavior under magnetic background. The variation in magnetic structure a nd extra magnetic coupling caused by Gd doping lead to colossal magnetoresista nce.