Open AccessFe/Cr doping effects on the magnetism in charge-ordered manganite La0.4Ca0.6MnO3
Author(s) -
胡妮,
刘雍,
汤五丰,
裴玲,
方鹏飞,
熊锐,
石兢
Publication year - 2014
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.63.237502
Subject(s) - manganite , antiferromagnetism , ferromagnetism , materials science , condensed matter physics , doping , dopant , charge ordering , magnetism , metal , exchange bias , charge (physics) , magnetization , magnetic field , physics , magnetic anisotropy , metallurgy , quantum mechanics
We have investigated the Fe/Cr doping effects on the magnetic property of a charge-ordered antiferromagnetic manganite La0.4Ca0.6MnO3. Magnetic measurements reveal interesting doping effects. While all the Fe-doped samples still have antiferromagnetic ground state, strong ferromagnetic tendency can be seen in the Cr-doped samples. Meanwhile, Cr-doped samples show clear metallic transport behavior, indicating an inherent double exchange mechanism responsible for the ferromagnetic metallic state. We thus propose that the magnetic exchange interaction between Mn and dopants, and the d-orbital electronic structure of Cr/Fe are essential for the distinct doping effect of Fe and Cr.