Title of article
Electrical and Magnetic Properties of Bilayer Manganites La1.4Sr1.6Mn1.96TE0.04O7 (TE = Mn, Fe, Ti, Nb)
Author/Authors
Gongqi Yu، نويسنده , , Songliu Yuan، نويسنده , , Guangming Ren، نويسنده , , Juhong Miao، نويسنده , , Xun Xiao، نويسنده , , Yongqiang Wang، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
5
From page
439
To page
443
Abstract
The electrical and magnetic properties of bilayer manganites La1.4Sr1.6Mn1.96TE0.04O7 (TE = Mn, Fe, Ti, Nb) were investigated. Doping caused obvious changes in electrical and magnetic behaviors such as decrease of insulator-metal transition and magnetic transition temperatures, increase of peak resistivity, and different magnetoresistance effect. These changes had a significant degree of correlation with the valence of doped ions. From Fe, Ti to Nb doping, the effect was doubly stronger. The results could be well understood by considering the different destructions on double-exchange interaction and different influences on lattice distortion caused by Fe, Ti and Nb doping. The temperature dependence of magnetization measured at high field showed that the influence of doping was greatest near three-dimensional magnetic transition temperature of parent phase.
Keywords
bilayer manganites , double-exchange , transition temperature , magnetoresistance , rare earths
Journal title
Journal of Rare Earths
Serial Year
2007
Journal title
Journal of Rare Earths
Record number
1244753
Link To Document