Abnormality of Magnetic Behavior and Resistivity of La0.7-xDyxSr0.3MnO3 (0.00 ≤ x ≤ 0.30) System at Low Temperature
- Manganite, Abnormality of resistivity at low temperature, Lattice effect, Extra magnetic coupling /
Abstract: By measuring M-T curves, ρ-T curves and MR-T curves of the samples under different temperatures, the influence of Dy doping (0.00 ≤ x ≤0.30) on the magnetic and electric properties of La0.7-xDyxSr0.3MnO3 has been studied. The experimental results show that, with the increase of the Dy content, the system undergoes a transition from long range ferromagnetic order to the cluster-spin glass state and further to antiferromagnetic order. For the samples with x=0.20 and 0.30, their magnetic behaviors are abnormal at low temperature, and their resistivities at low temperature have a minimum value. These peculiar phenomena not only come from the lattice effect induced by doping, but also from extra magnetic coupling induced by doping.
|Citation:||Ning Liu, Guo-qing Yan, Su-jun Xu, Wei Tong. Abnormality of Magnetic Behavior and Resistivity of La0.7-xDyxSr0.3MnO3 (0.00 ≤ x ≤ 0.30) System at Low Temperature[J]. Chinese Journal of Chemical Physics , 2006, 19(2): 173-177. doi: 10.1360/cjcp2006.19(2).173.5|