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
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

Abnormality of Magnetic Behavior and Resistivity of La0.7-xDyxSr0.3MnO3 (0.00 ≤ x ≤ 0.30) System at Low Temperature

doi: 10.1360/cjcp2006.19(2).173.5
Funds:  the National Nature Science Foundation of China (No. 19934003) and the State Key Project of Fundamental Research of China (No.001CB610604) and the Item of Nature Science Research of Anhui (No. 2001kj244)
  • 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.
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Abnormality of Magnetic Behavior and Resistivity of La0.7-xDyxSr0.3MnO3 (0.00 ≤ x ≤ 0.30) System at Low Temperature

doi: 10.1360/cjcp2006.19(2).173.5
Funds:  the National Nature Science Foundation of China (No. 19934003) and the State Key Project of Fundamental Research of China (No.001CB610604) and the Item of Nature Science Research of Anhui (No. 2001kj244)

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.

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
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

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