Journal article
Transport properties and magnetoresistance of nano-polycrystalline La0.7Sr0.3MnO3-δ
Abstract
The resistivity and magnetoresistance of bulk polycrystalline La0.7Sr0.3MnO3-δ, fabricated to produce nanoscale grains sintered at different temperatures, have been investigated as functions of temperature. With decreasing temperature below room temperature the resistivity (ρ) exhibits a maximum near 250K, below which it shows “metallic" behaviour, i.e. ρ∝T2 in the temperature range from 50K to 170K. However, ρ subsequentlyexhibits a minimum …
Authors
Xi Li; Yang Xiao-Lin; Li Cheng-Xian; Ge Shi-Hui
Journal
Acta Physica Sinica, Vol. 55, No. 2,
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Publication Date
2006
DOI
10.7498/aps.55.854
ISSN
1000-3290