Lattice effect in Pr doped LaSrMnO perovskite

✍ Scribed by Z.B. Guo; N. Zhang; W.P. Ding; W. Yang; J.R. Zhang; Y.W. Du

• Book ID: 104167006
• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 302 KB
• Volume: 100
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/s0038-1098(96)00503-0

✦ Synopsis

We have measured resistivity, magnetization and magnetoresistance in polycrystalline La0.7_xPr, Sr0,3Mn0s with fixed carrier concentration. With decreasing the average ionic radius of the La site ( rA), we found a decrease in T,, an increase in resistivity at T,, and an increase in the magnitude of the magnetoresistance. The samples show a metal-insulator transition in the high-temperature paramagnetic phase with the variation of (~4). These results demonstrate the close relationship between (rA) and the band structure.