Title of article :
Electrical Properties and Microstructure of Magnetoresistive ( (x = 0.0, 0.05, 0.15 and 0.3) (Sifat Elektrik dan Mikrostruktur Bahan Magnetorintangan (x = 0.0, 0.05, 0.15 dan 0.3)
Author/Authors :
Ewe, L.S. Universiti Tenaga Nasional - College of Engineering, Malaysia , Hamid, N.A. Universiti Tenaga Nasional - College of Engineering, Malaysia , Abd-Shukor, R. Universiti Kebangsaan Malaysia - School of Applied Physics, Malaysia
Abstract :
The insulator-metal transition temperature, Tim of (x = 0.0, 0.05, 0.15 and 0.3) was studied during warming and cooling between 50 K to 300 K. The results showed that Tim of shifted to a higher temperature as Sr was substituted for La. Scanning electron micrographs showed that the average grain size is in the range of 0.6 µm - 1.4 µm. Grain boundaries are almost completely revealed for x = 0.3. X-Ray powder diffraction patterns showed cubic structure (space group Pm-3m) and contain no secondary phases
Keywords :
magnetoresistance , microstructure , electrical resistance
