Electrical properties and microstructure of magnetoresistive ( (x = 0.0, 0.05, 0.15 and 0.3)
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 s...
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| Format: | Article |
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Universiti Kebangsaan Malaysia
2006
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| Online Access: | http://journalarticle.ukm.my/3993/ http://journalarticle.ukm.my/3993/ |
| Summary: | 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. |
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