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Solution sol–gel processing and investigation of percolation threshold in la2=3ca1=3mno3:xsio2 nanocomposite.
| Content Provider | CiteSeerX |
|---|---|
| Author | Dasa, D. Chowdhurya, P. Dasb, R. N. Srivastavac, C. M. Nigamd, A. K. Bahadura, D. |
| Abstract | The composites of La2=3Ca1=3MnO3:xSiO2 (0pxp0:40) have been synthesized by sol–gel technique to derive homogeneous nanocomposites. Si4þ by virtue of its strong preference for tetrahedral site does not enter the perovskite lattice. The percolation threshold composition has been determined by resistivity measurements at around 90 % volume fraction of LCMO. A detailed electrical, magnetic and magneto-transport characterizations have been carried out for composites around the threshold composition (x 0:05; 0:10; 0:15). The magnetoresistance results at 1 T show a sharp peak at Tc and a minimum just below Tc as reported in several polycrystalline LCMO composites. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Gel Processing Percolation Threshold Xsio2 Nanocomposite Threshold Composition Sol Gel Technique Magneto-transport Characterization Sharp Peak Tetrahedral Site Percolation Threshold Composition Perovskite Lattice Magnetoresistance Result Strong Preference Homogeneous Nanocomposites Resistivity Measurement Volume Fraction Several Polycrystalline Lcmo Composite |
| Content Type | Text |