Loading...
Please wait, while we are loading the content...
Similar Documents
Characterization of Doped Rare Earth Manganites , La 0 . 68-x AxCa 0 . 32 MnO 3 where A = Y , Gd ( x = 0 . 00 , 0 . 08 )
| Content Provider | Semantic Scholar |
|---|---|
| Author | Uthra, D. |
| Copyright Year | 2010 |
| Abstract | La0.68−xAxCa0.32MnO3, where A = Y, Gd (x = 0.00, 0.08) have been studied by XRD, Magnetoresistance amplitude measurement and SEM (Scanning Electron Microscopy) grain size determination, magnetic measurement of x = 0.00. The bulk sample was prepared by the solid state reaction method (standard ceramic technique) between the corresponding metallic oxides in stoichiometric ratio. We measured the magnetoresistance amplitude of these compounds in 5 T magnetic field at annealing time 8 h and 15 h in Oxygen. The room temperature resistivity and Tc were decreased after annealing at 1350C for 15 h in Oxygen. These annealing shows that the magnetoresistance ratio increases. It depends upon annealing time. These results can be explained on the basis of the weakening of the Double Exchange (DEX) interaction. PACS number: 75.30.Cr; 75.30Et; 75.30.Gw |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.bjp-bg.com/papers/bjp2008_2_135-141.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
