Bibliographic Details
| Title: |
Structural and magnetic properties of hole-doped(La0.56Ce0.14)Sr0.30MnO3 perovskite |
| Authors: |
Kallel, Nabil1 nabil.kallel@fsm.rnu.tn, Kallel, Sami1, Peña, Octavio2, Oumezzine, Mohamed1 |
| Source: |
Solid State Sciences. Aug2009, Vol. 11 Issue 8, p1494-1498. 5p. |
| Subjects: |
Perovskite, Magnetic properties, Molecular structure, Holes (Electron deficiencies), Semiconductor doping, Solid state chemistry, Cerium oxides, Rietveld refinement |
| Abstract: |
Abstract: We have successfully prepared a single-phase Ce-doped sample (La0.56Ce0.14)Sr0.30MnO3 by a solid-state route, without CeO2 oxide segregation. Compared to the undoped sample La0.70Sr0.30MnO3, the structure remains hexagonal with space group without a large variation of the cell parameters and volume. The thermal variation of the magnetization shows that the Ce-doped sample exhibits a ferromagnetic to paramagnetic transition at 357K and an anti-ferromagnetic coupling below 100K between the ferromagnetic Mn moments and the Ce moments and thus form a ferrimagnetic ground state. Comparing our results to those of the literature, we can suggest that the cerium ions are in a trivalent state (Ce3+) and the anomalous behaviour attributed to a Kondo-like effect. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
