The praseodymium de5ciency e4ects on the structural, magnetic, and electrical properties of the lacunar perovskite manganite oxides Pr 0.7ุx ) x Sr 0.3 MnO 3 (04x40.23) have been investigated. This study is of great interest because it gives more information on the role of the Mn cation oxidation de
The effect of calcium and praseodymium deficiencies on the physical properties of Pr0.5Ca0.5MnO3
โ Scribed by I. Walha; A. Cheikhrouhou
- Publisher
- Elsevier
- Year
- 2009
- Tongue
- English
- Weight
- 860 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1875-3892
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We report on the magnetization, resistivity and magnetoresistance (MR) measurements on polycrystalline Pr 0.5 Sr 0.5 MnO 3 . Quenching samples from 14003C to room temperature in water (sample I) or in air (sample II) leads to di4erent behaviors. Powder X-ray di4raction patterns for samples I and II
The perovskite-type La 0.5 Ca 0.5-x Na x MnO 3 (0.05 x 0.2) ceramic samples were prepared using the solid-state reaction at high temperature. The X-ray powder diffraction refinement by means of the Rietveld technique reveals that all our samples are single phase and crystallize in the orthorhombic s