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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
Effect of quenching on magnetoresistance properties in the Pr
0.5
Sr
0.5
MnO
3
perovskite manganite
Journal of Solid State Chemistry, Volume 165, No. 2, Year 2002
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Description
We report on the magnetization, resistivity and magnetoresistance (MR) measurements on polycrystalline Pr0.5Sr0.5MnO3. Quenching samples from 1400°C to room temperature in water (sample I) or in air (sample II) leads to different behaviors. Powder X-ray diffraction patterns for samples I and II could be indexed, respectively, in rhombohedral perovskite structure with R3̄c space group and in the orthorhombic one with Imma space group. Magnetization measurements show that both samples exhibit a paramagnetic-ferromagnetic transition at 280 K (sample I) and 265 K (sample II). At low temperature, sample I presents a ferromagnetic spin-canted state, while sample II behaves as an antiferromagnet below 160 K. Resistivity and magnetoresistance studies show a net difference as a function of the quenching conditions. © 2002 Elsevier Science (USA).
Authors & Co-Authors
Boujelben, Wahiba
Tunisia, Sfax
Faculté Des Sciences de Sfax
Ellouze, M.
Tunisia, Sfax
Faculté Des Sciences de Sfax
Cheikh-Rouhou, Abdelwaheb
Tunisia, Sfax
Faculté Des Sciences de Sfax
Pierre, Jacques
France, Grenoble
Institut Néel
Joubert, Jean Claude
France, Paris
Cnrs Centre National de la Recherche Scientifique
Statistics
Citations: 18
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1006/jssc.2002.9555
ISSN:
00224596
Research Areas
Environmental