NDLI: Magnetic and magnetoresistance properties in rhombohedral perovskite-type compounds

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Magnetic and magnetoresistance properties in rhombohedral perovskite-type compounds

Content Provider	Scilit
Author	Boudaya, Chokri Laroussi, L. Dhahri, Essebti Joubert, J. C. Cheikh-Rouhou, A.
Copyright Year	1998
Description	Journal: Journal of Physics: Condensed Matter The effects of monovalent alkali metal substitution into the lanthanide sites in oxides are presented. We report structural features, magnetic and electrical properties of these materials for . The lattice symmetry of the samples is found to be rhombohedral. All the phases are ferromagnetic, with Curie temperatures strongly dependent on x, reaching a maximum around 308 K for . A sharp drop of the resistivity is observed just below the Curie temperature. The ferromagnetic-metallic to paramagnetic-semiconducting transition is explained from the suggested distribution of the cations by the double exchange of pairs at the B-sublattice. Preliminary magnetoresistance measurements (MR) on bulk ceramic samples display an MR effect of the same amplitude as in the case of the alkaline earth substituted La manganites.
Related Links	http://iopscience.iop.org/article/10.1088/0953-8984/10/33/017/pdf
Ending Page	7492
Page Count	8
Starting Page	7485
ISSN	09538984
e-ISSN	1361648X
DOI	10.1088/0953-8984/10/33/017
Journal	Journal of Physics: Condensed Matter
Issue Number	33
Volume Number	10
Language	English
Publisher	IOP Publishing
Publisher Date	1998-08-24
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics: Condensed Matter Inorganic Chemistry Condensed Matter Physics Curie Temperature Alkali Metals
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science

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