Investigation of chemical and grain-boundary effects in the Zr-doped La2/3Sr1/3ZrxMn1-xO3 manganites

Autor(en): Tetean, R.
Deac, I. G.
Burzo, E.
Takacs, A.
Neumann, M.
Stichwörter: electrical resistivity; magnetization; magnetoresistance; Materials Science; Materials Science, Multidisciplinary; OXIDES; perovskites; Physics; Physics, Condensed Matter; X-ray photoelectron spectroscopy
Erscheinungsdatum: 2007
Herausgeber: ELSEVIER
Journal: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volumen: 310
Ausgabe: 2, 3
Startseite: E658-E660
Zusammenfassung: 
We present a detailed study of the polycrystalline perovskite manganites La(2/3)Sr(1/3)ZrxMn(1-x)O3 (x < 0.3) at low temperatures and high magnetic fields, by means of electrical resistance, magnetization and X-ray photoelectron spectroscopy ( XPS). All the samples show large negative magnetoresistance behavior. The data suggest that the magnetoresistance of the system is dominated by intergranular effects, but some intrinsic effects are also to be considered. (C) 2006 Elsevier B.V. All rights reserved.
ISSN: 03048853
DOI: 10.1016/j.jmmm.2006.10.912

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