Ruthenium doping of the layered charge ordered manganites, La0.5Sr1.5MnO4 and LaSr2Mn2O7

Authors
Ganguly, R Martin, C Maignan, A Hervieu, M Raveau, B
Citation
R. Ganguly et al., Ruthenium doping of the layered charge ordered manganites, La0.5Sr1.5MnO4 and LaSr2Mn2O7, SOL ST COMM, 120(9-10), 2001, pp. 363-368
Citations number
39
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
120
Issue
9-10
Year of publication
2001
Pages
363 - 368
Database
ISI
SICI code
0038-1098(2001)120:9-10<363:RDOTLC>2.0.ZU;2-Y
Abstract
The effects of substitution of Ru for Mn in the layered charge ordered mang anites, La0.5Sr1.5MnO4 and LaSr2Mn2O4 have been studied by X-ray diffractio n, magnetization and resistivity measurement techniques. The solubility of Ru in both La0.5Sr1.5MnO4 and LaSr2Mn2O7 is much lower than that observed f or perovskite manganites. For both the charge ordered parent compounds, the substitution of Ru destroys charge ordering (CO), induces ferromagnetic mo ments and improves the magneto-resistive properties. The possible origins o f these effects are discussed. (C) 2001 Elsevier Science Ltd. All rights re served.