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Title: Charge-ordering in thin films of bilayered rare earth manganates
Authors: Parashar, S
dos Santos, A Moreira
Raju, A R
Lange, F F
Cheetham, A K
Rao, C N R
Keywords: layered compounds
thin films
electrical properties
magnetic properties
Manganese Oxides
Issue Date: Dec-2000
Publisher: Elsevier Science Ltd
Citation: International Journal Of Inorganic Materials 2(6), 651-655 (2000)
Abstract: Thin films of bilayered manganates of the formula LnSr(2)Mn(2)O(7) (Ln=rare-earth), deposited on LaAlO3(100) substrates by nebulized spray pyrolysis, show charge-ordering transitions in the resistivity data. The transition temperatures decrease from 205 K to 185 K as the rare-earth ionic radii decrease from Ln=La to Gd. While magnetic-fields up to 6 tesla have little effect on the charge-ordering transition, small electric currents prevent the onset of the charge-ordered state. Furthermore, the resistance decreases markedly with increasing current, with nonlinear behavior, in polycrystalline films deposited on Si(100) substrates. (C) 2000 Published by Elsevier Science Ltd.
Description: Restricted Access
Other Identifiers: 1466-6049
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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