Title of article
Evidences for non-equivalent centers in mixed chain nickelates (NdxY1−x)2BaNiO5
Author/Authors
M.V. Narozhnyy، نويسنده , , S.A. Klimin، نويسنده , , E.A. Popova، نويسنده , , G. Dhalenne and A. Revcolevschi ، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
4
From page
603
To page
606
Abstract
Absorption spectra of the mixed chain nickelates (NdxY1−x)2BaNiO5 were measured for different x. Experimentally two evidences for the presence of non-equivalent rare-earth centers (NEREC) were found. First, the linewidths show a very strong broadening for x when the calculated distribution over NEREC is wide. Second, a complicated lineshape of the lowest-frequency line in the region of the 4I9/2→4I11/2 electronic transition is in good agreement with statistics of NEREC. A simple modeling for the line broadening due to NEREC is suggested.
Keywords
Haldane chains , non-equivalent rare-earth centers , Fourier-transform spectroscopy
Journal title
Journal of Rare Earths
Serial Year
2009
Journal title
Journal of Rare Earths
Record number
1245584
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