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Phonon modes of A(Co1/2Mn1/2) O3 (A=La, Nd, Dy, Ho, Yb)

✍ Scribed by F. Gao; R.A. Lewis; X.L. Wang; S.X. Dou

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 262 KB
Volume: 160
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.2001.9239

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✦ Synopsis

Phonon energies in cobaltite/manganites A(Co 1/2 Mn 1/2 )O 3 , where A is a lanthanide, have been determined by far-infrared spectroscopy. The phonon energies systematically shift and split and new modes appear as the mass of the lanthanide is increased through the series A ‫؍‬ La, Nd, Dy, Ho, Yb. The behavior of the phonon modes correlates with the magnetic properties of this series of compounds, in particular with the appearance of metamagnetism for the compounds with smaller ions on the A site.

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