High resolution x-ray absorption near edge structure at the Mn K edge of manganites
- 22 March 2001
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 13 (14), 3229-3241
- https://doi.org/10.1088/0953-8984/13/14/301
Abstract
We report a systematic study of manganese perovskites, RE1-xDxMnO3 (RE = rare earth; D = Ca, Sr), by means of x-ray absorption near edge structure (XANES) spectroscopy at the Mn K edge. High resolution has been achieved by recording the intensity of the Mn Kβ fluorescence spectrum. All the samples show a unique resonance at the Mn K edge. This common feature does not depend on small changes in the local structure around the Mn atom. The XANES spectra of mixed (0<x3 and DMnO3 spectra. Therefore, Mn3+ and Mn4+ ions cannot be distinguished in intermediate RE1-xDxMnO3 compounds, either spatially or temporally. The possibility of a charge disproportionation is also considered and discussed in the paper.Keywords
This publication has 41 references indexed in Scilit:
- Two-Dimensional Charge-Transport and Spin-Valve Effect in the Layered AntiferromagnetPhysical Review Letters, 1999
- Mixed-valence manganitesAdvances in Physics, 1999
- Activism that is illegal and also ill judgedNature, 1997
- A First-Order Phase Transition Induced by a Magnetic FieldScience, 1995
- Large Magnetovolume Effect in Yttrium Doped La-Ca-Mn-O PerovskitePhysical Review Letters, 1995
- Anomalous Magnetotransport Properties of Pr1-xCaxMnO3Journal of the Physics Society Japan, 1995
- Double Exchange Alone Does Not Explain the Resistivity ofPhysical Review Letters, 1995
- Charge modulations in : Ordering of polaronsPhysical Review Letters, 1993
- Magnetoresistance measurements on the magnetic semiconductor Nd0.5Pb0.5MnO3Physica B: Condensed Matter, 1989
- Interaction between the-Shells in the Transition Metals. II. Ferromagnetic Compounds of Manganese with Perovskite StructurePhysical Review B, 1951