High Oxygen Pressures and the Stabilization of the Highest Oxidation States of Transition Metals – Mössbauer Spectroscopic Characterization of the Induced Electronic Phenomena

Gérard Demazeau; Alexey Baranov; Igor Presniakov; Alexey Sobolev

doi:10.1515/znb-2006-1209

Open Access Published by De Gruyter June 2, 2014

High Oxygen Pressures and the Stabilization of the Highest Oxidation States of Transition Metals – Mössbauer Spectroscopic Characterization of the Induced Electronic Phenomena

Gérard Demazeau , Alexey Baranov , Igor Presniakov and Alexey Sobolev

From the journal Zeitschrift für Naturforschung B

https://doi.org/10.1515/znb-2006-1209

High oxygen pressures are a fruitful tool for the stabilization of the highest formal oxidation states of transition metals (Mⁿ⁺) leading to the strongest chemical bonds; the improvement of the Mⁿ⁺-O bond covalency induces different electronic phenomena. Among the physical characterizations applied to investigate such phenomena, ⁵⁷Fe and ¹¹⁹Sn Mössbauer spectra are evaluated for studying unusual electronic configurations, orbital ordering, charge disproportionation and insulator-metal transitions in the perovskites series of ⁵⁷Fe doped RENiO₃ nickelates (RE = rare earths, Y and Tl) and ¹¹⁹Sn doped AEFeO₃ ferrates (AE = Ca, Sr).

Keywords: Oxygen Pressure; High Oxidation States; Mössbauer Spectroscopy; Electronic Configuration; Orbital Ordering; Charge Disproportionation; Insulator to Metal Transition

Received: 2006-7-3

Published Online: 2014-6-2

Published in Print: 2006-12-1

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

High Oxygen Pressures and the Stabilization of the Highest Oxidation States of Transition Metals – Mössbauer Spectroscopic Characterization of the Induced Electronic Phenomena

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