Characterization of iron oxides: Valence states and naturally occurring polymorphs using chemical shift of X–ray FeLβ1 line by WD–XRF

PD Barman, AK Maurya, S Ghosh, A Roy… - Spectrochimica Acta Part …, 2024 - Elsevier
In X–ray spectroscopic studies of 3d transition metals, Kβ 1, 3 lines have been extensively
used for the examination of chemical states. This is because Kβ 1, 3 lines are the second …

Formation of Cobalt Ferrites Investigated by Transmission and Emission Mössbauer Spectroscopy.

V Prochazka, A Burvalova, V Vrba… - Acta Chimica …, 2020 - search.ebscohost.com
This study focuses on cobalt and iron ordering within a ferrite structure CoxFe< sub> 3-xO<
sub> 4, formed during a solid-state reaction of α-Fe< sub> 2 O< sub> 3 and CoCl< sub> 2. A …

Electronic and crystal structure analysis of the FeCrO3 oxide

OM Ozkendir - Journal of Electron Spectroscopy and Related …, 2013 - Elsevier
The magnetic and electronic behaviors of FeCrO 3 crystal were investigated by X-ray
absorption near edge (XANES) and X-ray magnetic linear dichroism (XMLD) techniques …

Coprecipitated transition metal ferrites investigated by XPS

S Diodati, S Gross - Surface Science Spectra, 2013 - pubs.aip.org
In the present contribution, four transition metal ferrites, namely the manganese perovskite
MnFeO 3 and the nickel, cobalt and zinc spinels NiFe 2 O 4, CoFe 2 O 4, and ZnFe 2 O 4 …

Spectroscopic characterization of iron ores formed in different geological environments using FTIR, XPS, Mössbauer spectroscopy and thermoanalyses

W Salama, M El Aref, R Gaupp - Spectrochimica Acta Part A: Molecular and …, 2015 - Elsevier
Application of thermoanalyses, FTIR, XPS and Mössbauer spectroscopic methods can
differentiate between iron ores formed in different geological environments. Two types of …

Structural analysis of emerging ferrite: Doped nickel zinc ferrite

R Kumar, H Kumar, RR Singh… - AIP Conference …, 2015 - pubs.aip.org
Ni0. 6-xZn0. 4CoxFe2O4 (x= 0, 0.033, 0.264) nanoparticles were synthesized by sol-gel
method and annealed at 900oC. Structural properties of all prepared samples were …

Local analysis of oxidation state of iron in oxide minerals using electron microprobe

IA Danilenko, DA Zamyatin, SL Votyakov… - AIP Conference …, 2019 - pubs.aip.org
Oxidation state of iron in chromium spinel is an important indicator of the redox conditions of
their formation and evolution. Mineral grains often heterogeneous in the Fe oxidation state …

The oxidation state and microstructural environment of transition metals (V, Co, and Ni) in magnetite: an XAFS study

X Liang, Z He, W Tan, P Liu, J Zhu, J Zhang… - Physics and Chemistry of …, 2015 - Springer
Transition metal-substituted magnetite minerals have attracted increasing attention for their
wide application in industry and environmental protection. In this study, the valence and …

Mössbauer studies of Co0. 5CdxFe2. 5− xO4 (0.0⩽ x⩽ 0.5) ferrite

S Kumar, AMM Farea, KM Batoo, CG Lee… - Physica B: Condensed …, 2008 - Elsevier
In the present work, we have studied the magnetic environment of Fe atoms in Cd-doped
cobalt ferrite using Mössbauer spectroscopy. A series of six samples with Co0. 5CdxFe2. 5 …

57Fe Mössbauer and Mo K-EXAFS investigations of MoxFe3-xO4, an interesting mixed-valent oxide system

L Bouet, P Tailhades, A Rousset, KR Kannan… - Journal of Solid State …, 1993 - Elsevier
Ferrites of the formula Mo x Fe 3-x O 4, prepared by a soft-chemistry route, show mixed
valence states of both iron and molybdenum cations. Mössbauer studies show that Fe 2+ …