Results 61 to 70 of about 25,986 (177)

Detection of high-valent iron species in alloyed oxidic cobaltates for catalysing the oxygen evolution reaction

Nature Communications, 2021
The capturing of high valent iron in a catalytic reaction is important but difficult task. Here, the authors report identification of a high-valent Fe(IV)-species with different spectroscopic tools such as Mössbauer spectroscopy and X-ray absorption ...
Nancy Li, Ryan G. Hadt, Dugan Hayes, Lin X. Chen, Daniel G. Nocera   +4 more
doaj   +1 more source

Magnetoresistance Effects in SrFeO(3-x): Dependence on Phase Composition and Relation to Magnetic and Charge Order

, 2005
Single crystals of iron(IV) rich oxides SrFeO(3-x) with controlled oxygen content have been studied by Moessbauer spectroscopy, magnetometry, magnetotransport measurements, Raman spectroscopy, and infrared ellipsometry in order to relate the large ...
A. Lebon, A. Maljuk, A. V. Boris, B. Keimer, C. Bernhard, C. Bernhard, C. T. Lin, C. Ulrich, H. Oda, P. Adler, T. Takeda, V. Damljanović   +11 more
core   +2 more sources

Renormalized field theory for the static crossover in dipolar ferromagnets [PDF]

, 1988
A field theoretical description for the static crossover in dipolar ferromagnets is presented. New non leading critical exponents for the longitudinal static susceptibility are identified and the existence and magnitude of the dip in the effective ...
Frey, Erwin, Schwabl, F.
core   +4 more sources

Formation of Cobalt Ferrites Investigated by Transmission and Emission Mössbauer Spectroscopy

Acta Chimica Slovenica, 2020
This study focuses on cobalt and iron ordering within a ferrite structure CoxFe3-xO4, formed during a solid-state reaction of α-Fe2O3 and CoCl2. A unique combination of transmission and emission Mössbauer spectroscopy was employed to inspect selectively ...
Vit Prochazka, Anezka Burvalova, Vlastimil Vrba, Josef Kopp, Petr Novák   +4 more
doaj   +1 more source

The Debye temperature of sigma-phase Fe-Mo compounds as determined with M\"ossbauer spectroscopy

, 2012
The Debye temperature, T_D, of sigma-phase Fe_(100-x)Mo_x compounds with 47 < x < 56.7 was determined from the temperature dependence of the centre shift of M\"ossbauer spectra recorded in the temperature range of 80 - 300 K. Its compositional dependence
Cieslak, J., Dubiel, S. M.
core   +1 more source

Elaboration and characterization of Fe1–xO thin films sputter deposited from magnetite target [PDF]

, 2007
Majority of the authors report elaboration of iron oxide thin films by reactive magnetron sputtering from an iron target with Ar–O2 gas mixture. Instead of using the reactive sputtering of a metallic target we report here the preparation of Fe1–xOthin ...
B. Mauvernay, Ben Amor, C. Bonningue, Capdeville, Despax, Dimitrov, Dimitrov, E. De Grave, Fjellvag, Gu, Hoshi, Joong Kim, Ju, Kim, L. Presmanes, Long, Mei, Mugnier, Pan, Park, Peng, Ph. Tailhades, S. Capdeville, Stloen, Tokumitsu, V.G. de Resende, Vink, Wilkinson   +27 more
core   +5 more sources

57Fe Mossbauer spectroscopy and magnetic measurements of oxygen deficient LaFeAsO

, 2012
We report on the magnetic behavior of oxygen deficient LaFeAsO1-x (x-0.10) compound, prepared by one-step synthesis, which crystallizes in the tetragonal (S.G. P4/nmm) structure at room temperature. Resistivity measurements show a strong anomaly near 150
Arpita Vajpayee, Awana V P S, Awana V P S, Baskaran G, Chen G F Li Z Wu D Dong J Li G Hu W Z Zheng P Luo J L Wang N L, Felner I Nowik I Tsindlekht M I Ren Z-A Shen X-L Che G-C Zhao Z-X, H Kishan, Israel Felner, Israel Nowik, Kitao S, Klauss H H, Lu W Yang J Dong X L Ren Z A chi G C Zhao Z X, Ren Z-A Yang J Lu W Yi W Shen X-L Li Z-C Chi G-C Dong X-L Sun L-L Zhou F Zhao Z-X, Sefat A S, Senatore C Wu G Liu R H Chen X H Flukiger R, Singh D J Du M H, Tegel M Schellenberg I Pottgen R Johrendt D, V P S Awana, Yin Z P Lebègue S Han M J Neal B Savrasov S Y Pickett W E   +18 more
core   +1 more source

Modulated magnetic structure of Fe3PO7 as seen by 57Fe M\"ossbauer spectroscopy

, 2018
The paper reports new results of the 57Fe M\"ossbauer measurements on Fe3PO4O3 powder sample recorded at various temperatures including the point of magnetic phase transition TN ~ 163K.
Akulenko, A. A., Glazkova, I. S., Pankratov, D. A., Presniakov, I. A., Sobolev, A. V.   +4 more
core   +1 more source

Fe(II)/Chlorine‐Driven Advanced Oxidation of Textile Dyes in a Tubular Microreactor: Continuous‐Flow Performance and Matrix Effects

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The Fe(II)/chlorine system has emerged as a promising advanced oxidation technology for water treatment, yet its application in continuous‐flow systems remains unexplored. This study presents the first comprehensive investigation of the Fe(II)/chlorine process in a tubular microreactor, a setup that significantly enhances mass transfer and ...
Abderrahmane Talbi, Slimane Merouani, Aissa Dehane   +2 more
wiley   +1 more source

Characterization of an ASTM A335 P91 ferritic-martensitic steel after continuous cooling cycles at moderate rates

Journal of Materials Research and Technology, 2019
In this contribution some aspects of the behavior of the ASTM A335 P91 (9Cr1MoVNbN) steel subjected to continuous cooling cycles under fixed austenitization conditions are studied.
Denise Alejandra Carrizo, Jorge Ignacio Besoky, María Luppo, Claudio Danon, Cinthia Paula Ramos   +4 more
doaj   +1 more source