Results 81 to 90 of about 1,365,150 (188)

Ferrites nanoparticles MFe₂O₄ (M = Ni and Zn): hydrothermal synthesis and magnetic properties

Boletín de la Sociedad Española de Cerámica y Vidrio, 2008
MFe2O4 (M = Ni and Zn) nanoparticles were prepared by the hydrothermal method. The obtained samples were characterized by X-ray and electron diffraction, Scanning and Transmission Electron Microscopy and Mössbauer spectroscopy.
Pérez Mazariego, J. L., Marquina, M. L., Marquina, V., Gómez, R., Blanco Gutiérrez, V., Torralvo Fernández, M. J., Sáez Puche, R., Ridaura, R.   +7 more
doaj  

TITANOMAGNETITE ORES: MINERAL COMPOSITION AND MÖSSBAUER SPECTROSCOPY [PDF]

Минералогия, 2017
Chemical and mineral composition of ilmenite-titanomagnetite ores from Chiney, Sludinsky, Bystrinsky and Kruchininsky deposits (East Siberia) are studied and compared with those from the Panzhihua pluton in China using microprobe and X-ray diffraction ...
V.P. Lyutoev, B.I. Gongalsky, A.B. Makeyev, A.Yu. Lysyuk, L.O. Magazina, V.I. Taskaev   +5 more
doaj  

Cross‐Scale Engineering of Single‐Atom Catalysts from Local Planar Coordination to Spatial Architectures

Small, EarlyView.
This Review presents a cross‐scale framework for single‐atom catalysts, spanning in‐plane and out‐of‐plane coordination; primary coordination, secondary‐sphere interactions, through‐space microenvironments and support interfaces; individual sites and macroscopic architectures; and static design and directed dynamic reconstruction.
Dazhi Yao, Siheng Yang, Shuhao Wang, Bernt Johannessen, Cheng Tang   +4 more
wiley   +1 more source

Total X-ray Scattering, EXAFS, and Mössbauer Spectroscopy Analyses of Amorphous Ferric Arsenate and Amorphous Ferric Phosphate

, 2014
Amorphous ferric arsenate (AFA, FeAsO4•xH2O) is an important As precipitate in a range of oxic As-rich environments, especially acidic sulfide-bearing mine wastes. Its structure has been proposed to consist of small polymers of single corner-sharing FeO6
Mikutta, Christian, Schröder, Christian, Michel, F Marc   +2 more
core   +1 more source

The use of Mössbauer spectroscopy in surface studies. A methodological survey

, 2023
Mössbauer spectroscopy has been used extensively in surface studies.
Dávalos, J.Z., Marco, J.F., Gancedo, J. R., Gracia García, Mercedes   +3 more
core   +1 more source

Kinetic citrate-bicarbonate extraction of green rust fougerite and mineralogical controls by XRD and Mössbauer spectroscopy

, 2017
Kinetic citrate-bicarbonate extraction of green rust fougerite and mineralogical controls by XRD and Mössbauer spectroscopy.
Trolard, Fabienne, Klingelhöfer, Göstar, Feder, Frédéric, Bourrie, Guilhem   +3 more
core   +2 more sources

A 57fe Mössbauer spectroscopy study of spin-lattice dynamics and magnetic transitions in hexagonal multiferroic Lu0.5Sc0.5FeO3

New Journal of Physics
Hexagonal Lu _0.5 Sc _0.5 FeO _3 is a promising multiferroic candidate, yet its spin-lattice coupling and magnetic ground state are still under active debate due to difficulties in resolving subtle structural and magnetic features. Here, we employ ^57 Fe
Shixin Hu, Jijun Xue, Xiaoying Wang, Yili Cao, Hua Pang   +4 more
doaj   +1 more source

Exploring Local Structure in Iron Oxide Nanoparticles During Chemical Vapor Synthesis by in Situ and Operando X‐Ray Absorption Spectroscopy

Small Methods, EarlyView.
In situ and operando XAS is used to probe nanoparticle formation during chemical vapor synthesis, where particles form in the gas phase under high‐temperature conditions. XANES reveals dynamic changes to the oxidation states while EXAFS indicates local structural variations under in situ probing conditions.
Shradha R. Joshi, Chengjun Sun, Markus Winterer   +2 more
wiley   +1 more source

Spin relaxation in antiferromagnetic Fe–Fe dimers slowed down by anisotropic DyIII ions

Beilstein Journal of Nanotechnology, 2013
By using Mössbauer spectroscopy in combination with susceptibility measurements it was possible to identify the supertransferred hyperfine field through the oxygen bridges between DyIII and FeIII in a {Fe4Dy2} coordination cluster.
Valeriu Mereacre, Frederik Klöwer, Yanhua Lan, Rodolphe Clérac, Juliusz A. Wolny, Volker Schünemann, Christopher E. Anson, Annie K. Powell   +7 more
doaj   +1 more source

Structural and magnetic investigation of Fe-doped Mn3−xFexO4 (x ≤ 0.1) [PDF]

AIP Advances
In this study, structural and magnetic properties of Fe ion-containing manganese ferrites Mn3−xFexO4 (x ≤ 0.1) have been investigated by using x-ray diffraction, superconducting quantum interference device magnetometer, and Mössbauer spectroscopy.
Sunghyun Yoon
doaj   +1 more source