Journal ArticleDOI
A powder neutron diffraction investigation of vacancy ordering and covalence in γ-Fe2O3
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TLDR
In this article, profile refinement of powder neutron diffraction data has been used to examine the structure of γ-Fe 2 O 3 and to evaluate covalence effects for octahedral and tetrahedral Fe 3+ ions within the structure.About:
This article is published in Journal of Solid State Chemistry.The article was published on 1983-10-01. It has received 209 citations till now. The article focuses on the topics: Neutron diffraction & Vacancy defect.read more
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Iron oxide surfaces
TL;DR: In this paper, a review of the current status of knowledge regarding the surfaces of the iron oxides, magnetite (Fe3O4), maghemite (γ-Fe2O3), haematite (α-Fe 2O3, and wustite (fe1−xO) is reviewed.
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Hollow iron oxide nanoparticles for application in lithium ion batteries.
Bonil Koo,Hui Xiong,Michael Slater,Vitali B. Prakapenka,Mahalingam Balasubramanian,Paul Podsiadlo,Christopher S. Johnson,Tijana Rajh,Elena V. Shevchenko +8 more
TL;DR: In situ structural transformation of hollow iron oxide nanoparticles by synchrotron X-ray absorption and diffraction techniques provided clear understanding of the lithium intercalation processes during electrochemical cycling.
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Coupling Agent Effect on Magnetic Properties of Functionalized Magnetite-Based Nanoparticles
T. J. Daou,Jean-Marc Greneche,Geneviève Pourroy,Saïwan Buathong,Alain Derory,Corinne Ulhaq-Bouillet,Bertrand Donnio,Daniel Guillon,Sylvie Begin-Colin +8 more
TL;DR: In this paper, the effect of surface inorganic−organic interactions on magnetic and structural properties of iron oxide magnetic nanoparticles functionalized by lipophilic stilbene molecules has been investigated.
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X-ray-absorption spectroscopy at the Fe L 2 , 3 threshold in iron oxides
TL;DR: The influence of local order around the iron site on Fe 2p x-ray-absorption spectra is studied, and the nature of insulating gap for each compound is deduced.
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Morphology and Electronic Structure of the Oxide Shell on the Surface of Iron Nanoparticles
TL;DR: The results suggest that the coordination configuration in the oxide shell on Fe nanoparticles is defective as compared to that of their bulk counterparts.
References
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Journal ArticleDOI
A profile refinement method for nuclear and magnetic structures
TL;DR: In this paper, a structure refinement method was described which does not use integrated neutron powder intensities, single or overlapping, but employs directly the profile intensities obtained from step-scanning measurements of the powder diagram.
Journal ArticleDOI
Noncollinear Spin Arrangement in Ultrafine Ferrimagnetic Crystallites
TL;DR: In this article, it was shown that the spin configuration differs from the N\'eel type found in large crystallites, and it was proposed that the ions in the surface layer are inclined at various angles to the direction of the net moment.
Journal ArticleDOI
Hartree–Fock atomic scattering factors for the iron transition series
R.E. Watson,A.J. Freeman +1 more
TL;DR: In this article, the Hartree-Fock wave function was used to determine the spatial symmetry of the outer electrons of the argon core, and the question of the constancy of the core was discussed quantitutively.
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Influence of Crystallite Size on the Magnetic Properties of Acicular γ‐Fe2O3 Particles
TL;DR: In this paper, the average size of acicular γ-Fe2O3 particles of the type used in magnetic recording tapes was determined from x-ray line broadening, and all magnetic properties showed a strong dependence on average crystallite size.