Magnetic properties of spindle-type iron fine particles obtained from hematite
| Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
|---|---|
| Data(s) |
27/05/2014
27/05/2014
01/12/2001
|
| Resumo |
Spindle-type iron fine particles have been prepared by reduction of silica-coated-hematite particles. Hydrogen reduction of the coated-hematite cores yielded uniform spindle-type iron particles, which were stabilized by surface oxidation. Narrow particle distributions are observed from TEM measurements. X-ray, Mössbauer and magnetization data are in agreement with the presence of nanosized α-Fe particles, having surface layer of spinel structure oxide. Mössbauer spectra show that the oxide surface is superparamagnetic at room temperature. © 2001 Elsevier Science B.V. All rights reserved. |
| Formato |
1933-1935 |
| Identificador |
http://dx.doi.org/10.1016/S0304-8853(00)00668-5 Journal of Magnetism and Magnetic Materials, v. 226-230, n. PART II, p. 1933-1935, 2001. 0304-8853 http://hdl.handle.net/11449/66625 10.1016/S0304-8853(00)00668-5 WOS:000170628400311 2-s2.0-33748695284 |
| Idioma(s) |
eng |
| Relação |
Journal of Magnetism and Magnetic Materials |
| Direitos |
closedAccess |
| Palavras-Chave | #Fine particles #Iron particles #Magnetic pigments #Magnetic recording media #Hematite particles #Hydrogen reduction #Iron-fines #Magnetization data #Mossbauer #Nano-sized #Oxide surface #Particle distributions #Room temperature #Silica-Coated #Spinel structure #Superparamagnetics #Surface layers #Surface oxidations #TEM #Hematite #Iron ores #Magnetic devices #Magnetic properties #Magnetic recording #Magnetism #Molybdenum oxide #Reaction kinetics #Silica #Superparamagnetism #Surface structure #Magnetic bubbles |
| Tipo |
info:eu-repo/semantics/article |
