Artículo
Evidence of existence of metastable SrFe12O19 nanoparticles
Fecha de publicación:
12/2011
Editorial:
Elsevier Science
Revista:
Journal of Magnetism and Magnetic Materials
ISSN:
0304-8853
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The existence of metastable hexaferrite is reported. Synthesis of strontium hexaferrite, SrFe12O19, at 400 °C was realized under controlled oxygen atmosphere. Such technique allows obtaining of SrFe12O19 at lower temperatures than those by traditional methods (above 800 °C). Phase transformation occurred during a measurement of magnetization vs. temperature (heating up to 625 °C). The heat treatment induces a change from SrFe12O19 to γ-Fe2O3 (as the main phase), and SrFeO2.74 to Sr2Fe2O5. Together with these phase transformations, an increment in the amount of SrCO3 is detected. Magnetic study of the samples, before and after the heating, supports the structural analysis conclusions.
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Articulos(INTECIN)
Articulos de INST.D/TEC.Y CS.DE LA ING."HILARIO FERNANDEZ LONG"
Articulos de INST.D/TEC.Y CS.DE LA ING."HILARIO FERNANDEZ LONG"
Citación
Martinez Garcia, Ricardo; Bilovol, Vitaliy; Socolovsky, Leandro Martin; Pirota, K.; Evidence of existence of metastable SrFe12O19 nanoparticles; Elsevier Science; Journal of Magnetism and Magnetic Materials; 323; 23; 12-2011; 3022-3026
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