Preparation and characterization of amorphous nanometre sized Fe3O4powder

Autor:	Aharon Gedanken, Ruslan Prozorov, X. Cao, Israel Felner, G. Katabi, Yu. Koltypin
Rok vydání:	1997
Předmět:	Magnetization Crystallography Materials science Differential scanning calorimetry Transmission electron microscopy Mössbauer spectroscopy X-ray crystallography Materials Chemistry Analytical chemistry Nanometre General Chemistry Superparamagnetism Amorphous solid
Zdroj:	Journal of Materials Chemistry. 7:1007-1009
ISSN:	1364-5501 0959-9428
DOI:	10.1039/a606739e
Popis:	A method for the preparation of amorphous Fe 3 O 4 powder with a particle size of ca. 25 nm is reported. Amorphous Fe 3 O 4 powder can be simply synthesized by slowly exposing amorphous Fe powder to the air. The amorphous properties of Fe 3 O 4 nanoparticles were characterized by X-ray diffraction, Mossbauer spectroscopy, transmission electron micrography, differential scanning calorimetry and quantum design SQUID magnetization measurements. This amorphous Fe 3 O 4 powder is superparamagnetic and its magnetization at room temperature is very low (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0965646e2620d7d3b91ff96426a1f597 https://doi.org/10.1039/a606739e Zobrazit plný text záznamu