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Sonochemical Synthesis of Amorphous Yttrium Iron Oxides Embedded in Acetate Matrix and their Controlled Thermal Crystallization toward Garnet (Y3Fe5O12) and Perovskite (YFeO3) Nanostructures

SYSNO ASEP	0350463
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Sonochemical Synthesis of Amorphous Yttrium Iron Oxides Embedded in Acetate Matrix and their Controlled Thermal Crystallization toward Garnet (Y3Fe5O12) and Perovskite (YFeO3) Nanostructures
Author(s)	Pinkas, J. (CZ) Reichlová, V. (CZ) Serafimidisová, A. (CZ) Moravec, Z. (CZ) Zbořil, R. (CZ) Jančík, D. (CZ) Bezdička, Petr (UACH-T)_{SAI, RID, ORCID}
Source Title	Journal of Physical Chemistry C. - : American Chemical Society - ISSN 1932-7447 Roč. 114, č. 32 (2010), s. 13557-13564
Number of pages	8 s.
Language	eng - English
Country	US - United States
Keywords	sol-gel method ; magnetic-properties ; iron(III) oxide
Subject RIV	CA - Inorganic Chemistry
CEZ	AV0Z40320502 - UACH-T (2005-2011)
UT WOS	000280727500022
DOI	10.1021/jp104091n
Annotation	Sonolysis of stoichiometric mixtures of tris(2,4-pentanedionato)iron, Fe(acac)(3), and tris(2,4-pentanedionato)yttrium, Y(acac)(3)(H2O)(3), under Ar atmosphere in tetraglyme led to a colloidal solution from which amorphous Y-Fe-O nanopowders could be precipitated by hexane. These powders are composed of amorphous nanoparticles (3 nm) of yttrium iron(III) oxide embedded in an acetate matrix as proved by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), mass spectrometry, and Mossbauer and IR spectroscopy. The increasing amount (0, 2, 6%) of added water in the reaction mixture was found to lower the organics content in the sonochemical products. The thermally induced crystallization of the amorphous Y-Fe-O nanoparticles was studied by thermal analysis (TG/DSC), evolved gas analysis (EGA), high-temperature XRD, and Mossbauer spectroscopy.
Workplace	Institute of Inorganic Chemistry
Contact	Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
Year of Publishing	2011

Number of the records: 1