Preparation of nanostructured manganites SmMnO3 and Sm0.5Sr0.5MnO3 by mechanochemical synthesis method

Autor:	F. F. Hanna, Ahmed E. Hannora
Rok vydání:	2019
Předmět:	Preparation method Magnetization Yield (engineering) Materials science Chemical engineering Particle size Electrical and Electronic Engineering Condensed Matter Physics Microstructure Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Amorphous solid
Zdroj:	Journal of Materials Science: Materials in Electronics. 30:12456-12464
ISSN:	1573-482X 0957-4522
DOI:	10.1007/s10854-019-01605-5
Popis:	The conventional ABO3 perovskite-type oxides preparation methods are either complicated or time-consuming which cannot satisfy industrial needs. Mechanochemical processing as a low cost and high yield is a promising simple method. The effects of mechanical activation time and heat treatment on the microstructure of Sm2O3, SrCO3 and Mn2O3 powders were investigated. In the early stage of mechanical treatment partially short-range order amorphous occurs, very fine material with particle size less than 100 nm was observed. SmMn2O5, SmMnO3 and Sm0.5Sr0.5MnO3 perovskites phases formation were started directly after heat treatment at 700 °C and subsequently increases with increasing temperature. SmMn2O5 thermally dissociated to SmMnO3 and MnO at 1200 °C. Magnetization of the heat-treated samples slightly varies in comparison to the as-milled.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::660a76d9d3929ef8365264c935b28727 https://doi.org/10.1007/s10854-019-01605-5 Zobrazit plný text záznamu Full text from SpringerLink