Characteristics and synthesis of Cu–Ni ferrite nanopowders by coprecipitation method with ultrasound irradiation

Autor:	S. G. Doh, E.B. Kim, Jae-Hee Oh, B.H. Lee
Rok vydání:	2004
Předmět:	Materials science Coprecipitation Spinel Reflection loss Analytical chemistry Nanoparticle chemistry.chemical_element engineering.material Condensed Matter Physics Copper Grain size Electronic Optical and Magnetic Materials Nickel chemistry engineering Ferrite (magnet)
Zdroj:	Journal of Magnetism and Magnetic Materials. :2238-2240
ISSN:	0304-8853
Popis:	The Cu–Ni ferrite (Cu 1− x Ni x Fe 2 O 4 ) nanopowders were prepared using coprecipitation method with ultrasound irradiation. The Cu 1− x Ni x Fe 2 O 4 nanopowders were composed of a pure spinel phase with the grain size of 20–30 nm. The saturation magnetization of the ferrite powders were 53.1 emu/g at x =0, 73.5 emu/g at x =0.5 and 34.3 emu/g at x =1. The nanopowders showed that the reflection loss was more than –10 dB in the range from 2.5 to 5.5 GHz. The matching frequency and matching thickness of the ferrite powders had varied sensitively on the composition of x (Ni content).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dd6fbf463baa2e4a39c4b9bcff6ebc57 https://doi.org/10.1016/j.jmmm.2003.12.926 Zobrazit plný text záznamu Full Text from ScienceDirect