DOI: 10.1111/j.1151-2916.2002.tb00433.x. Novel Synthesis of Silica‐Coated Ferrite Nanoparticles Prepared Using Water‐in‐Oil Microemulsion

Novel Synthesis of Silica‐Coated Ferrite Nanoparticles Prepared Using Water‐in‐Oil Microemulsion

10.1111/j.1151-2916.2002.tb00433.x

Crossref journal-article

Wiley

Journal of the American Ceramic Society (311)

Abstract

Ferrite nanoparticles (magnetite (Fe3O4) and cobalt‐ferrite (CoxFe3−xO4)) coated with silica (SiO2) were prepared using water‐in‐oil microemulsion of a polyoxyethylen(15)cetylether/cyclohexene system. Observation via transmission electron microscopy revealed that the ferrite nanoparticles were located nearly at the center of spherical SiO2 particles. The sizes of Fe3O4 and CoxFe3−xO4 nanoparticles were in the range of 8–12 nm and 10–14 nm, respectively, and the thickness of the SiO2 layer was ∼14.0 nm. The solid solution of cobalt ions into Fe3O4 to form CoxFe3−xO4 nanoparticles led to an increase in the coercivity of the SiO2‐coated ferrite nanoparticles. The coercivity increased with increasing amounts of added cobalt, obtaining a maximum value of 780 Oe around a Co/Fe ratio of 0.3–0.4.

Bibliography

Tago, T., Hatsuta, T., Miyajima, K., Kishida, M., Tashiro, S., & Wakabayashi, K. (2002). Novel Synthesis of SilicaâCoated Ferrite Nanoparticles Prepared Using WaterâinâOil Microemulsion. Journal of the American Ceramic Society, 85(9), 2188â2194. Portico.

Authors 6

Teruoki Tago (first)
Takatoshi Hatsuta (additional)
Kanta Miyajima (additional)
Masahiro Kishida (additional)
Shizuka Tashiro (additional)
Katsuhiko Wakabayashi (additional)

References 31 Referenced 121

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T.Tago R.Nagase T.Hatsuta M.Kishida andK.Wakabayashi “Preparation of Silica‐Coated Magnetic Nanoparticles Using Water‐in‐Oil Microemulsion”: p.237in8th Proceedings of the International Conference on Ferrites. Japanese Society of Powder and Powder Metallurgy Tokyo Japan 2000.
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Dates

Type	When
Created	18 years, 6 months ago (Feb. 13, 2007, 9:54 a.m.)
Deposited	1 year, 9 months ago (Oct. 31, 2023, 5:23 p.m.)
Indexed	9 months ago (Nov. 19, 2024, 11:04 a.m.)
Issued	22 years, 11 months ago (Sept. 1, 2002)
Published	22 years, 11 months ago (Sept. 1, 2002)
Published Online	20 years, 8 months ago (Dec. 20, 2004)
Published Print	22 years, 11 months ago (Sept. 1, 2002)

Funders 0

None

BibTeX

@article{Tago_2002, title={Novel Synthesis of Silica‐Coated Ferrite Nanoparticles Prepared Using Water‐in‐Oil Microemulsion}, volume={85}, ISSN={1551-2916}, url={http://dx.doi.org/10.1111/j.1151-2916.2002.tb00433.x}, DOI={10.1111/j.1151-2916.2002.tb00433.x}, number={9}, journal={Journal of the American Ceramic Society}, publisher={Wiley}, author={Tago, Teruoki and Hatsuta, Takatoshi and Miyajima, Kanta and Kishida, Masahiro and Tashiro, Shizuka and Wakabayashi, Katsuhiko}, year={2002}, month=sep, pages={2188–2194} }

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