Advanced Powder Technology, volume 30, issue 9, pages 1976-1984

Silica coated hard-magnetic strontium hexaferrite nanoparticles

Kazin Pavel E
Kozlov Daniil A. 3
Petukhov Dmitrii I
Uvarov Oleg V
Sleptsova Anastasia E 1
Publication typeJournal Article
Publication date2019-09-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor5.2
ISSN09218831, 15685527
General Chemical Engineering
Mechanics of Materials
Abstract
Stable colloids of hard magnetic particles are newly developed and very promising materials. Surface functionalization of these particles remains challenging because the particles tend to aggregate during reaction due to strong magnetic interactions. Herein we report on a synthesis of strontium hexaferrite hard magnetic nanoparticles coated with silica by hydrolysis of tetraethoxysilane. As a source of hexaferrite we used stable colloid of plate-like nanoparticles with mean diameter of 40 nm and thickness of 5 nm, which were prepared by a glass-ceramic process. We have shown that to successfully coat each hexaferrite particle individually the hydrolysis conditions should provide heterogeneous nucleation of silica with rate higher than the aggregation rate of the colloidal nanoparticles. The resulting materials represent single crystal hexaferrite cores wrapped in silica shell with mean thickness of 18 and 23 nm depending on synthesis conditions. The obtained core-shell particles can be easily dispersed as stable aqueous colloids. The materials can be used as magnetic sorbents or nanocontainers and, furthermore, they are very promising colloidal building blocks for various magnetically assembled nanostructures.

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GOST Copy
Anokhin E. O. et al. Silica coated hard-magnetic strontium hexaferrite nanoparticles // Advanced Powder Technology. 2019. Vol. 30. No. 9. pp. 1976-1984.
GOST all authors (up to 50) Copy
Anokhin E. O., Trusov L. A., Kozlov D. A., Chumakov R., Kozlov M. I., Petukhov D. I., Eliseev A. A., Kazin P. E., Sleptsova A. E., Uvarov O. V., Sleptsova A. E., Uvarov O. V., Petukhov D., Kazin P. E. Silica coated hard-magnetic strontium hexaferrite nanoparticles // Advanced Powder Technology. 2019. Vol. 30. No. 9. pp. 1976-1984.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.apt.2019.06.016
UR - https://doi.org/10.1016%2Fj.apt.2019.06.016
TI - Silica coated hard-magnetic strontium hexaferrite nanoparticles
T2 - Advanced Powder Technology
AU - Anokhin, Evgeny O
AU - Trusov, Lev A.
AU - Kozlov, Daniil A.
AU - Chumakov, Ratibor
AU - Kozlov, Makarii I
AU - Petukhov, Dmitrii I
AU - Eliseev, Artem A
AU - Kazin, Pavel E
AU - Sleptsova, Anastasia E
AU - Uvarov, Oleg V
AU - Sleptsova, Anastasia E
AU - Uvarov, Oleg V.
AU - Petukhov, Dmitry
AU - Kazin, P. E.
PY - 2019
DA - 2019/09/01 00:00:00
PB - Elsevier
SP - 1976-1984
IS - 9
VL - 30
SN - 0921-8831
SN - 1568-5527
ER -
BibTex |
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BibTex Copy
@article{2019_Anokhin
author = {Evgeny O Anokhin and Lev A. Trusov and Daniil A. Kozlov and Ratibor Chumakov and Makarii I Kozlov and Dmitrii I Petukhov and Artem A Eliseev and Pavel E Kazin and Anastasia E Sleptsova and Oleg V Uvarov and Anastasia E Sleptsova and Oleg V. Uvarov and Dmitry Petukhov and P. E. Kazin},
title = {Silica coated hard-magnetic strontium hexaferrite nanoparticles},
journal = {Advanced Powder Technology},
year = {2019},
volume = {30},
publisher = {Elsevier},
month = {sep},
url = {https://doi.org/10.1016%2Fj.apt.2019.06.016},
number = {9},
pages = {1976--1984},
doi = {10.1016/j.apt.2019.06.016}
}
MLA
Cite this
MLA Copy
Anokhin, Evgeny O., et al. “Silica coated hard-magnetic strontium hexaferrite nanoparticles.” Advanced Powder Technology, vol. 30, no. 9, Sep. 2019, pp. 1976-1984. https://doi.org/10.1016%2Fj.apt.2019.06.016.
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