Source: http://koreascience.or.kr/article/JAKO201528559178431.page
Timestamp: 2019-04-18 16:39:31+00:00

Document:
Kharitonskii, P.V.;Gareev, K.G.;Ionin, S.A.;Ryzhov, V.A.;Bogachev, Yu.V.;Klimenkov, B.D.;Kononova, I.E.;Moshnikov, V.A.
Colloidal particles consisted of individual nanosized magnetite grains on the surface of the silica cores were obtained by two-stage sol-gel technique. Size distribution and microstructure of the particles were analyzed using atomic force microscopy, X-ray diffraction and Nitrogen thermal desorption. Magnetic properties of the particles were studied by the method of the longitudinal nonlinear response. It has been shown that nanoparticles of magnetite have a size corresponding to a superparamagnetic state but exhibit hysteresis properties. The phenomenon was explained using the magnetostatic interaction model based on the hypothesis of iron oxide particles cluster aggregation on the silica surface.
J. Sun, S. B. Zhou, P. Hou, Y. Yang, J. Weng, X. H. Li, and M. Y. Li, Journal of Biomedical Materials Research 80A, 333 (2006).
B. D. Gullity and C. D. Graham, Introduction to Magnetic Materials, IEEE Press, WILEY (2009) p. 383.
R. W. Chantrell, In: Magnetic Hysteresis in Novel Magnetic Materials, by ed. G. C. Hadjipanayis, NATO Advanced Study Institute, Series E: Applied Sciences, vol. 338, Kluwer, Dordrecht (1997) p. 21.
Yu. V. Bogachev, K. G. Gareev, L. B. Matyushkin, V. A. Moshnokov, and A. N. Naumova, Phys. of the Sol. St. 55, 2313 (2013).
D. Shaw. Introduction to Colloid and Surface Chemistry. Elsevier (1992) p. 320.
L. R. Bickford, J. M. Brownlow, and F. R. Penoyer, Proc. IEEE 104, 238 (1957).
V. A. Ryzhov, I. V. Pleshakov, A. A. Nechitailov, N. V. Glebova, E. N. Pyatyshev, A. V. Malkova, I. A. Kisilev, and V. V. Matveev, Appl. Magn. Reson. 46, 339 (2014).
Ann. Geophys. (C.N.R.S.) 5, 99 (1949).
V. A. Ryzhov, and E. I. Zavatskii, Patent No 2507525, registered in Russia 20.02.2014.

References: V. 
 V. 

V. 
 V. 
 V. 
 V. 
 V. 

V.