Zobrazeno 1 - 10
of 34
pro vyhledávání: '"L. A. Ol'khovik"'
Publikováno v:
Solid State Phenomena. 215:480-488
Magnetic bioceramics based on hydroxyapatite Ca5(PO4)3OH and particles of the M-type hexagonal (barium or calcium) ferrite (taken in proportions 5, 10, 20, 25, 40 and 50 wt % of M-ferrite) with a high bioactivity and magnetic characteristics providin
Autor:
Volodymyr Pashchenko, A. P. Kryshtal, Valerii V. Vashchenko, K. A. Mozul, M. O. Kolosov, Z. I. Sizova, Vyacheslav N. Baumer, Maksym F. Prodanov, L. P. Ol’khovik, A. N. Bludov
Publikováno v:
Low Temperature Physics. 39:365-369
Ferrimagnetic nanoparticles of CoFe2O4 about 4–16 nm in diameter were synthesized by pyrolysis of a mixture of Fe and Co acetylacetonates. The field dependences of magnetization and hysteresis loops were investigated in magnetic fields up to 4000 k
Publikováno v:
Physics of the Solid State. 55:220-224
The influence of the physicochemical state of the particle surface on the interparticle magnetic interaction in a close-packed system of single-domain microcrystals of highly anisotropic hexaferrite BaFe12O19 has been studied. The efficiency of the u
Autor:
S. V. Blazhevich, K. A. Mozul, T. G. Kuz'micheva, L. P. Ol’khovik, A. S. Kamzin, S. V. Chernikov, E. V. Shurinova
Publikováno v:
Physics of the Solid State. 53:2284-2289
Calcium hexagonal ferrite in the form of a system of nanocrystals has been synthesizes using elements of cryochemical technology for the first time. The obtained ensemble of particles corresponds to the model Stoner-Wohlfarth system according to the
Autor:
N. V. Tkachenko, S. V. Blazhevich, L. P. Ol’khovik, S. V. Chernikov, T. G. Kuz'micheva, A. S. Kamzin
Publikováno v:
Protection of Metals and Physical Chemistry of Surfaces. 47:638-644
The results of investigations aimed at creating a system of fine-grained crystals of calcium hexaferrite doped with lanthanum (barium) are presented. An integrated technological approach that involves two cycles is implemented. At the first stage, i.
Publikováno v:
Physics of the Solid State. 53:1588-1593
Magnetic bioceramics based on hydroxyapatite Ca5(PO4)3OH and particles of the M-type hexagonal (barium or calcium) ferrite with a high bioactivity and magnetic characteristics providing hyperthermal treatment of oncology diseases has been developed a
Autor:
L. P. Ol’khovik, P. S. Kalinin, N. V. Tkachenko, V. O. Shein, Z. I. Sizova, E. Ya. Levitin, E. N. Khats’ko, A. A. Koval
Publikováno v:
Low Temperature Physics. 36:226-229
A system of ultrasmall nanocrystals of zinc-substituted magnetite has been synthesized by chemical condensation. Indications of a transition of the particles into a superparamagnetic state have been found by two methods—1) measurements of the tempe
Publikováno v:
Physics of the Solid State. 52:311-316
This paper reports on a study of the field and temperature dependences of the parameters of the particle magnetic interaction in a densely packed system of nanocrystals of the highly anisotropic hexagonal ferrite BaFe12O19 with the particles distribu
Investigation of magneto-anisotropy field for system of particles with near superparamagnetic volume
Publikováno v:
Journal of Magnetism and Magnetic Materials. 320:3400-3404
We obtained the temperature dependence for low-field boundary of the anisotropy field distribution in a system of barium hexaferrite nanocrystals in the temperature range from 300 to 700 K. We treated the experimental data taking into account the inf
Publikováno v:
Technical Physics Letters. 40:4-6
Magnetic biologically active ceramics based on calcium phosphate with a content of M-type hexagonal ferrite (HF) particles varying from 10 to 50 wt % has been synthesized and characterized. It has been found that the ceramics synthesized consists of