Results 71 to 80 of about 161 (97)

Stable colloidal solutions of strontium hexaferrite hard magnetic nanoparticles

Chem. Commun., 2014
Herein we demonstrate an approach to prepare a colloidal solution of strontium hexaferrite via a glass-ceramic route. The as obtained colloids are stable and resistive to aggregation or sedimentation. They reveal outstanding magnetic and magneto-optical properties because of their platelet-like anisotropic shape and high permanent magnetic moment.
Trusov, L., Vasiliev, A., Lukatskaya, M., Zaytsev, D., Jansen, M., Kazin, P.   +5 more
openaire   +3 more sources

Self-propagating high-temperature synthesis of strontium hexaferrite

Combustion, Explosion, and Shock Waves, 1993
We study the relations governing combustion front propagation and the influence of certain factors (relationship of the starting components, relative density of the specimens being synthesized, oxygen gage pressure, and iron powder particle size) on the temperature and velocity of combustion in the systems Fe−Fe2O3−SrO2−O2 and Fe−Fe2O3−SrCO3−O2.
A. V. Komarov, P. B. Avakyan, M. D. Nersesyan   +2 more
openaire   +1 more source

Magneto-Structural Characterization of Strontium Substituted Lead Hexaferrite

Journal of Superconductivity and Novel Magnetism, 2012
In this work, the magnetic and structural properties of the system Pb1−x Sr x Fe12O19 (x=0.1,0.3,0.5,0.7 and 0.9) are reported. The samples were prepared by the traditional ceramic method. All the compounds are isostructural with the strontium hexaferrite (SrFe12O19).
A. L. Guerrero-Serrano, S. A. Palomares-Sánchez, M. Mirabal-García, J. A. Matutes-Aquino   +3 more
openaire   +1 more source

Structural inhomogeneity and magnetic properties of strontium hexaferrites

Powder Metallurgy and Metal Ceramics, 1995
The clustered inhomogeneity observed in ferromagnetic materials deepens our concepts of the actual structure of solids and opens new possibilities for controlling their properties. These investigations were made for the purpose of establishment of the relationship between clusterization and magnetic properties of SrO-nFe{sub 2}O{sub 3}, where 5.4 < n <
V. P. Pashchenko, Z. A. Samoilenko, V. M. Vintonyak, V. I. Ivanova, E. I. Pushenko, I. F. Klochai, I. F. Gribanov   +6 more
openaire   +1 more source

Strontium hexaferrite (SrFe12O19) based composites for hyperthermia applications

Journal of Magnetism and Magnetic Materials, 2013
Mixed phase composites of SrFe12O19/MgFe2O4/ZrO2 were prepared via the citrate gel technique as potential candidate materials for magnetic hyperthermia. Structural and magnetic properties of the samples were studied using powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and a vibrating sample magnetometer. XRD and FE-
Amin Ur Rashid, Paul Southern, Jawwad A. Darr, Saifullah Awan, Sadia Manzoor   +4 more
openaire   +1 more source

Characterisation of strontium hexaferrite for millimeter waves applications

IEEE Transactions on Magnetics, 1986
The linewidth of magnetic and dielectric resonances have been measured at 94 GHz in the 77 K - 300 K temperature range on flux grown SrFe 12 O 19 single crystals. These results and the variation of the anisotropy field versus temperature are presented along with a description of the measurements techniques.
M. Labeyrie, J. Mage, T. Robinson
openaire   +1 more source

A Study of Pr‐Substituted Strontium Hexaferrite by Hydrothermal Synthesis.

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
J.F. Wang, C.B. Ponton, I.R. Harris
openaire   +1 more source

Multifunctional Polypyrrole/Strontium Hexaferrite Composite Microspheres: Preparation, Characterization, and Properties

The Journal of Physical Chemistry B, 2009
Polypyrrole (PPY)/SrFe12O19 composites with tunable electrical and magnetic properties were synthesized by in situ polymerization of pyrrole in the presence of SrFe12O19 particles. The structure of PPY/SrFe12O19 composites was characterized by means of Fourier transform infrared spectroscopy and X-ray diffraction.
Jing, Jiang, Lunhong, Ai, Liangchao, Li
openaire   +2 more sources

Low‐Temperature Hydrothermal Synthesis of Ultrafine Strontium Hexaferrite Nanoparticles

European Journal of Inorganic Chemistry, 2011
AbstractUltrafine strontium hexaferrite (SrFe12O19) nanoparticles have been synthesized by the hydrothermal treatment of an appropriate suspension of Sr and Fe hydroxides in the presence of a large excess of OH– at temperatures between 130 and 170 °C.
Darinka Primc, Miha Drofenik, Darko Makovec   +2 more
openaire   +1 more source

Magnetic microstructure in strontium hexaferrites with correlated nonisomorphous substitutions

Physics of the Solid State, 1997
The influence of the correlated nonisomorphous substitution of Mn2+ and Ti4+ ions for Fe3+ ions in M-type hexaferrites on the shaping of their magnetic microstructure is studied. Conclusions regarding the possibility of the distribution of the substituent cations in the structure and their influence on the principal magnetic properties of the ...
Bashkirov S., Liberman A., Zaripova L., Valiullin A.   +3 more
openaire   +3 more sources