Results 171 to 180 of about 1,769 (198)

Magnetic and Dielectric Response of CoFe2O4-SrFe12O19 Nanocomposites

Journal of Superconductivity and Novel Magnetism, 2021
Soft magnetic phase cobalt ferrite (CoFe2O4) and hard magnetic phase strontium ferrite (SrFe12O19) were synthesized by co-precipitation route. Nanocomposite S:H-1:2 was prepared comprising soft (S) and hard (H) phases in the weight ratio of 1:2, higher ratio corresponding to SrFe12O19.
Kalyani Dhabekar, K. Mohan Kant
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SrFe12O19 as an impurity in perovskite-type ferrites

Materials Letters, 2021
Abstract A decrease of oxygen content in SrFe12O19 and its subsequent decomposition were studied at 750–950 °C by coulometric titration. The lowest oxygen content that strontium hexaferrite endures is about 18.5. Further oxygen removal from oxide lead to its reductive decomposition with the formation of Fe3O4 and Sr4Fe6O13+δ.
I.V. Shamsutov, O.V. Merkulov, M.V. Patrakeev   +2 more
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Hexagonal SrFe12O19 ferrite with high saturation magnetization

Ceramics International, 2018
Abstract Hexagonal M-type ferrites with a nominal composition SrFe12O19 (SrM) were prepared via a ceramic route using acicular goethite (α-FeOOH) nanopowders obtained at different hydrothermal temperature as one of the starting materials, and their structural and magnetic properties were investigated. The best hydrothermal temperature of α-FeOOH used
Rui Sun, Xin Li, Ailin Xia, Shubing Su, Chuangui Jin   +4 more
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Solvothermal Synthesis of Pure SrFe12O19 Hexaferrite Nanoplatelets

Journal of Superconductivity and Novel Magnetism, 2013
Strontium hexagonal ferrite, SrFe12O19, with platelet-like structure was synthesized directly by hydrothermal method without any calcination process. The product was characterized by Scanning electron (SEM), X-ray powder diffraction (XRD), Fouier transform infrared spectroscopy (FT-IR), and vibrating sample magnetometry (VSM) techniques. The optimum Fe/
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Synthesis and Characterization of Cu–Mn Substituted SrFe12O19 Hexaferrites

Journal of Inorganic and Organometallic Polymers and Materials, 2017
In this study, bimetallic (Cu–Mn) substituted SrFe12O19 hexaferrites [Sr1−2xMnxCuxFe12O19 (0.0 ≤ x ≤ 0.1)] were synthesized via sol–gel auto-combustion approach. The effect of bimetallic substitution on structure, morphology and magnetism of SrFe12O19 was investigated. SEM images divulge the nano-size of the prepared products with speck morphology.
Amir, Md., Baykal, Abdulhadi, Güngüneş, Hakan, Asiri, Sarah Mousa, Ercan, İsmail, Shirsath, Sagar E.   +5 more
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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
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Sublattice magnetizations and textures in SrFe12O19 ceramic compacts

Journal of Applied Physics, 1978
57Fe Mössbauer spectroscopy has been used to determine the degree of orientation and magnetic hyperfine fields in SrFe12O19 ceramic compacts with known bulk magnetic properties. The controversy regarding the assignment of the spectrum to the different sites has been resolved and at 300 K the hyperfine fields for the 4f2, 4f1, 2a, 12k, and 2b sites are ...
R. H. Vogel, B. J. Evans
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SrFe12O19 prepared by the proteic sol–gel process

Physica B: Condensed Matter, 2006
Abstract Powders of strontium hexaferrite (SrFe 12 O 19 ) were prepared by the proteic sol–gel process using coconut water as a precursor. X-ray diffraction (XRD) measurement showed the formation of SrFe 12 O 19 with a small amount of the hematite for the sample calcined at 1000 °C with Fe/Sr=12. Rietveld refinement disclosed that this sample had 87.
P.C.A. Brito, R.F. Gomes, J.G.S. Duque, M.A. Macêdo   +3 more
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Высокоспиновое состояние ионов Fe в гексаферритах SrFe12O19

2023
Работа выполнена при поддержке РФФИ № 20-02-00541 А.
Kantur, I. E., Yarmoshenko, Yu. M., Dolgikh, V. E., Kuznetsova, T. V., Zhivulin, V. E., Vinnik, D. A., Долгих, В. E.   +6 more
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Påvirkning af pressebetingelser for SrFe12O19 nanopartikler

2015
The influence of pressing conditions on SrFe12O19 nano-particlesAnna Zink Mortensen, Marian Stingaciu, Mogens ChristensenAarhus UniversityPermanent magnets have great importance for many technological applications. Today researchers try making new and cheap magnets without rare earth elements. Strontium hexaferrite, SrFe12O19, is an important permanent
Mortensen, Anna, Stingaciu, Marian, Christensen, Mogens   +2 more
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