Author
Jaromir Havlica
Bio: Jaromir Havlica is an academic researcher from Brno University of Technology. The author has contributed to research in topics: Coercivity & Raman spectroscopy. The author has an hindex of 25, co-authored 59 publications receiving 1591 citations.
Topics: Coercivity, Raman spectroscopy, Spinel, Crystallite, Nanoparticle
Papers published on a yearly basis
Papers
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161 citations
TL;DR: In this paper, a honey-mediated sol-gel combustion method was used to synthesize NiFe2O4 nanoparticles and samples annealed at 800 and 1100°C were characterized by X-ray diffraction and Raman spectroscopy.
128 citations
TL;DR: In this article, the thermal decomposition of kaolinite was studied by differential thermogravimetry (DTG) technique under non-isothermal conditions, and the apparent activation energy and frequency factor for the dehydroxylation of kaolin was evaluated by Kissinger method.
120 citations
TL;DR: In this paper, the significant role played by Nd 3+ added to cobalt ferrite in changing cation distribution and further in influencing structural and magnetic properties, was explored and reported.
120 citations
TL;DR: This work demonstrates that the grain size and cation distribution in Gd3+ doped cobalt ferrite nanoparticles synthesized by sonochemical method, is effective in controlling the structural, magnetic, and electrical properties, and can be find very promising applications.
109 citations
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01 Sep 1955
TL;DR: In this paper, the authors restrict their attention to the ferrites and a few other closely related materials, which are more closely related to anti-ferromagnetic substances than they are to ferromagnetics in which the magnetization results from the parallel alignment of all the magnetic moments present.
Abstract: In this chapter, we will restrict our attention to the ferrites and a few other closely related materials. The great interest in ferrites stems from their unique combination of a spontaneous magnetization and a high electrical resistivity. The observed magnetization results from the difference in the magnetizations of two non-equivalent sub-lattices of the magnetic ions in the crystal structure. Materials of this type should strictly be designated as “ferrimagnetic” and in some respects are more closely related to anti-ferromagnetic substances than they are to ferromagnetics in which the magnetization results from the parallel alignment of all the magnetic moments present. We shall not adhere to this special nomenclature except to emphasize effects, which are due to the existence of the sub-lattices.
2,659 citations
TL;DR: In this paper, the growth of C-S-H is the principal factor controlling the main heat evolution peak and after several days space becomes the major factor controlling hydration, but deceleration cannot be attributed to diffusion control.
705 citations
TL;DR: Spinel ferrite (SF) magnetic materials are an important class of composite metal oxides containing ferric ions and having the general structural formula M 2+ Fe 2 3+ O 4.
523 citations
TL;DR: Ferrite nanoparticles (FNPs) have attracted a great interest due to their wide applications in several areas such as biomedical, wastewater treatment, catalyst and electronic device as discussed by the authors, where the synthesis, characterisation and application of FNPs in electronic device with more emphasis on the recently published works.
Abstract: Ferrite nanoparticles (FNPs) have attracted a great interest due to their wide applications in several areas such as biomedical, wastewater treatment, catalyst and electronic device. This review focuses on the synthesis, characterisation and application of FNPs in electronic device with more emphasis on the recently published works. The most commonly used synthesis techniques along with their advantages and limitations are discussed. The available characterisation techniques and their application in electronic materials such as sensors and biosensors, energy storage, microwave device, electromagnetic interference shielding and high-density recording media are briefly reviewed.
367 citations
TL;DR: Zn0.35Fe2.65O4 nanostructure was prepared as a ferrite material by using a simple sonochemistry method and the effect of different parameters such as sonication time and power were studied.
311 citations