نتایج جستجو برای: type hexaferrite
تعداد نتایج: 1342251 فیلتر نتایج به سال:
In this paper, a microstrip patch mounted on high impedance substrate with hexaferrite cavity is proposed. The proposed antenna design is simulated on electromagnetic (EM) simulation software using FR-4 substrate with dielectric constant of 4.4 and thickness of 1.60mm. The proposed antenna has a compact structure with a total size of 50.8x50.8mm. A microstrip fed low profile broadband dielectri...
In the work investigated influence of plasma treatment conditions on structural-phase composition and magnetic properties barium hexaferrite films (0001) BaFe 12 O 19 C-sapphire. Two modes were used: with a weight average temperature 4-5 kK 8-10 kK. It has been shown that obtained at low have pronounced anisotropy saturation magnetization 42 emu/g. The high weak anisotropy, but higher value 62 ...
In the single-phase multiferroics, the coupling between electric polarization (P) and magnetization (M) would enable the magnetoelectric (ME) effect, namely M induced and modulated by E, and conversely P by H. Especially, the manipulation of magnetization by an electric field at room-temperature is of great importance in technological applications, such as new information storage technology, fo...
A study has been carried out on the effect of combination Lanthanum and Cerium doping magnetic properties M-Type hexaferrite permanent magnet oxide. The research was conducted using wet mechanical milling method. materials used were Fe2O3, BaCO3, La2O3, CeO2, all which high purity 99.9%. This also uses technical such as Ethanol Nitrogen. Stoichiometric calculations to calculate composition mixt...
The magnetoelectric effects in multiferroic materials enable the mutual control of electric polarization by a magnetic field and magnetization by an electric field. Nonvolatile electric-field control of magnetization is extremely important for information storage applications, but has been rarely realized in single-phase multiferroic materials. Here we demonstrate the prominent direct and conve...
Single crystals of pure and A1 and Zn Ti substituted X Fe1201g Hexaferrite (X = Sr or Ba) have been grown from different solvents by spontaneous nucleation growth method. Strong improvement in crystal size was obtained using Naz0 Fez03 flux. Ferrimagnetic resonance measurements (FMR) versus frequency and temperature were made in the millimeter wavelength range. The contribution of the intrinsic...
In 1950s, after the discovery of hexagonal ferrites called as hexaferrites, there has been an increasing level curiosity in hexaferrites and still, it is exponentially. Commercially technologically, belong to a category important magnetic materials due their utilization various applications such permanent magnets, recording media, storage devices, rod antennas, high frequency microwave devices ...
By performing density-functional calculations, we find a giant magnetocrystalline anisotropy (MCA) constant in abundant element cerium ($\mathrm{Ce}$) substituted M-type hexaferrite, the energetically favorable strontium site, assisted by quantum confined electron transfer from $\mathrm{Ce}$ to specific iron ($2a$) site. Remarkably, calculated electronic structure shows that leads formation of ...
The doping element and morphology are important factors for improving the magnetic properties of M-type hexaferrite powder. As demand electromagnetic absorber sensors increases in market, it is required to develop powder with a homogenous shape excellent properties. In this study, Ca substituted strontium powders were synthesized by molten salt method under various calcination conditions. succe...
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