نتایج جستجو برای: hexagonal ferrites

تعداد نتایج: 14976  

2016
J. Gieraltowski J. GIERALTOWSKI

— The influence of the Zn and Cd ion contents upon the natural spin resonance in Ni-Zn and Ni-Cd ferrites has been investigated. Previous experiments by other authors have shown that substituting Zn ions for Ni ions leads to a change of the total effective anisotropy field and consequently of the natural spin resonance frequency fi. ft measurements have been carried out by using a coaxial line ...

2015
Shivani Malhotra Mansi Chitkara

Microwave ferrites require high coercivity for their use as microwave absorbers. Strontium hexaferrite is one of the best material due to its magnetic properties , high coercivity, large unilateral magnetic anisotropy and very low cost in comparison to others make it suitable for the use as microwave components specifically microwave absorber .Strontium nano hexa ferrites were successfully synt...

H. Bakhtiari, Q. Sadr Manuchehri Naeini R. Islampour S. Abedini Khorrami,

Nanocrystalline particles of barium hexaferrite has been prepared by the sol–gel auto- combustion method using iron and barium nitrate with a Ba:Fe molar ratio of 1:10. The effect of fuel such as citric acid and aspartic acid was investigated on the structure and magnetic properties of nanoparticles. The results revealed that the formation of barium hexaferritefine particles is influenced by mo...

Journal: :Nanoscale 2012
Gabriel Caruntu Amin Yourdkhani Marian Vopsaroiu Gopalan Srinivasan

The magnetoelectric effect that occurs in multiferroic materials is fully described by the magnetoelectric coupling coefficient induced either electrically or magnetically. This is rather well understood in bulk multiferroics, but it is not known whether the magnetoelectric coupling properties are retained at nanometre length scales in nanostructured multiferroics. The main challenges are relat...

2013
Jingguo Jia Chuyang Liu Ning Ma Gaorong Han Wenjian Weng Piyi Du

Ti-doped barium ferrite powders BaFe12-x Ti x O19 (x = 0, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7 and 0.8) were synthesized by the sol-gel method. The phase structure and morphology were analyzed by x-ray diffraction (XRD) and scanning electron microscopy, respectively. The powders were also studied for their magnetic properties and microwave absorption. Results show that the Ti-doped barium ferrites (BFT...

Journal: :Oriental journal of chemistry 2022

Ferrites have gained a lot of attention because their diverse uses in domains including photocatalytic degradations, gas sensors, electronic devices, organic transformation catalysts, adsorption, and so on. This review focuses on cadmium ferrites numerous doped versions' production methodologies, characterization, applications. The structural, electric, magnetic, dielectric properties are prima...

2016
S. IMRAN N. AMIN M. I. ARSHAD M. U. ISLAM H. ANWAR A. AZAM M. AHMAD

A series of Cr substituted Mg-ferrites were synthesized by coprecipitation technique annealed at 900 o C for 6h. XRD analysis technique was used to confirm the formation of synthesized ferrites structure and the particle size estimated by Scherrer formula was found to be lying in the range 42.4 to 84.8 nm. All the prepared samples exhibited inverse cubic spinel structure and lattice parameter f...

2009
G. Srinivasan A. S. Tatarenko V. Mathe M. I. Bichurin

Measurements of the strength of magnetoelectric (ME) interactions at microwave and millimeterwave frequencies have been carried out on layered ferrite-piezoelectric oxides. An electric field E applied to the composite produces a mechanical deformation, resulting in a field shift δHE or a frequency shift δfE in the resonance. A stripline structure or a cavity resonator was used. The strength of ...

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