Structural, magnetic and dielectric properties of (Li1+, Al3+) co-doped Ni0.5Zn0.5Fe2O4 ferrite ceramics prepared by the sol-gel auto-combustion method

2020 ◽  
Vol 20 (9) ◽  
pp. 1019-1025
Author(s):  
Qing Ni ◽  
Li Sun ◽  
Ensi Cao ◽  
Wentao Hao ◽  
Yongjia Zhang ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Sol Gel ◽  
Combustion Method ◽  
Auto Combustion ◽  
Magnetic And Dielectric Properties ◽  
Co Doped

Influence of Ca-Doping on Structural, Magnetic and Dielectric Properties of Ba3Co2-xCaxFe24O41 Hexaferrite Powders

2015 ◽  
Vol 241 ◽  
pp. 226-236 ◽  
Author(s):  
Neha Solanki ◽  
Rajshree B. Jotania
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Sol Gel ◽  
Calcium Content ◽  
Combustion Method ◽  
Dielectric Behavior ◽  
Dielectric Parameters ◽  
Ca Doping ◽  
Auto Combustion ◽  
Magnetic And Dielectric Properties

Influence of Ca substitution on structural, magnetic and dielectric properties of Ba3Co2-xCaxFe24O41(where x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0), prepared by Sol-Gel auto-combustion method, has been investigated in present studies. The obtained powder was sintered at 950 oC for 4 hrs. in the static air atmosphere. Structural analysis of Ca-doped Ba3Co2-xCaxFe24O41powders revealed pure Z-type hexaferrite phase at low temperature. The frequency dependent dielectric constant (Єʹ) and magnetic properties such as remanent magnetization (Mr), saturation magnetization (Ms) and coercivity (Hc) were studied. It is observed that coercivity increased gradually with increase in calcium content. The real dielectric constant (Єʹ) and dielectric loss tangent (tan δ) were studied in the frequency range of 20Hz to 2MHz. The dielectric parameters for all samples show normal dielectric behavior as observed in hexaferrites. Contents of Paper

scholarly journals Optimization of synthesis conditions and the study of magnetic and dielectric properties for MgFe2O4 ferrite

2013 ◽  
Vol 11 (8) ◽  
pp. 1330-1342 ◽  
Author(s):  
Alin Druc ◽  
Anca Dumitrescu ◽  
Adrian Borhan ◽  
Valentin Nica ◽  
Alexandra Iordan ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Spinel Structure ◽  
Sol Gel ◽  
Combustion Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Synthesis Conditions ◽  
Auto Combustion ◽  
Magnetic And Dielectric Properties ◽  
First Time

AbstractNano-sized magnesium ferrites were synthesized by the sol-gel auto-combustion method using a variety of chelating/combustion agents: tartaric acid, citric acid, cellulose, glycine, urea and hexamethylenetetramine. The original purpose of this work was the synthesis of nano-sized magnesium ferrite by using, for the first time, cellulose and hexamethylenetetramine as chelating/combustion agents. Synthesized samples were subjected to different heat treatments at 773 K, 973 K and, respectively 1173 K in air. The disappearance of the organic phase and nitrate phase with the spinel structure formation was monitored by infrared absorption spectroscopy. Spinel structure, crystallite size and cation distribution were evaluated by X-ray diffraction data. The morphology of as-prepared powders was studied using scanning electron microscopy. The magnetic and dielectric properties were studied for the obtained samples.

Size dependent morphology, magnetic and dielectric properties of BiFeO3 nanoparticles

MRS Advances ◽  
2019 ◽  
Vol 4 (28-29) ◽  
pp. 1659-1665 ◽  
Author(s):  
Nidhi Sheoran ◽  
Monika Saini ◽  
Ashok Kumar ◽  
Vinod Kumar ◽  
Tanuj Kumar ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Phase Formation ◽  
Rural Areas ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Antiferromagnetic Order ◽  
Ferromagnetic Behavior ◽  
Potential Candidate ◽  
Auto Combustion ◽  
Magnetic And Dielectric Properties

AbstractNano-sized BiFeO3 were synthesized by sol-gel auto combustion method and report the effect of different annealing temperature (400 °C, 500 °C, 600 °C) on phase formation, morphology, magnetic and dielectric properties of synthesized bismuth ferrite (BiFeO3) nanoparticles. The phase formation of BFO nanoparticles were confirmed by X-ray diffraction pattern. Further, significant increment in particle size with increasing annealing temperature was estimated by field emission electron microscopy (FESEM). Magnetization curve showed the soft ferromagnetic behavior of the samples annealed at 400 OC and 500 OC that was explained on the basis of disturbance of spiral modulated long range antiferromagnetic order of bulk BFO. Dielectric response revealed decrease in dielectric constant with increasing annealing temperature. BFO is a room-temperature multiferroic material so it is potential candidate for various applications viz. Water waste treatment, gas sensors and photovoltaic cells in rural areas.

scholarly journals Structural, Magnetic and Dielectric Properties of Fe-Co Co-Doped Ba<sub>0.9</sub>Sr<sub>0.1</sub>TiO<sub>3</sub> Prepared by Sol Gel Technique

2014 ◽  
Vol 04 (02) ◽  
pp. 19-28 ◽  
Author(s):  
Inas Kamal Batttisha ◽  
Ibrahim Sayed Ahmed Farag ◽  
Mostafa Kamal ◽  
Mohamed Ali Ahmed ◽  
Emad Girgis ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Sol Gel ◽  
Gel Technique ◽  
Magnetic And Dielectric Properties ◽  
Co Doped

Effect of annealing temperature on dielectric properties of iron oxide prepared by sol–gel auto combustion method

2021 ◽  
Vol 577 (1) ◽  
pp. 38-51
Author(s):  
Sk Yasnur ◽  
Prasenjit Maji ◽  
Apurba Ray ◽  
Himadri Mullick ◽  
Sachindranath Das
Keyword(s):  
Iron Oxide ◽  
Dielectric Properties ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Combustion Method ◽  
Auto Combustion
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