AC Conductivity and Dielectric Properties of TiCo Substituted Y-type Strontium Nano Hexa-ferrites Prepared by Sol Gel Auto-combustion

2019 ◽  
Vol 15 ◽  
pp. 490-497
Author(s):  
Vijay V. Warhate ◽  
V.D. Badwaik ◽  
D.S. Badwaik
Keyword(s):  
Dielectric Properties ◽  
Ac Conductivity ◽  
Sol Gel ◽  
Auto Combustion

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

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.

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

Effect of Heat Treatment on Structural, Magnetic and Electric Properties of Z-Type Barium Cobalt Hexaferrite Powder

2014 ◽  
Vol 938 ◽  
pp. 24-29 ◽  
Author(s):  
Neha Solanki ◽  
G. Packiaraj ◽  
Rajshree B. Jotania
Keyword(s):  
Heat Treatment ◽  
Ac Conductivity ◽  
Room Temperature ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Frequency Range ◽  
Treatment Conditions ◽  
Auto Combustion ◽  
Powder Samples ◽  
Combustion Technique

Z-type hexaferrite with composition Ba3Co2Fe24O41has been synthesized using a sol-gel auto combustion technique. The obtain combusted powder was sintered at 500 OC and followed by 950 OC for 4 hrs in a muffle furnace. The effect of different sintering temperature on crystal structure, crystallite size, microstructure and dielectric properties were systematically investigated. The prepared barium cobalt hexaferrite powder samples were characterized using different experimental techniques like FTIR, XRD, AC conductivity and specific magnetization measurements. It was observed from XRD results that heat treatment conditions play significant role in the formation of hexaferrite phase. AC conductivity measurements were carried out at room temperature in frequency range of 20Hz to 2MHz. All the samples show the frequency dependent phenomena, i.e. the AC conductivity increases with increasing frequency.

High frequency dielectric properties of Eu+3-substituted Li–Mg ferrites synthesized by sol–gel auto-combustion method

2014 ◽  
Vol 586 ◽  
pp. 404-410 ◽  
Author(s):  
M. Asif Iqbal ◽  
M.U. Islam ◽  
Irshad Ali ◽  
Muhammad Azhar khan ◽  
Imran Sadiq ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
High Frequency ◽  
Sol Gel ◽  
Combustion Method ◽  
Auto Combustion

scholarly journals Structures and properties of Mg0.95Mn0.01TM0.04O (TM = Co, Ni, and Cu) nanoparticles synthesized by sol–gel auto combustion technique

RSC Advances ◽  
2018 ◽  
Vol 8 (25) ◽  
pp. 14120-14128 ◽  
Author(s):  
M. A. Dar ◽  
Dinesh Varshney
Keyword(s):  
Dielectric Properties ◽  
Room Temperature ◽  
Sol Gel ◽  
Cu Nanoparticles ◽  
Structures And Properties ◽  
Auto Combustion ◽  
Combustion Technique

The room temperature structural, optical and dielectric properties of Mg0.95Mn0.05O and Mg0.95Mn0.01TM0.04O (TM = Co, Ni, and Cu) nanoparticles are reported.

Sign in / Sign up

Export Citation Format

Share Document