Investigation of structural, magnetic, and dielectric properties of Bi1−x Ca x Fe1−y Ni y O3 multi-ferroic prepared via a facile microwave-assisted method

2017 ◽  
Vol 4 (10) ◽  
pp. 106110 ◽  
Author(s):  
Ali Darbeheshti ◽  
M E Ghazi ◽  
M Izadifard
Keyword(s):  
Dielectric Properties ◽  
Microwave Assisted ◽  
Magnetic And Dielectric Properties ◽  
Microwave Assisted Method

Effect of Co-substitution on the Vibrational, Magnetic, and Dielectric Properties of Copper Ferrites Obtained by Microwave-Assisted Hydrothermal Method

2018 ◽  
Vol 47 (11) ◽  
pp. 6821-6832 ◽  
Author(s):  
F. S. M. Sinfrônio ◽  
J. A. O. Rodrigues ◽  
F. C. Silva ◽  
R. S. P. Fonseca ◽  
A. S. de Menezes ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Hydrothermal Method ◽  
Co Substitution ◽  
Microwave Assisted ◽  
Magnetic And Dielectric Properties

scholarly journals Preparation and application of carbon and hollow TiO2 microspheres by microwave heating at a low temperature

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 200-209
Author(s):  
Caiyun Zhang ◽  
Chunhong Li ◽  
Bolin Ji ◽  
Zhaohui Jiang
Keyword(s):  
Low Temperature ◽  
Microwave Heating ◽  
Raw Material ◽  
Carbon Microspheres ◽  
Microwave Assisted ◽  
The Core ◽  
Good Crystallinity ◽  
Carbon Core ◽  
Microwave Assisted Method ◽  
Uniform Particle Size

Abstract A fast, simple, and energy-saving microwave-assisted approach was successfully developed to prepare carbon microspheres. The carbon microspheres with a uniform particle size and good dispersity were prepared using glucose as the raw material and HCl as the dehydrating agent at low temperature (90°C) in an open system with the assistance of microwave heating. The carbon microspheres were characterized by elemental analysis, XRD, SEM, FTIR, TG, and Raman. The results showed that the carbon microspheres prepared under the condition of 18.5% (v/v) HCl and heating for 30 min by microwave had a narrow size distribution. The core–shell structure of the carbon core and TiO2 shell was prepared with (NH4)2TiF6, H3BO3 using the microwave-assisted method. The hollow TiO2 microspheres with good crystallinity and high photocatalytic properties were successfully prepared by sacrificing the carbon microspheres.

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

Properties and molecular structure of carbon quantum dots derived from empty fruit bunch biochar using a facile microwave-assisted method for the detection of Cu2+ ions

2021 ◽  
Vol 112 ◽  
pp. 110801
Author(s):  
Alif Syafiq Kamarol Zaman ◽  
Tong Ling Tan ◽  
Yamuna A/P Chowmasundaram ◽  
Norhanisah Jamaludin ◽  
Amir Reza Sadrolhosseini ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Quantum Dots ◽  
Carbon Quantum Dots ◽  
Empty Fruit Bunch ◽  
Microwave Assisted ◽  
Microwave Assisted Method

Ruthenium based electrocatalysts for hydrogen oxidation, prepared by a microwave assisted method

2014 ◽  
Vol 246 ◽  
pp. 438-442 ◽  
Author(s):  
E. Borja-Arco ◽  
O. Jiménez-Sandoval ◽  
L. Magallón-Cacho ◽  
P.J. Sebastian
Keyword(s):  
Hydrogen Oxidation ◽  
Microwave Assisted ◽  
Microwave Assisted Method

Microwave-assisted method for the synthesis of cellulose-based composites and their thermal transformation to Mn2O3

2013 ◽  
Vol 43 ◽  
pp. 751-756 ◽  
Author(s):  
Shu-Ming Li ◽  
Ying-Ling Wang ◽  
Ming-Guo Ma ◽  
Jie-Fang Zhu ◽  
Run-Cang Sun ◽  
...  
Keyword(s):  
Thermal Transformation ◽  
Microwave Assisted ◽  
Microwave Assisted Method

Magnetic and Dielectric Properties of a Metal/ Cr2O3/Cr2O3-x/Cr2O3/Semiconductor Capacitor Using Magneto-Electric Materials

2007 ◽  
Vol 350 ◽  
pp. 221-224
Author(s):  
Takeshi Yokota ◽  
Takaaki Kuribayashi ◽  
Takeshi Shundo ◽  
Keita Hattori ◽  
Yasutoshi Sakakibara ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Magnetic Moment ◽  
Floating Gate ◽  
Single System ◽  
Insulating Layer ◽  
Ferromagnetic Properties ◽  
Capacitance Voltage ◽  
Magnetic And Dielectric Properties ◽  
Mis Capacitor ◽  
Electric Materials

We investigated the magnetic and dielectric properties of a metal (Pt)/insulator (Cr2O3)/semiconductor (Si) (MIS) capacitor composed of magneto-electric (ME) materials. The capacitor has anti-ferromagnetic properties and a very small electrically induced magnetic moment. It also shows capacitance-voltage (C-V) properties typical of a Si-MIS capacitor without any hysteresis. By inserting a thin Cr2O3-x layer, the C-V curve has a hysteresis window with a clockwise trace, which indicates that electrons have been injected into the Cr2O3-x layer. These results indicate that this MIS capacitor contains a floating gate and an ME insulating layer in a single system.

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