Exchange bias in bismuth ferrite/cobalt ferrite Janus nanofibers

2017 ◽  
Vol 5 (33) ◽  
pp. 8586-8592 ◽  
Author(s):  
M. A. K. Budi ◽  
E. B. Glass ◽  
N. G. Rudawski ◽  
J. S. Andrew
Keyword(s):  
Exchange Bias ◽  
Cobalt Ferrite ◽  
Bismuth Ferrite ◽  
Ferrite Cobalt

Bismuth ferrite:cobalt ferrite (BiFeO3:CoFe2O4) nanofibers with tailorable exchange bias effects were synthesized utilizing a Janus type morphology, wherein both phases are coupled longitudinally along the length of each fiber.

Coercivity and exchange bias of bismuth ferrite nanoparticles isolated by polymer coating

2014 ◽  
Vol 115 (12) ◽  
pp. 123906 ◽  
Author(s):  
Smita Chaturvedi ◽  
Mandar M. Shirolkar ◽  
Ranguwar Rajendra ◽  
Surjeet Singh ◽  
Nirmalya Ballav ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Polymer Coating ◽  
Bismuth Ferrite ◽  
Ferrite Nanoparticles

scholarly journals Synthesis and Characterization of Pure Cobalt Ferrite for DC Electrical

2019 ◽  
Vol 8 (12S) ◽  
pp. 203-207
Keyword(s):  
Spinel Structure ◽  
Cobalt Ferrite ◽  
Average Rate ◽  
Precipitation Process ◽  
Material Technology ◽  
Pure Cobalt ◽  
Electrical Devices ◽  
Co Precipitation ◽  
Ferrite Cobalt

Ferrite Cobalt (CoFe2O4) is a distinguished magnetic material with average enforcement and average magnitude of magnetization. It has a distinct chemical stability and mechanized hardness. It is an expectant advocate for the procedure of sensory devices and actuators, as a definitive sealing, magnetic drug target, and electrical devices and has an extensive range of research in material technology/science for technological uses/applications. The naoparticles of cobalt ferrite on an entangled effectively processed at ambient temperature through a simple co-precipitation process. The crystal structure & morphology of symbol was determined by XRD and SEM. The XRD spectrum confirms that the composite nanoparticles are formed by the perfect spinel structure. The average rate of crystals was determined by means of Modified Scherer (54nm) and Williamson-Hall (49nm) methods. A SEM view showed the nanoparticles CoFe2O4 being grouped in nearby structures. The bond and visual features were described by FTIR and UV-Vis Spectrum. Compared with other absorbing bands informed in literature, this material shows a very large intake band between 350 and 600 cm-1 in the FTIR test. More than one pitch in UVVis spectrum is seen with a direct straight band gap identified of 4.1 eV and 4.9 eV. This is again in contrast to other reports in literature. These irregular outcomes express that although a very good spinel structure is in place, coordination of the symbols in the cells of the unit is different here. An electronic DC training for the temperatures cobalt ferrite was tested for temperature, which again showed some interesting results from those reported in literature. This combination of irregular buildings in considerable degree of the ferrite needs to demonstrate a deeper analysis of the overall structure and characteristics of cobalt ferrite in comparison to these methods.

Ti3C2-MXene/Bismuth Ferrite Nanohybrids for Efficient Degradation of Organic Dye and Colorless Pollutant

2019 ◽  
Author(s):  
Ayesha Tariq ◽  
M. Abdullah Iqbal ◽  
S. Irfan Ali ◽  
Muhammad Z. Iqbal ◽  
Deji Akinwande ◽  
...  
Keyword(s):  
Surface Area ◽  
Low Cost ◽  
Bismuth Ferrite ◽  
Organic Dye ◽  
Two Dimensional ◽  
Electron Hole ◽  
Photocatalytic Application ◽  
Electron Hole Pair ◽  
Pair Generation ◽  
Photocatalytic Applications

<p>Nanohybrids, made up of Bismuth ferrites/Carbon allotropes, are extensively used in photocatalytic applications nowadays. Our work proposes a nanohybrid system composed of Bismuth ferrite nanoparticles with two-dimensional (2D) MXene sheets namely, the BiFeO<sub>3</sub> (BFO)/Ti<sub>3</sub>C<sub>2</sub> (MXene) nanohybrid for enhanced photocatalytic activity. We have fabricated the BFO/MXene nanohybrid using simple and low cost double solvent solvothermal method. The SEM and TEM images show that the BFO nanoparticles were attached onto the MXene surface and in the inter-layers of two-dimensional (2D) MXene sheets. The photocatalytic application is tested for the visible light irradiation which showed the highest efficiency among all pure-BFO based photocatalysts, i.e. 100% degradation in 42 min for organic dye (Congo Red) and colorless aqueous pollutant (acetophenone) in 150 min, respectively. The present BFO-based hybrid system exhibited the large surface area of 147 m<sup>2</sup>g<sup>-1</sup>measured via Brunauer-Emmett-Teller (BET) sorption-desorption technique, and is found to be largest among BFO and its derivatives. Also, the photoluminescence (PL) spectra indicate large electron-hole pair generation. Fast and efficient degradation of organic molecules is supported by both factors; larger surface area and lower electron-hole recombination rate. The BFO/MXene nanohybrid presented here is a highly efficient photocatalyst compared to other nanostructures based on pure BiFeO<sub>3</sub> which makes it a promising candidate for many future applications.</p>

Fabrication of the Cobalt Ferrite/Modified Sodium Bismuth Titanate 0-3 Multiferroic Composites via Diffusion-blocking

2011 ◽  
Vol 26 (5) ◽  
pp. 486-490 ◽  
Author(s):  
Quan-Wei HAN ◽  
Kun LI ◽  
Song PENG ◽  
Yu WANG ◽  
Helen Lai-Wa CHAN
Keyword(s):  
Cobalt Ferrite ◽  
Bismuth Titanate ◽  
Sodium Bismuth Titanate
Sign in / Sign up

Export Citation Format

Share Document