Effect of anti-ferromagnet surface moment density on the hysteresis properties of exchange coupled antiferromagnet-ferromagnet systems: The case of bismuth-ferrite

2012 ◽  
Vol 111 (10) ◽  
pp. 103904 ◽  
Author(s):  
Khalid Ashraf ◽  
Sayeef Salahuddin
Keyword(s):  
Bismuth Ferrite ◽  
Surface Moment ◽  
Hysteresis Properties

Digital differential hysteresis iimage processing displays what the microscope acquires but the eye can't see

1995 ◽  
Vol 53 ◽  
pp. 642-643
Author(s):  
Klaus-Ruediger Peters
Keyword(s):  
Image Processing ◽  
Visual System ◽  
High Precision ◽  
Image Data ◽  
Processing Technology ◽  
Output Data ◽  
Contrast Resolution ◽  
Pixel Intensity ◽  
Data Reading ◽  
Hysteresis Properties

Differential hysteresis processing is a new image processing technology that provides a tool for the display of image data information at any level of differential contrast resolution. This includes the maximum contrast resolution of the acquisition system which may be 1,000-times higher than that of the visual system (16 bit versus 6 bit). All microscopes acquire high precision contrasts at a level of <0.01-25% of the acquisition range in 16-bit - 8-bit data, but these contrasts are mostly invisible or only partially visible even in conventionally enhanced images. The processing principle of the differential hysteresis tool is based on hysteresis properties of intensity variations within an image.Differential hysteresis image processing moves a cursor of selected intensity range (hysteresis range) along lines through the image data reading each successive pixel intensity. The midpoint of the cursor provides the output data. If the intensity value of the following pixel falls outside of the actual cursor endpoint values, then the cursor follows the data either with its top or with its bottom, but if the pixels' intensity value falls within the cursor range, then the cursor maintains its intensity value.

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>

Topographic characterization of (Zr, Mn) co‐doped bismuth ferrite thin film surfaces

2021 ◽  
Author(s):  
Ştefan Ţălu ◽  
Arumugasamy Sathiya Priya ◽  
Deivasigamani Geetha
Keyword(s):  
Thin Film ◽  
Bismuth Ferrite ◽  
Co Doped

Investigation of Magnetic Hysteresis Properties of (Sm0.8Zr0.2)(Fe0.72Co0.24Ti0.04)10–12 Melt-Spun Ribbons

2021 ◽  
Vol 62 (9-10) ◽  
pp. 566-571
Author(s):  
A. V. Protasov ◽  
A. G. Popov ◽  
V. S. Gaviko ◽  
P. B. Terent’ev ◽  
Tiangli Zhang
Keyword(s):  
Magnetic Hysteresis ◽  
Melt Spun ◽  
Melt Spun Ribbons ◽  
Hysteresis Properties

scholarly journals Layer and spontaneous polarizations in perovskite oxides and their interplay in multiferroic bismuth ferrite

2021 ◽  
Vol 154 (15) ◽  
pp. 154702
Author(s):  
Nicola A. Spaldin ◽  
Ipek Efe ◽  
Marta D. Rossell ◽  
Chiara Gattinoni
Keyword(s):  
Bismuth Ferrite ◽  
Perovskite Oxides

Magnetodielectric properties of nanodisc bismuth ferrite grown within Na-4 mica nanochannels

2010 ◽  
Vol 108 (11) ◽  
pp. 114306 ◽  
Author(s):  
Partha Hajra ◽  
Mrinal Pal ◽  
Anindya Datta ◽  
Dipankar Chakravorty ◽  
Vyacheslav Meriakri ◽  
...  
Keyword(s):  
Bismuth Ferrite

Electric-Field-Induced Domain Switching and Domain Texture Relaxations in Bulk Bismuth Ferrite

2015 ◽  
Vol 98 (12) ◽  
pp. 3884-3890 ◽  
Author(s):  
Neamul H. Khansur ◽  
Tadej Rojac ◽  
Dragan Damjanovic ◽  
Christina Reinhard ◽  
Kyle G. Webber ◽  
...  
Keyword(s):  
Electric Field ◽  
Domain Switching ◽  
Bismuth Ferrite

Effect of Gadolinium Substitution on Dielectric Properties of Bismuth Ferrite

2006 ◽  
Vol 24 (1) ◽  
pp. 273-276 ◽  
Author(s):  
Chang Fanggao ◽  
Song Guilin ◽  
Fang Kun ◽  
Qin Ping ◽  
Zeng Qijun
Keyword(s):  
Dielectric Properties ◽  
Bismuth Ferrite
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