Tuning the Shape Anisotropy and Electromagnetic Screening Ability of Ultrahigh Magnetic Polymer and Surfactant-Capped FeCo Nanorods and Nanocubes in Soft Conducting Composites

2016 ◽  
Vol 8 (39) ◽  
pp. 26285-26297 ◽  
Author(s):  
Injamamul Arief ◽  
Sourav Biswas ◽  
Suryasarathi Bose
Keyword(s):  
Shape Anisotropy ◽  
Electromagnetic Screening ◽  
Conducting Composites

Electromagnetic screening in soft conducting composite-containing ferrites: the key role of size and shape anisotropy

2017 ◽  
Vol 1 (12) ◽  
pp. 2574-2589 ◽  
Author(s):  
Sourav Biswas ◽  
Injamamul Arief ◽  
Sujit S. Panja ◽  
Suryasarathi Bose
Keyword(s):  
Shape Anisotropy ◽  
Bottom Up ◽  
Conducting Composite ◽  
Size And Shape ◽  
Synthetic Procedure ◽  
Different Shapes ◽  
Shielding Properties ◽  
Size Controlled ◽  
Electromagnetic Screening

We explored a facile bottom-up synthetic procedure to fabricate different shapes and size controlled Fe3O4 nanoparticles and showed the effect of shape anisotropy and size on the EM shielding properties.

scholarly journals On the Reaction Pathways and Growth Mechanisms of LiNbO3 Nanocrystals from the Non-Aqueous Solvothermal Alkoxide Route

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 154
Author(s):  
Mathias Urbain ◽  
Florian Riporto ◽  
Sandrine Beauquis ◽  
Virginie Monnier ◽  
Jean-Christophe Marty ◽  
...  
Keyword(s):  
Colloidal Stability ◽  
Formation Rate ◽  
Reaction Medium ◽  
Precursor Solution ◽  
Medium Composition ◽  
Shape Anisotropy ◽  
Reaction Pathways ◽  
Growth Mechanisms ◽  
Shape Distribution ◽  
Size And Shape

Phase-pure, highly crystalline sub-50 nm LiNbO3 nanocrystals were prepared from a non-aqueous solvothermal process for 72 h at 230 °C and a commercial precursor solution of mixed lithium niobium ethoxide in its parent alcohol. A systematic variation of the reaction medium composition with the addition of different amounts of co-solvent including butanol, 1,3-propanediol, 1,4-butanediol, and 1,5-pentanediol resulted in the formation of nanocrystals of adjustable mean size and shape anisotropy, as demonstrated from XRD measurements and TEM imaging. Colloidal stability of ethanol- and water-based suspensions was evaluated from dynamic light scattering (DLS)/zeta potential studies and correlated with FTIR data. Thanks to the evolution in the nanocrystal size and shape distribution we observed, as well as to the available literature on the alkoxide chemistry, the reaction pathways and growth mechanisms were finally discussed with a special attention on the monomer formation rate, leading to the nucleation step. The polar, non-perovskite crystalline structure of LiNbO3 was also evidenced to play a major role in the nanocrystal shape anisotropy.

Temperature dependence of the energy barrier in X/1X nm shape-anisotropy magnetic tunnel junctions

2021 ◽  
Vol 118 (1) ◽  
pp. 012409
Author(s):  
Junta Igarashi ◽  
Butsurin Jinnai ◽  
Valentin Desbuis ◽  
Stéphane Mangin ◽  
Shunsuke Fukami ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Energy Barrier ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Shape Anisotropy

Coherent magnetization reversal of a cylindrical nanomagnet in shape-anisotropy magnetic tunnel junctions

2021 ◽  
Vol 118 (8) ◽  
pp. 082404
Author(s):  
Butsurin Jinnai ◽  
Junta Igarashi ◽  
Kyota Watanabe ◽  
Eli Christopher I. Enobio ◽  
Shunsuke Fukami ◽  
...  
Keyword(s):  
Magnetization Reversal ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Shape Anisotropy

scholarly journals X-ray diffraction study of crystallite size-distribution and strain in carbon blacks

2000 ◽  
Vol 661 ◽  
Author(s):  
T. Ungár ◽  
J. Gubicza ◽  
G. Ribárik ◽  
T. W. Zerda
Keyword(s):  
Crystallite Size ◽  
Size Distribution ◽  
Fourier Coefficients ◽  
Shape Anisotropy ◽  
X Ray Diffraction ◽  
Strain Anisotropy ◽  
X Ray ◽  
Carbon Blacks ◽  
Size Profile ◽  
Crystallite Shape

ABSTRACTThe crystallite size and size-distribution in carbon blacks in the presence of strain are determined by recently developed procedure of X-ray diffraction peak profile analysis. The Fourier coefficients of the measured physical profiles are fitted by Fourier coefficients of well established ab initio functions of size and strain peak profiles. Strain anisotropy is accounted for by expressing the mean square strain in terms of average dislocation contrast factors. Crystallite shape anisotropy is modelled by ellipsoids incorporated into the size profile function. To make the fitting procedure faster, the Fourier transform of the size profile is given as an analitical function. The method is applied to carbon blacks treated at different preassures and temperatures. The microstructure is characterised in terms of crystallite size distribution, dislocation density, and crystallite shape anisotropy.

Effect of Shape Anisotropy and Size on the Electronic Structure of CdSe/ZnSe Quantum Dots

2013 ◽  
Vol 12 (6) ◽  
pp. 925-930 ◽  
Author(s):  
Dharmendra Kumar ◽  
Chandra Mohan Singh Negi ◽  
Saral K. Gupta ◽  
Jitendra Kumar
Keyword(s):  
Quantum Dots ◽  
Electronic Structure ◽  
Shape Anisotropy

Magnetometry and Electromagnetic Screening of Dumps - Fast Solution for Geoenvironmental Information Aquisition

2021 ◽  
Author(s):  
J. Burlakovs ◽  
K. Valujeva ◽  
Y. Jani ◽  
M. Kriipsalu ◽  
R.H. Setyobudi
Keyword(s):  
Fast Solution ◽  
Electromagnetic Screening
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