Phase composition and growth mechanisms of half-metal Heusler alloy produced by Pulsed Laser Deposition: From core-shell nanoparticles to amorphous randomic clusters

2017 ◽  
Vol 196 ◽  
pp. 103-108 ◽  
Author(s):  
N.R. Checca ◽  
R.J. Caraballo-Vivas ◽  
R. Torrão ◽  
A. Rossi ◽  
M.S. Reis
Keyword(s):  
Phase Composition ◽  
Pulsed Laser Deposition ◽  
Heusler Alloy ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Core Shell ◽  
Growth Mechanisms ◽  
Shell Nanoparticles ◽  
Half Metal ◽  
Core Shell Nanoparticles

scholarly journals Morphological and Elemental Investigations on Co–Fe–B–O Thin Films Deposited by Pulsed Laser Deposition for Alkaline Water Oxidation: Charge Exchange Efficiency as the Prevailing Factor in Comparison with the Adsorption Process

2021 ◽  
Author(s):  
Y. Popat ◽  
M. Orlandi ◽  
S. Gupta ◽  
N. Bazzanella ◽  
S. Pillai ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Water Oxidation ◽  
Active Sites ◽  
High Surface ◽  
Pulsed Laser ◽  
Industrial Applications ◽  
Active Species ◽  
Laser Deposition ◽  
Core Shell ◽  
Adsorption Sites

Abstract Mixed transition-metals oxide electrocatalysts have shown huge potential for electrochemical water oxidation due to their earth abundance, low cost and excellent electrocatalytic activity. Here we present Co–Fe–B–O coatings as oxygen evolution catalyst synthesized by Pulsed Laser Deposition (PLD) which provided flexibility to investigate the effect of morphology and structural transformation on the catalytic activity. As an unusual behaviour, nanomorphology of 3D-urchin-like particles assembled with crystallized CoFe2O4 nanowires, acquiring high surface area, displayed inferior performance as compared to core–shell particles with partially crystalline shell containing boron. The best electrochemical activity towards water oxidation in alkaline medium with an overpotential of 315 mV at 10 mA/cm2 along with a Tafel slope of 31.5 mV/dec was recorded with core–shell particle morphology. Systematic comparison with control samples highlighted the role of all the elements, with Co being the active element, boron prevents the complete oxidation of Co to form Co3+ active species (CoOOH), while Fe assists in reducing Co3+ to Co2+ so that these species are regenerated in the successive cycles. Thorough observation of results also indicates that the activity of the active sites play a dominating role in determining the performance of the electrocatalyst over the number of adsorption sites. The synthesized Co–Fe–B–O coatings displayed good stability and recyclability thereby showcasing potential for industrial applications. Graphic Abstract

scholarly journals Particle growth mechanisms in Ag–ZrO2and Au–ZrO2granular films obtained by pulsed laser deposition

2006 ◽  
Vol 17 (16) ◽  
pp. 4106-4111 ◽  
Author(s):  
Zorica Konstantinović ◽  
Montserrat García del Muro ◽  
Manuel Varela ◽  
Xavier Batlle ◽  
Amílcar Labarta
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Particle Growth ◽  
Laser Deposition ◽  
Growth Mechanisms

scholarly journals Structural and optical properties of Zn0.9Mn0.1O/ZnO core-shell nanowires designed by pulsed laser deposition

2009 ◽  
Vol 106 (9) ◽  
pp. 093501 ◽  
Author(s):  
V. E. Kaydashev ◽  
E. M. Kaidashev ◽  
M. Peres ◽  
T. Monteiro ◽  
M. R. Correia ◽  
...  
Keyword(s):  
Optical Properties ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Core Shell ◽  
Structural And Optical Properties ◽  
Shell Nanowires
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