Time Evolution of the Structural, Electronic, and Magnetic Phases in Relaxed SrCoO3 Thin Films

2021 ◽  
Author(s):  
Sourav Chowdhury ◽  
Ram J. Choudhary ◽  
Deodatta M. Phase
Keyword(s):  
Thin Films ◽  
Time Evolution ◽  
Magnetic Phases

Magnetic phases in thin films of Ni–Fe(Co)–Ga ferromagnetic shape memory alloy

2017 ◽  
Vol 50 (45) ◽  
pp. 455006 ◽  
Author(s):  
V A Chernenko ◽  
I R Aseguinolaza ◽  
V Golub ◽  
O Y Salyuk ◽  
J M Barandiarán
Keyword(s):  
Thin Films ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Ferromagnetic Shape Memory Alloy ◽  
Magnetic Phases ◽  
Ferromagnetic Shape Memory

Time evolution of photo-generated defect states in a-Se thin films

2013 ◽  
Author(s):  
Rituraj Sharma ◽  
Pritam Khan ◽  
S. Binu ◽  
K. V. Adarsh
Keyword(s):  
Thin Films ◽  
Time Evolution ◽  
Defect States

Time evolution of heterogeneous thin films during annealing

1989 ◽  
Vol 220 (1) ◽  
pp. 165-180 ◽  
Author(s):  
Akiko Natori ◽  
Masahiro Baba ◽  
Hitoshi Yasunaga
Keyword(s):  
Thin Films ◽  
Time Evolution

scholarly journals Oxygen vacancies controlled multiple magnetic phases in epitaxial single crystal Co0.5(Mg0.55Zn0.45)0.5O1-v thin films

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Dapeng Zhu ◽  
Qiang Cao ◽  
Ruimin Qiao ◽  
Shimeng Zhu ◽  
Wanli Yang ◽  
...  
Keyword(s):  
Thin Films ◽  
Single Crystal ◽  
Oxygen Vacancies ◽  
Magnetic Phases

scholarly journals Semiconducting p-Type Copper Iron Oxide Thin Films Deposited by Hybrid Reactive-HiPIMS + ECWR and Reactive-HiPIMS Magnetron Plasma System

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 232
Author(s):  
Zdenek Hubička ◽  
Martin Zlámal ◽  
Jiri Olejníček ◽  
Drahoslav Tvarog ◽  
Martin Čada ◽  
...  
Keyword(s):  
Thin Films ◽  
Electron Temperature ◽  
Time Evolution ◽  
Plasma Source ◽  
Wave Resonance ◽  
Cathodic Region ◽  
Electron Cyclotron Wave ◽  
Special Modification ◽  
P Type ◽  
Photoelectrochemical Measurement

A reactive high-power impulse magnetron sputtering (r-HiPIMS) and a reactive high-power impulse magnetron sputtering combined with electron cyclotron wave resonance plasma source (r-HiPIMS + ECWR) were used for the deposition of p-type CuFexOy thin films on glass with SnO2F conductive layer (FTO). The aim of this work was to deposit CuFexOy films with different atomic ratio of Cu and Fe atoms contained in the films by these two reactive sputtering methods and find deposition conditions that lead to growth of films with maximum amount of delafossite phase CuFeO2. Deposited copper iron oxide films were subjected to photoelectrochemical measurement in cathodic region in order to test the possibility of application of these films as photocathodes in solar hydrogen production. The time stability of the deposited films during photoelectrochemical measurement was evaluated. In the system r-HiPIMS + ECWR, an additional plasma source based on special modification of inductively coupled plasma, which works with an electron cyclotron wave resonance ECWR, was used for further enhancement of plasma density ne and electron temperature Te at the substrate during the reactive sputtering deposition process. A radio frequency (RF) planar probe was used for the determination of time evolution of ion flux density iionflux at the position of the substrate during the discharge pulses. Special modification of this probe to fast sweep the probe system made it possible to determine the time evolution of the tail electron temperature Te at energies around floating potential Vfl and the time evolution of ion concentration ni. This plasma diagnostics was done at particular deposition conditions in pure r-HiPIMS plasma and in r-HiPIMS with additional ECWR plasma. Generally, it was found that the obtained ion flux density iionflux and the tail electron temperature Te were systematically higher in case of r-HiPIMS + ECWR plasma than in pure r-HiPIMS during the active part of discharge pulses. Furthermore, in case of hybrid discharge plasma excitation, r-HiPIMS + ECWR plasma has also constant plasma density all the time between active discharge pulses ni ≈ 7 × 1016 m−3 and electron temperature Te ≈ 4 eV, on the contrary in pure r-HiPIMS ni and Te were negligible during the “OFF” time between active discharge pulses. CuFexOy thin films with different atomic ration of Cu/Fe were deposited at different conditions and various crystal structures were achieved after annealing in air, in argon and in vacuum. Photocurrents in cathodic region for different achieved crystal structures were observed by chopped light linear voltammetry and material stability by chronoamperometry under simulated solar light and X-ray diffraction (XRD). Optimization of depositions conditions results in the desired Cu/Fe ratio in deposited films. Optimized r-HiPIMS and r-HiPIMS + ECWR plasma deposition at 500 °C together with post deposition heat treatment at 650 °C in vacuum is essential for the formation of stable and photoactive CuFeO2 phase.

Effects of Ti-doping on evolution of coexisting magnetic phases in BaFeO3–δ thin films at room temperature

2014 ◽  
Vol 115 (22) ◽  
pp. 223907 ◽  
Author(s):  
Fozia Aziz ◽  
Mahesh Chandra ◽  
Amit Khare ◽  
Parul Pandey ◽  
K. R. Mavani
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Magnetic Phases ◽  
Ti Doping

scholarly journals Микромагнитные и магнитооптические свойства пленочных структур вида ферромагнетик/тяжелый металл

2019 ◽  
Vol 61 (9) ◽  
pp. 1628
Author(s):  
А.В. Здоровейщев ◽  
О.В. Вихрова ◽  
П.Б. Демина ◽  
М.В. Дорохин ◽  
А.В. Кудрин ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Magnetic Properties ◽  
Kerr Effect ◽  
Ferromagnetic Material ◽  
Electron Beam Evaporation ◽  
Magnetic Domains ◽  
Optical Studies ◽  
Magnetic Phases ◽  
Practical Applications

The paper presents a comparative analysis of the magnetic properties of thin films of CoPt, CoPd, FePd alloys. The films were fabricated by electron-beam evaporation, with the variation of a ferromagnetic material content. Studies of the micromagnetic structure showed a decrease in the size of magnetic domains with an increase of the Co content in CoPt and CoPd films, which is associated with the presence of two magnetic phases in the films. Magneto-optical studies have shown abnormally high Faraday angles and the absence of the Kerr effect for CoPt films, which makes them attractive for practical applications in optics. The minimum coercive field values in magnetic field dependences of magnetization, as compared with other films, were obtained for FePd films, which is also associated with the peculiarities of the magnetic structure.

Magnetic phases in Gd1−xYx thin films

2001 ◽  
Vol 226-230 ◽  
pp. 1180-1181
Author(s):  
J.P Araújo ◽  
A.M Pereira ◽  
J.A.M dos Santos ◽  
M.A.V Baptista ◽  
J.M Moreira ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Phases
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