scholarly journals Electrodeposition of Hybrid Magnetostrictive/Magnetoelectric Layered Systems

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6304
Author(s):  
Sara Abad ◽  
Alicia Prados ◽  
Marco Maicas ◽  
Neven Biskup ◽  
Maria Varela ◽  
...  
Keyword(s):  
Magnetic Force ◽  
Close Contact ◽  
Magnetic Behavior ◽  
Growth Potential ◽  
Layered System ◽  
Layered Systems ◽  
Sample Plane ◽  
X Ray ◽  
Force Microscopy ◽  
Potential Use

The potential use of electrodeposition to synthesize a hybrid magnetostrictive/magnetoelectric layered system is shown in this paper. By appropriately adjusting pH, growth potential, and electrolyte composition, it is possible to achieve thin films in which magnetoelectric oxide GaFeO3 (GFO) is formed in close contact with magnetostrictive metallic FeGa alloy. X-ray diffractometry shows the formation of FeGa as well as GFO and Fe oxides. Electron microscopy observations reveal that GFO mainly segregates in grain boundaries. Samples are ferromagnetic with an isotropic magnetic behavior in the sample plane. Magnetic stripes are observed by magnetic force microscopy and are correlated to Fe3O4. When its segregation is minimal, the absence of stripes can be used to monitor Fe oxide segregation.

scholarly journals Magnetic reconfiguration of MnAs∕GaAs(001) observed by magnetic force microscopy and resonant soft x-ray scattering

2006 ◽  
Vol 100 (8) ◽  
pp. 083906 ◽  
Author(s):  
L. N. Coelho ◽  
B. R. A. Neves ◽  
R. Magalhães-Paniago ◽  
F. C. Vicentin ◽  
H. Westfahl ◽  
...  
Keyword(s):  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
X Ray ◽  
Force Microscopy ◽  
X Ray Scattering ◽  
Ray Scattering

The Magnetic Behavior of Triangular Shaped Permalloy Nanomagnet Arrays

2003 ◽  
Vol 789 ◽  
Author(s):  
J. Y. Shiu ◽  
M. F. Tai ◽  
Y. D. Yao ◽  
C. W. Kuo ◽  
P. Chen
Keyword(s):  
Magnetic Force ◽  
Nanosphere Lithography ◽  
Domain Size ◽  
Magnetic Behavior ◽  
Magnetic Storage ◽  
Magnetic Media ◽  
Large Area ◽  
Force Microscopy ◽  
Monodisperse Polystyrene ◽  
Magnetic Dots

ABSTRACTDuring the past few decades, the density of magnetic storage has been improved considerably. To increase the storage capacity, it is necessary to reduce the size of magnetic grains. However, as the domain size decreases, their thermal stability will also decrease, which results in the loss of magnetization. To overcome the limit imposed by such superparamagnetic behavior, lots of recent research attentions have been focused on the patterned magnetic media. To maximize the storage density, it is preferable to create periodical magnetic patterns, in which single-domain magnetic dots are well separated from each other. In this experiment, we have utilized nanosphere lithography to create large-area well-ordered two dimension arrays of permalloy (Ni80Fe20) nanoparticles. Nanosphere lithography is an inexpensive, simple, parallel, and high throughput fabrication technique. We have employed monodisperse polystyrene beads with diameter of 650, 560, 440, 350, 280 nm to fabricate triangle-shaped permalloy (Ni80Fe20) nano-arrays with lateral dimension in the region of 170∼90 nm, and thickness in the region of 10∼50 nm. The magnetic behavior of these triangle-shaped nanomagnet arrays have been investigated by longitudinal magnetic optic Kerr effect (LMOKE) and magnetic force microscopy (MFM). It was found that the coercivity of the permalloy nanoparticle arrays increases with decreasing the thickness of the nanoparticle. This can be attributed to the interface effect between the arrays and the substrate.

Chemically Deposited Silver Antimony Selenide Thin Films for Photovoltaic Applications

2009 ◽  
Vol 1165 ◽  
Author(s):  
Jorge G. Garza ◽  
Sadasivan Shaji ◽  
Ana Maria Arato Tovar ◽  
Eduardo Perez Tijerina ◽  
Alan Castillo Roderiguez ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Close Contact ◽  
Optical Transmittance ◽  
Halogen Lamp ◽  
X Ray ◽  
Force Microscopy ◽  
Glass Substrates ◽  
Atomic Force ◽  
Antimony Selenide

AbstractSilver antimony selenide (AgSbSe2) thin films were prepared by heating sequentially deposited antimony sulphide (Sb2S3), silver selenide (Ag2Se) and Ag thin films in close contact with a selenium thin film. Sb2S3 thin film was prepared from chemical bath containing SbCl3 and Na2S2O3, Ag2Se from the bath containing AgNO3 and Na2SeSO3 and Se thin films from an acidified solution of Na2SeSO3, at room temperature on cleaned glass substrates. Ag thin film was deposited by vacuum thermal evaporation. The annealing temperature was varied from 300-390°C in vacuum (∼10−3 Torr) for 1 h. X-ray diffraction analysis showed the films formed at 350 °C was polycrystalline AgSb(S,Se)2 or AgSbSe2 depending on selenium thin film thickness. Morphology of these films was analyzed using Atomic Force Microscopy and Scanning Electron Microscopy. The elemental analysis was done using Energy Dispersive X-ray technique. Optical characterization of the thin films was done by optical transmittance spectra. The electrical characterizations were done using Hall effect and photocurrent measurements. A photovoltaic structure: Glass/ITO/CdS/AgSbSe2/Ag was formed, in which CdS was deposited by chemical bath deposition. J-V characteristics of this PV structure showed Voc=370 mV and Jsc=0.5 mA/cm2 under illumination using a tungsten halogen lamp.

scholarly journals Синтез и оптические свойства пленок оксида титана, модифицированных кобальтом

2019 ◽  
Vol 126 (6) ◽  
pp. 751
Author(s):  
В.А. Логачева ◽  
А.Н. Лукин ◽  
Н.Н. Афонин ◽  
О.В. Сербин
Keyword(s):  
Magnetic Force ◽  
Optical Band Gap ◽  
Incident Angle ◽  
Cubic Phase ◽  
Titanium Oxides ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
Ir Reflection ◽  
Ir Reflection Spectra

Using X-ray phase analysis, scanning electron microscopy atomic force and magnetic force microscopy, and IR spectroscopy the properties of polycrystalline TiO2 films modified by cobalt during magnetron sputtering and subsequent pulsed photon processing in air have been investigated. It has been found that in the course of the modification, a nanocrystalline (with a grain size of ~ 50 nm) film consisting of cobalt and titanium oxides is formed. Their surface exhibits magnetic properties. In the IR reflection spectra obtained at different incident angle of beam, two of the transverse optical (TO) phonons and their corresponding longitudinal (LO) phonons above 500–600 cm–1 were observed, which identify the formation of Co3O4 in the spinel structure. The study of optical absorption indicates the predominant existence in the films of phases with direct optical transitions. The optical band gap value was 1.43 and 1. 83 eV for Co3O4 and 2.65 eV for the cubic phase of CoO.

scholarly journals Magnetic force microscopy and x-ray scattering study of 70×550 nm2 pseudo-spin-valve nanomagnets

2003 ◽  
Vol 93 (10) ◽  
pp. 7927-7929 ◽  
Author(s):  
F. J. Castaño ◽  
Y. Hao ◽  
S. Haratani ◽  
C. A. Ross ◽  
B. Vögeli ◽  
...  
Keyword(s):  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Spin Valve ◽  
X Ray ◽  
Force Microscopy ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Ray Scattering
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