scholarly journals Investigation of Multilayer Nanostructures of Magnetic Straintronics Based on the Anisotropic Magnetoresistive Effect

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5785
Author(s):  
Dmitry Zhukov ◽  
Vladimir Amelichev ◽  
Sergey Kasatkin ◽  
Dmitry Kostyuk
Keyword(s):  
Magnetron Sputtering ◽  
Silicon Wafer ◽  
Experimental Studies ◽  
Practical Application ◽  
Easy Magnetization ◽  
Mechanical Loads ◽  
Multilayer Nanostructures ◽  
Magnetic Layers ◽  
Magnetoresistive Effect ◽  
Anisotropic Magnetoresistive Effect

The article presents the results of experimental studies of multilayer nanostructures of magnetic straintronics formed by magnetron sputtering on a 100 mm silicon wafer. The object of the study is two types of nanostructures: Ta/FeNiCo/CoFe/Ta and Ta/FeNi/CoFe/Ta, differing in the ratio of magnetic layers. The magnetic and magnetoresistive characteristics of multilayer nanostructures under varying mechanical loads are studied both on a 100 mm wafer and in the form of 4 × 20 mm2 samples of two types. The first, where the axis of easy magnetization is directed along the long side of the sample, and the second, where the axis of easy magnetization is a tilt at 45°. Based on the obtained data, the conclusions about the practical application of these nanostructures in magnetic straintronics elements are drawn.

ИССЛЕДОВАНИЕ МАГНИТОРЕЗИСТИВНЫХ НАНОСТРУКТУР С МАГНИТОСТРИКЦИОННЫМ ЭФФЕКТОМ ДЛЯ УСТРОЙСТВ МАГНИТНОЙ СТРЕЙНТРОНИКИ

2020 ◽  
Vol 96 (3s) ◽  
pp. 420-423
Author(s):  
Д.А. Жуков ◽  
В.В. Амеличев ◽  
Д.В. Костюк ◽  
А.И. Крикунов ◽  
Д.В. Васильев ◽  
...  
Keyword(s):  
Thin Film ◽  
Experimental Studies ◽  
Silicon Substrates ◽  
Multilayer Nanostructures ◽  
Magnetoresistive Effect ◽  
Anisotropic Magnetoresistive Effect

Представлены результаты экспериментальных исследований магнитострикционных и магниторезистивных свойств тонкопленочных многослойных наноструктур Ta/FeNiCo/CoFe/Ta и Ta/FeNiCo/CoFeВ/Ta на окисленных кремниевых подложках диаметром 100 мм. Экспериментально установлена зависимость величины анизотропного магниторезистивного эффекта от величины механических деформаций в экспериментальных образцах наноструктур. The paper presents the results of experimental studies of the magnetostriction and magnetoresistive properties of thin-film multilayer nanostructures Ta/FeNiCo/CoFe/Ta and Ta/FeNiCo/CoFeB/Ta on oxidized silicon substrates with a diameter of 100 mm. The dependence of the magnitude of the anisotropic magnetoresistive effect on the magnitude of mechanical strains in experimental samples of nanostructures has been experimentally established.

Microsystems with High Conversion Coefficient of a Weak Magnetic Field Based on Magnetoresistive Nanostructures

2020 ◽  
Vol 25 (5) ◽  
pp. 432-439
Author(s):  
V.V. Amelichev ◽  
◽  
A.A. Reznev ◽  
A.N. Saurov ◽  
◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Conversion Coefficient ◽  
Experimental Studies ◽  
Transfer Characteristic ◽  
Special Equipment ◽  
Giant Magnetoresistive Effect ◽  
Highly Sensitive ◽  
Magnetoresistive Effect ◽  
Anisotropic Magnetoresistive Effect

The magnetoresistive transducers of magnetic field have been claimed both for direct and indirect applications in various areas of industry, transport and special equipment. In the paper the special features of used terminology and dimensions in the main parameters of magnetic field magnetoresistive transformers have been revealed. The main results of experimental studies on the developed thin-film magnetoresistive nanostructures (TMN) with even and odd transfer characteristics have been presented. The TMN design on an anisotropic magnetoresistive effect has an odd transfer characteristic and conversion coefficient at the level of 8 mV/V/E. The TMN design based on a giant magnetoresistive effect has an even transfer characteristic and a conversion coefficient at the level of 27 mV/V/E. The results of promising design and technological solutions allowing reaching the values of conversion coefficient of TMN at the level exceeding 100 mV/V/E have been shown. The results of the study of the test spin-tunnel magnetoresistive nanostructure (spin-tunnel TMN) with giant magnetoresistive effect, exceeding 100% have been presented. The novelty of the obtained results has been reflected and the perspective of using highly sensitive TMN and creating the non-volatile MRAM on the basis of thin-film magnetoresistive structure with the spin-tunnel magnetoresistive effect have been determined.

scholarly journals Black TiOx Films with Photothermal-Assisted Photocatalytic Activity Prepared by Reactive Sputtering

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2508
Author(s):  
Quan Mao ◽  
Meng Liu ◽  
Yajie Li ◽  
Yuquan Wei ◽  
Yong Yang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Magnetron Sputtering ◽  
High Light ◽  
Chemical Compositions ◽  
Practical Application ◽  
Dc Magnetron Sputtering ◽  
Optical Absorbance ◽  
Low Efficiency ◽  
Tio2 Phase ◽  
Photocatalytic Tio2

Titanium oxide is widely applied as a photocatalyst. However, its low efficiency and narrow light absorption range are two main disadvantages that severely impede its practical application. In this work, black TiOx films with different chemical compositions were fabricated by tuning target voltage and controlling O2 flow during reactive DC magnetron sputtering. The optimized TiOx films with mixed phases (TiO, Ti2O3, Ti3O5, and TiO2) exhibited fantastic photothermal and photocatalytic activity by combining high light-absorptive Ti2O3 and Ti3O5 phases with the photocatalytic TiO2 phase. The sample prepared with oxygen flow at 5.6 ± 0.2 sccm and target voltage near 400 V exhibited excellent optical absorbance of 89.29% under visible light, which could improve surface temperature to 114 °C under sunlight. This film could degrade Rhodamine-B up to 74% after 150 min of UV irradiation. In a word, this work provides a guideline for fabricating black TiOx films with photothermal-assisted photocatalytic activity by reactive DC magnetron sputtering, which could avoid the usage of hydrogen and is convenient for quantity preparation.

scholarly journals Co/Cu/Co Pseudo Spin-Valve System Prepared by Magnetron Sputtering with Different Argon Pressure

2015 ◽  
Vol 644 ◽  
pp. 211-214 ◽  
Author(s):  
A.V. Svalov ◽  
A.N. Sorokin ◽  
P.A. Savin ◽  
Alfredo García-Arribas ◽  
A. Fernández ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Spin Valve ◽  
Spin Rotation ◽  
Argon Pressure ◽  
Dc Magnetron Sputtering ◽  
Soft Layer ◽  
Valve System ◽  
Magnetic Layers ◽  
Moderate Field ◽  
The Difference

Thin Co films were fabricated by DC magnetron sputtering. The effect of argon pressure on the microstructure, surface morphology and magnetic properties of the samples was systematically studied. It was found that with the increase of argon pressure, the sharpness of the crystalline texture of the samples declines, the roughness of film surfaces and the coercivity of the films increase. Based on these results, a Co/Cu/Co pseudo spin-valve system was designed and the corresponding structures were fabricated. The difference in coercivity of magnetic layers was obtained by deposition of the Co layers at different Ar pressures. Change of the resistance of this trilayer is induced at a moderate field by the spin rotation in the soft layer with lower coercivity.

Method of numerical estimating aerial images indicators quality for mapping purposes

2021 ◽  
Vol 968 (2) ◽  
pp. 29-37
Author(s):  
I.A. Anikeeva
Keyword(s):  
Random Noise ◽  
Experimental Studies ◽  
Aerial Images ◽  
Practical Application ◽  
Correct Color ◽  
Numerical Assessment ◽  
Airborne Imaging ◽  
Imaging Sensors ◽  
Color Rendering

The task of assessing the quality of aerial imagery, obtained for mapping, in terms of vision properties, is very ambiguous due to the lack of objective criteria and evaluation methods. A system of indicators for aerial images quality and methods of their numerical assessment is presented. The fine aerial image’s quality is characterized by a set of its structural and gradation properties. The structural properties of the image are determined by the actual spatial resolution and photographic sharpness. Gradation properties of an image are characterized by the correct color rendering, the level of random noise and information completeness indicators – haze, radiometric resolution and the percentage of information loss in illumination and shadows.Methods of evaluating these indicators are formulated, and their recommended and acceptable numerical values are determined analytically. To clarify and correct the obtained analytical recommended and acceptable numerical values of the image quality indicators of their practical application possibility and further experimental studies are necessary with materials, obtained through various airborne imaging sensors for mapping.

scholarly journals Evaluation of the effectiveness of anti-turbulent additives in the oil pipeline transportation

2020 ◽  
Vol 157 ◽  
pp. 02005
Author(s):  
Aleksei Balabukha ◽  
Valentina Zvereva
Keyword(s):  
Friction Coefficient ◽  
Experimental Studies ◽  
Computer Application ◽  
Eastern Siberia ◽  
Practical Application ◽  
Pipeline Transportation ◽  
Pressure Losses ◽  
Oil Pipeline ◽  
Oil Pipelines ◽  
High Degree

The authors of the article have developed the computer application allows to determine the value of the friction coefficient λ and anti-turbulent additives efficiency with a high degree of accuracy. The program can be used in the calculations and design of oil pipelines. The paper presents experimental studies of the effect anti-turbulent additives on the magnitude of pressure losses during fluid movement through pipes. The data gained by the developed computer program has been proved by the data of practical application of additives in the real oil pipeline transportation system called Eastern Siberia-Pacific Ocean oil pipeline.

Creating and Studying of Enterosorbent with Harsh-Fixed Antioxidants which Have Enzymatic Properties

2020 ◽  
Vol 299 ◽  
pp. 1024-1032
Author(s):  
Alfiya M. Kapizova ◽  
Tamara V. Alikova ◽  
Luisa V. Omarieva
Keyword(s):  
Hydrogen Peroxide ◽  
Antioxidant Enzymes ◽  
Gastrointestinal Tract ◽  
Antioxidant Properties ◽  
Experimental Studies ◽  
Enzymatic Properties ◽  
Practical Application ◽  
Sorption Concentration

The enterosorbent-antioxidant is created on the basis the silica clay of the Astrakhan region as a result of theoretical and experimental studies. The antioxidant properties enterosorbent SV-1-AO were studied. The studies to elucidate the possible deactivation of hydrogen peroxide in the gastrointestinal tract of animals in the application of enterosorbent SV-1-AO were carried out. The practical application of the product of the sorption concentration of antioxidant enzymes to ensure the safety of life is shown

Receiving and Research of Diamond-Like PVD-Coating

2015 ◽  
Vol 1088 ◽  
pp. 391-394
Author(s):  
Dmitry M. Kononov ◽  
Alexei V. Zhdanov ◽  
Valentin V. Morozov
Keyword(s):  
Magnetron Sputtering ◽  
Tribological Properties ◽  
Experimental Studies ◽  
Pvd Coatings ◽  
Mechanical And Tribological Properties ◽  
Pvd Coating

The article deals with producing diamondlike-PVD-coatings based on carbon: a-C and a-C:H and MeN/CNx. These types of coatings were prepared by magnetron sputtering materials in vacuum. The results of experimental studies of their mechanical and tribological properties and recommendations for use in industry

The Influence of Si on Magnetic and Magneto-Optical Properties of Co/Si/Co Thin-Film Systems

2015 ◽  
Vol 233-234 ◽  
pp. 653-656 ◽  
Author(s):  
Elena E. Shalygina ◽  
Elena A. Gan’shina ◽  
Anna M. Kharlamova ◽  
Aleksander N. Mukhin ◽  
Galina V. Kurlyandskaya ◽  
...  
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Magnetron Sputtering ◽  
Layer Thickness ◽  
Exchange Coupling ◽  
Structural Features ◽  
Magnetic Saturation ◽  
Antiferromagnetic Exchange ◽  
Saturation Field ◽  
Magnetic Layers

The magnetic and magneto-optical properties of the Co/Si/Co thin-film samples obtained by magnetron sputtering were investigated employing magnetooptical techniques. The thickness of the Co layers was equal to 5 nm, and Si layer thickness varied in the interval of 0.2 to 3.2 nm. The magnetic saturation field of the samples under study was found to oscillate in the magnitude with the change of the Si layer thickness. This result was explained by structural features of the Co/Si/Co multilayers and the presence of the antiferromagnetic exchange coupling between magnetic layers via the silicon interlayer. The peculiarities of the magneto-optical spectra of the Co/Si/Co samples were measured and discussed.

Sign in / Sign up

Export Citation Format

Share Document