نتایج جستجو برای: نانوسیمهای nizn
تعداد نتایج: 121 فیلتر نتایج به سال:
نانوسیم های coxmn1-x به روش الکتروانباشت متناوب در قالب اکسید آلومینیوم آندی ساخته و تاثیر غلظت منگنزدر الکترولیت بر خواص مغناطیسی آن ها بررسی شد. نمونه ها با استفاده از میکروسکوپ الکترونی روبشی، میکروسکوپ نیروی اتمی، پراش پرتو x و مغناطومتر agfm مورد مطالعه قرار گرفتند. نتایج مربوط به اندازه گیری حلقه ی پسماند نشان می دهد که افزایش مقدار منگنز در ابتدا باعث کم شدن مقدار وادارندگی می شود به طور...
ساخت نانوسیمهای نیکل و آلیاژی نیکل- آهن در دما و جریان اولیه ی متفاوت در قالب آلومینای حفره دار و بررسی خواص مغناطیسی با استفاده از حلقه پسماند بدست آمده توسط دستگاه vsm و بررسی خواص ساختاری، ریخت شناسی و ترکیب شیمیایی با استفاده از دستگاه هایxrd ، semو xrf
Common-mode choke inductors are useful tools for resolving grounding issues in large detector systems. Using inductive components on cryogenic pre-amplifier boards has so far been prevented by the poor low-temperature performance of common ferrite materialssuch as NiZn and MnZn. Recentlydeveloped nanocrystallineand amorphous materials promise improved up to point where using magnetics at liquid...
The aim of this work is to present radar cross section (RCS) measurements of a panel constituted of a flat aluminum plate with and without radar absorbing materials (RAM) type thin rubber sheets, in the range of 8 – 12 GHz. Two different loads were evaluated in the RAM formulation: 1. Magnetic (ferrites MnZn, NiZn and MgZn based), and 2. Dielectric (conducting polymers polyaniline based). The m...
Resonant power conversion at MHz frequencies is useful for miniaturization of power electronics, but requires resonators or inductors with high efficiency. Because litz wire is not effective above several MHz, an alternative winding structure for inductors is required for operation at these frequencies. In this paper, we present resonators with a multi-layer foil winding which can be constructe...
Heterobimetallic NiZn complexes featuring metal centers in distinct coordination environments have been synthesized using diimine-dioxime ligands as binucleating scaffolds. A tetramethylfuran-containing ligand derivative enables a stable one-electron-reduced S = 1/2 species to be accessed using Cp2Co as a chemical reductant. The resulting pseudo-square planar complex exhibits spectroscopic and ...
The observation method of photoemission electron microscopy (PEEM) on insulating samples has been established in an extremely simple way. Surface conductivity is induced locally on an insulating surface by continuous radiation of soft X-rays, and Au films close to the area of interest allow the accumulated charges on the insulated area to be released to ground level. Magnetic domain observation...
In this research, electroplated magnetically isotropic and anisotropic soft alloys and screen-printed soft ferrites applicable to micromachined micromagnetic devices are fabricated and characterized using in situ measurement techniques. Appropriate magnetic materials and deposition methods, such as electroplating and screen-printing techniques, are examined and material test structures are fabr...
Linear sweep voltammetry has been used as an “in situ” technique to characterize thin layers of ZnNi alloys. The zinc dissolution peak potentials from ZnNi deposits were found to be more noble [El,= -0.7V (SCE) and Ez,= -0.575 V (SCE)] than those of the pure metal ions [-OX3 V (SCE)] due to a formation of two ZnNi intermediate phases 7 and 6 respectively. The effect of d c and pulse parameters ...
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