نتایج جستجو برای: nano ferrites
تعداد نتایج: 51769 فیلتر نتایج به سال:
Cooling rates of 10 -3 K/yr. permit naturally occurring Mn-Zn ferrites (franklinltes) to be in thermodynamic equilibrium at ambient temperatures with respect to both electrostatic and elastic energies. The elastic strain energy resulting from the occupancy of the A sites by ions of differing sizes is minimized by clustering of.Mn and Zn in different regions of a D/ crystal. Using Fe NGR, these ...
Magnetic nanoparticles, which exhibit a variety of unique magnetic phenomena that are drastically different from those of their bulk counterparts, are garnering significant interest since these properties can be advantageous for utilization in a variety of applications ranging from storage media for magnetic memory devices to probes and vectors in the biomedical sciences. In this Account, we di...
جفت شدن آلدهیدها با ارتوآمینوفنول و حلقه زایی ارتوهیدروکسی آریلیدین آنیلین ها یا بازهای شیف فنولی دو روش کلاسیک برای تهیه بنزواکسازول می باشد. در این کار nano-?-al2o3/bf3-nرا به عنوان یک اسید جامد تهیه نمودیم که برای اثبات وجود اتم b در nano-?-al2o3 طیف های xrd, ft-ir نانو گاما آلومینا و نانوگاما آلومینا بورتری فلورید را به طور جداگانه بررسی نمودیم. در این کار تحقیقاتی مشتقات 2-هیدروکسی آریل-...
The spinel ferrites are famous due to their unique electrical and magnetic performance. current inspection is about the features of Holmium (Ho) substituted Co-Zn-ferrites (Co0.6Zn0.4HoxFe2−xO4; where x = 0.0 0.1). Single-phase cubic configuration prepared was perceived from X-ray diffraction data. sample has one order larger direct (dc) resistivity as compared un-substituted sample. substituti...
Ferrites are important magnetic materials used in electronic devices. Nanocomposites of ferrites with TiO2, SiO2 and carbon quantum dots have gained recent interest due to their unique advantages, such as high chemical stability, surface-active sites, specific surface area, non-toxicity, excellent optical properties, tunable porosity. In the present review, general adaptable coprecipitation, so...
Theoretical estimates of phase shifter performance as a function of material parameters are presented by examining the results obtained from the small perturbation model used by Button and Lax and from the fully ierrite loaded, parallel plane waveguide model used by Suhl «And Walker. The extension of Suhi's theory on nonlinear effects at high power by Fletcher and Silence is applied to relate t...
The structural, magnetic and electronic properties of transition metal oxides reflect in atomic charge, spin and orbital degrees of freedom. Resonant x-ray scattering (RXS) allows us to perform an accurate investigation of all these electronic degrees. RXS combines high-Q resolution x-ray diffraction with the properties of the resonance providing information similar to that obtained by atomic s...
The ferrite process is an established method for treating wastewaters containing dissolved toxic metals, using precipitation at temperatures above 65 °C. Various ambient-temperature operation methodologies have also been proposed, but the effects of temperature reduction on product stability, and on the extent of isomorphous substitution (in terms of x in Me(x)Fe(3-x)O(4), Me representing a non...
In recent years, multifunctional materials contained simultaneous ferroelectric and ferromagnetic ordering have been realized. Here, a real time room temperature adaptive materials system, which demonstrates an RF magnetodielectric (MD) response, i.e., CexY3-xFe5O12 (x = 0, 0.05, 0.1, 0.15, 0.2), is reported. The magnetic and dielectric properties of Ce-doped YIG microwave ferrites processed by...
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