نتایج جستجو برای: sol gel auto combustion method

تعداد نتایج: 1769607  

Journal: :Journal of Superconductivity and Novel Magnetism 2021

Cost-effective and controllable synthesis of M0.25Ni0.15Cu0.25Co0.35Fe2O4 (M2+ = Mg2+, Mn2+, Cd2+) ferrites via the sol–gel auto-combustion technique. The impact divalent cations on structural, dielectric, optoelectrical properties was examined by XRD, FTIR, Raman, LCR, UV–Vis, two probe I-V measurement techniques. crystallite size 52.66 nm, minimum specific surface area observed 5.1507 m2/g fo...

Khorsand, H., Rostami, M.,

The conventional eddy current method for non-destructive inspection of welding joints has limitations that can examine defects to a certain depth below the surface of the sample and is not suitable for determining deep defects. This limitation can be overcome using the SQUID superconducting sensors. The nonstoichiometric composition of YBCO due to its superconducting temperature and desired cri...

M. A. Baghchesara R. Lotfi S. A. Khorrami S. Moradi

Highly sinterable alumina nano-powders have been synthesized by a sol-gel combustion method with glycine asfuel. The preparation involved the thermal decomposition of a chelating agent (fuel)-nitrate gel and theformation of amorphous precursors. The nanopowders calcined at 1100°C were characterized by X-ray powderdiffraction (XRD) and Scanning Electron Microscopy (SEM). It was found that the ch...

عربی, هادی, مؤمنی لاریمی, زبیده, امیرآبادی‌زاده, احمد , حسین زاده, سمیه , کمیلی, مجتبی ,

Gd2O3 nanoparticles were synthesized for the first time by sol-gel combustion method and YBCO high temperature superconductor by sol-gel method. X-ray powder diffraction pattern of the nanoparticles and prepared superconductor showed single phase by both methods. The average size of Gd2O3 nanoparticles, according to the Scherrer formula, computed 29 nm, which is consistent with the results obta...

Journal: :Crystals 2022

In the present work, pure and Cr-doped MoO3 microrods were successfully prepared through sol gel auto combustion method. The phase evaluation microstructural, dielectric, optical properties of synthesized samples investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), an impedance analyzer (1 MHz–3 GHz). All showed hexagonal struc...

Journal: :Journal of Physics: Conference Series 2021

Abstract The effect is reported of substituting the non-magnetic Zn 2+ cations with magnetic Ni cations, and Fe 3+ Al in Ba 0.5 Sr 1.5 11.92 0.08 O 22 on resulting properties. Y-type hexaferrite powders were synthesized by citric acid sol-gel auto-combustion, followed appropriate thermal annealing. saturation magnetization values ( M s ) a field 50 kOe 36 emu/g 30 at 4.2 K 300 K, respectively. ...

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