نتایج جستجو برای: sol gel auto combustion
تعداد نتایج: 167688 فیلتر نتایج به سال:
Spinel ferrites are attaining huge importance in the modern era, due to their incredible properties, which means they widely used various fields. Therefore, this paper a cost-effective and environmentally friendly preparation of Mg0.25Ni0.25Cu0.5?xCoxFe1.97La0.03O4 (x = 0.0, 0.125, 0.25, 0.375, 0.5) via sol–gel auto-combustion method were carried out. How structural functional properties varied...
food safety is considered as an important world concern. the detection of pathogen and toxic materials in food has an important role in public health care. in recent years, the applications of microbial biosensor have been developed as a new approach for toxicity control. luminescent microbial biosensor is an appropriate biological tool for protection of natural environment. this type of biosen...
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...
Present work reports the synthesis of RE3+ (La3+, and Ce3+) Co2+ co-doped Zn0.75Cu0.25Fe2O4 samples powder using sol-gel auto combustion process. Rietveld refinement established spinel matrix with space group (F d -3 m) suggests that uniform distribution cations at tetrahedral octahedral lattice sites. The comparative study crystallite size (D) was found Scherrer's relation, plot, Williamson-Ha...
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...
در این پایان نامه ابتدا نانو ذرات دی اکسید تیتانیم یا تیتانیا به روش شیمیایی sol-gel در دو فاز آناتاز و روتایل سنتز شده است. سپس این نانو ذرات به کمک الگوهای پراش اشعه x (xrd) طیف سنجی uv-vis و میکروسکوب الکترونی رویشی (sem) مشخصه یابی شده است. الگوی پراش اشعه x و تصاویر sem تشکیل ساختارهای نانومتری دی اکسکیدتیتانیم تهیه شده و به روش sol-gel را تایید می کنند ساختار و میانگین اندازه نانو ذرات به...
Spinel ferrite nanocomposites of Ni1–xZnxFe2O4 (x = 0.25 and 0.75) were synthesized by sol-gel auto-combustion annealed between 250°C 1000°C. A single-phase spinel structure was found through X-ray diffraction (XRD). The crystallite size is in the range 17.55–66.98 nm, lattice parameters are 8.351–8.434 Å. analysis revealed a slight shift peaks towards shorter angles when zinc concentration inc...
................................................................................... viii CHAPTER 1. INTRODUCYION ........................................................... 1 1.1 Motivation ................................................................................. 1 1.2 Outline ..................................................................................... 2 CHAPTER 2. SOL-GEL PHOT...
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