نظرا للأهمية الكبيرة لتيتانات السترونسيوم في الصناعات التكنولوجية الحديثة
و الأجهزة البصرية و الخلايا الشمسية وغيرها من الاستخدامات ، قمنا في هذا البحث
بتقديم طريقة مبسطة و عالية الفعالية و هي طريقة الاصطناع الصلب من أجل دراسة
و تحضير تيتانات السترونسيومST انطلاقاً من كربونات السترونسيوم و أكسيد
التيتانيوم بنسبة 1:1 و تم دراسة الشروط المثلى للاصطناع.
Due to the importance of Strontium Titanate in modern
technological industries, optical devices, solar cells and other
utilization; in this research we study the synthesis of ST from
SrCO3:TiO2 (1:1).
References used
Ishihara T. Structure and Properties of Perovskite Oxides, Perovskite Oxide for Solid Oxide Fuel Cells, library of congress control, New York (2009) p.1-7
Huang H. H, Chiu H.H, Wu N.C. and Wang M.C.Topics in Electric and Magnetic Ceramics. Chapter 12, Costas Sikalidis Advanced In Ceramics – Electric And Magntic Ceramics, Bioceranics, Ceramics And Enviroment. Croatia , Janeza Trdine , (2011)p. 293
Tang X.G, Chew K.-H, Chan H.L.W, Diffuse phase transition and dielectric tunability of Ba(ZryTi1_y )O3 relaxor ferroelectric ceramics, Hong Kong, PR China (2004) p.1
CaMnO3 was synthesized by a Solid State method. MnO2 and
CaO were used as precursors. The temperature of synthesis was
1100°C. X-ray diffraction analysis (XRD) revealed that the
CaMnO3 was synthesized. XRD results showed that the prepared
compound was polycrystalline and had orothohombic structure.
Zinc Chromate was synthesised by Co-precipitation
method, The synthesised samples were characterized using
X-ray powder diffraction technology (XRD).
Set temperature synthesis at 250 ℃ .
Two ethers coumarin derivatives: 7-phenoxy -4-carboxylic
coumarin (B) and 7- (6,2-di-chloro) -4-carboxylic coumarin (C)
have been synthesized from the 7-hydroxy-4-methy coumarin
(A) as beginning compound and the copper complex [CuPPh3Cl]4
carried on the amberlyst-21 as the eco-friendly catalyst, these ethers
coumarin derivatives have an important biological properties may
be used in the treatment of breast cancer.
This paper discuss the Laser induced breakdown
spectroscopy (LIBS) by using Nd:YAG which is a high energy
pulsed Laser . The laser radiation is focused on solid targets which
are samples of red Copper (99.5%). Most important Plasma
parameters which are electron temperature and density was
measured.
Our research aims to prepare ZnFe2O4 system by
CO-precipitation method in aqueous solution,starting from the
raw materials, and then studying its structure and properties .After
finishing the preparation period, we divided the precipitate in two