نتایج جستجو برای: mgo nanoparticle

تعداد نتایج: 38074  

Journal: :Physical chemistry chemical physics : PCCP 2016
Igor A Pašti Natalia V Skorodumova

Doping of simple oxide materials can give rise to new exciting physical and chemical properties and open new perspectives for a variety of possible applications. Here we use density functional theory calculations to investigate the B-, C- and N-doped MgO(001) surfaces. We have found that the investigated dopants induce magnetization of the system amounting to 3, 2 and 1 μB for B, C and N, respe...

Journal: :The Journal of chemical physics 2012
A Ben Houria O Yazidi N Jaidane M L Senent M Hochlaf

Accurate ab initio calculations are performed to investigate the stable isomers of [MgO(3)](+) and its lowest electronic states at both molecular and asymptotic regions. The calculations are done using large basis sets and configuration interaction methods including the complete active space self-consistent field, the internally contracted multi-reference configuration interaction, the standard...

Journal: :Dental materials journal 2002
Shigeyuki Takashiba Zutai Zhang Yukimichi Tamaki

In our previous study, we investigated ammonia-free phosphate-bonded investments using Mg (H2PO4)2 powder. The purpose of the present study was to attempt usage of 50 wt% Mg (H2PO4)2 solution instead of powder. Magnesium oxide (MgO) was prepared as a binder and cristobalite was selected as a refractory. After arranging six kinds of experimental investments (A-F) with different cristobalite/MgO ...

Journal: :international journal of nanoscience and nanotechnology 2012
b. maddah h. chalabi

nanocrystalline magnesium oxides were prepared by sol–gel method and were characterized by x-ray diffraction, n2-bet, sem and infrared spectroscopy techniques. the results confirmed the formation of nano- mgo materials with crystallite size in range of 5-20 nm and surface areas of 336-556m2/g. the product has been tested as destructive adsorbent for the decontamination of (2-chloroethyl) ethyl ...

ژورنال: :پژوهش فیزیک ایران 0
مهین اشراقی m. eshraghi najafabad, iranمرکز نجف آباد پرویز کاملی p. kameli isfahan university of technology, isfahan, 84156-83111, iranدانشگاه صنعتی اصفهان هادی سلامتی h. salamati isfahan university of technology, isfahan, 84156-83111, iranدانشگاه صنعتی اصفهان اسماعیل عبدالحسینی سارسری e. abdolhosseini sarsari isfahan university of technology, isfahan, 84156-83111, iranدانشگاه صنعتی اصفهان

در این مقاله, دو نمونه همسانگرد(پرس نمونه در غیاب میدان مغناطیسی) و ناهمسانگرد( پرس نمونه در حضور میدان مغناطیسی) از ترکیب la0/8sr0/2mno3 تهیه شده است. برای بررسی خواص ساختاری, مغناطیسی و مغناطومقاومت نمونه­ها از آنالیزهای xrd , sem , همچنین اندازه­گیریهای پذیرفتاری مغناطیسی ac و مغناطومقاومت نمونه­ها استفاده شد. نتایج آزمایشها نشان می­دهد که خواص مغناطیسی در نمونه ناهمسانگرد بهبود پیدا کرده و ...

Journal: :Chemical communications 2013
Esther Carrasco Andreas Aumer Janaina F Gomes Yuichi Fujimori Martin Sterrer

The properties of the interfacial water monolayer on MgO(001) during growth of multilayer ice and, in particular, the dewetting of crystalline ice on MgO(001) are revealed by vibrational sum frequency generation and infrared reflection absorption spectroscopy.

2015
Dipanjan Mazumdar Xiaoyong Liu B. D. Schrag Weifeng Shen Matthew Carter Gang Xiao

Articles you may be interested in Intrinsic spin noise in MgO magnetic tunnel junctions Appl. Thermal stability and spin-transfer switchings in MgO-based magnetic tunnel junctions with ferromagnetically and antiferromagnetically coupled synthetic free layers Appl.

Journal: :Chemical communications 2013
Zhi-Min Cui Zhe Chen Chang-Yan Cao Wei-Guo Song Lei Jiang

Flower-like MgO is a highly effective catalyst for the synthesis of dimethyl carbonate through the transesterification method, and coating the catalyst with mesoporous silica significantly enhances the stability of the MgO catalyst.

Journal: :Physical chemistry chemical physics : PCCP 2014
Luca Sementa Giovanni Barcaro Fabio R Negreiros Alessandro Fortunelli

In the present work we explore via first-principles simulations whether the ligand/cluster/support catalytic complex generated by CO oxidation over silver trimers deposited on the regular MgO(100) surface - i.e. a Ag3/carbonate or Ag3(CO3)/MgO(100) species - can be used as a catalyst in a different reaction: the selective oxidation of NO to NO2 (or NOox). The Ag3(CO3)/MgO(100) complex is first ...

2017
R T De Silva M M M G P G Mantilaka K L Goh S P Ratnayake G A J Amaratunga K M Nalin de Silva

Mechanically robust alginate-based nanofibrous scaffolds were successfully fabricated by electrospinning method to mimic the natural extracellular matrix structure which benefits development and regeneration of tissues. Alginate-based nanofibres were electrospun from an alginate/poly(vinyl alcohol) (PVA) polyelectrolyte complex. SEM images revealed the spinnability of the complex composite nano...

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