نتایج جستجو برای: fe doped zno

تعداد نتایج: 141716  

2010
Ionut Enculescu Monica Enculescu Elena Matei Nicoleta Preda Marian Sima Simon Granville Maria Eugenia Toimil Molares Reinhard Neumann

Spintronics aims at developing a new generation of electronic materials for consumer products based on electron spin rather than on electron charge. Its main objective is the fabrication of new devices based on semiconductor materials with magnetic behavior (so called diluted magnetic semiconductors). These devices combine the manipulation of electrons as classically known in semiconductor devi...

2012
Yong-Il Jung Bum-Young Noh Young-Seok Lee Seong-Ho Baek Jae Hyun Kim Il-Kyu Park

Visible light-emitting Ce-doped ZnO nanorods [NRs] without a post thermal annealing process were grown by hydrothermal method on a Si (100) substrate at a low temperature of 90°C. The structural investigations of Ce-doped ZnO NRs showed that the Ce3+ ions were successfully incorporated into the ZnO lattice sites without forming unwanted Ce-related compounds or precipitates. The optical investig...

2013
C. S. Chen T. G. Liu L. W. Lin X. D. Xie X. H. Chen Q. C. Liu B. Liang W. W. Yu C. Y. Qiu

A simple and versatile approach has been developed to synthesize multi-walled carbon nanotubes/metal-doped ZnO nanohybrid materials (MWNT/M-doped ZnO) by means of the co-deposition method. The experimental results illuminate that MWNTs can be modified by metal-doped ZnO nanoparticles at 450 °C, such as Mn, Mg, and Co elements. Furthermore, the MWNT/Mg-doped ZnO hybrids have been proven to have ...

Journal: :Physical chemistry chemical physics : PCCP 2015
J J Beltrán C A Barrero A Punnoose

The actual role of transition metals like iron in the room temperature ferromagnetism (RTFM) of Fe doped ZnO nanoparticles is still an unsolved problem. While some studies concluded that the Fe ions participate in the magnetic interaction, others in contrast do not believe Fe to play a direct role in the magnetic exchange interaction. To contribute to the understanding of this issue, we have ca...

Journal: :iranian journal of catalysis 0
maryam bordbar department of chemistry, faculty of science, university of qom, qom, iran. solmaz forghani-pilerood faculty of science, payame noor university, tehran, iran. ali yeganeh-faal faculty of science, payame noor university, tehran, iran.

in the present study, co-zno and co-ni-zno nanoparticles were synthesized by sonochemical methods and the structural and optical properties were investigated through fourier transform infrared spectroscopy (ftir), uv-vis spectroscopy, field emission scanning electron microscopy (fe-sem), x-ray diffraction (xrd), and photoluminescence spectroscopy (pl) methods. morphology of nanoparticles obtain...

Un-doped and Cd-doped ZnZrO3/ZnO/ZrO2 nano composites (CDZZ-NCPs) (CD0-4) were synthesized by the hydrothermal method. The nano composites were characterized by various techniques such as Fourier Transform Infra-Red spectroscopy (FT-IR), X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM) and Energy Dispersive X-Ray Analysis (EDS). The photocatalytic properties of CDZZ...

Journal: :physical chemistry research 2015
aziz habibi-yangjeh hadi nouri

in this work, mg-doped zno nanostructures were prepared in water under ultrasonic irradiation for 60 min without using any organic compounds or post preparation treatments. the prepared samples were characterized by x-ray diffraction (xrd), scanning electron microscopy (sem), transmission electron microscopy (tem), energy dispersive analysis of x-ray (edx), diffuse reflectance spectroscopy (drs...

Journal: :Nanoscale 2013
Yefeng Yang Yaguang Li Liping Zhu Haiping He Liang Hu Jingyun Huang Fengchun Hu Bo He Zhizhen Ye

For colloidal semiconductor nanocrystals (NCs), shape control and doping as two widely applied strategies are crucial for enhancing and manipulating their functional properties. Here we report a facile and green synthetic approach for high-quality colloidal Mn doped ZnO NCs with simultaneous control over composition, shape and optical properties. Specifically, the shape of doped ZnO NCs can be ...

2011
Jingyun Gao Qing Zhao Yanghui Sun Guo Li Jingmin Zhang Dapeng Yu

We developed a novel approach to synthesize phosphorus (P)-doped ZnO nanowires by directly decomposing zinc phosphate powder. The samples were demonstrated to be P-doped ZnO nanowires by using scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction spectra, X-ray photoelectron spectroscopy, energy dispersive spectrum, Raman spectra and photoluminescence...

Journal: :iranian journal of radiation research 0
n. banaee department of engineering, science and research branch, islamic azad university, tehran, iran h.a. nedaie radiotherapy oncology department, cancer research center, cancer institute, tehran university of medical sciences, tehran, iran a.r. shirazi department of medical physics and biomedical engineering, faculty of medicine and radiation oncology research centre, cancer institute, tehran university of medical sciences, tehran, iran a.r. zirak laser and optics research school, nstri, tehran, iran s. sadjadi nuclear science and technology research institute, tehran, iran

background: new treatment modalities are developed with the aim of escalating tumor absorbed dose and simultaneously sparing the normal structures. the use of nanotechnology in cancer treatment offers some possibilities including destroying cancer tumors with minimal damage to healthy tissues. zinc oxide nanoparticles (zno nps) are wide band gap semiconductors and seem to have a good effect on ...

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