نتایج جستجو برای: nano spinel

تعداد نتایج: 54227  

Journal: :Dalton transactions 2011
Partha Mahata Debajit Sarma C Madhu A Sundaresen Srinivasan Natarajan

A hydrothermal reaction of Mn(OAc)(2)·4H(2)O, Co(OAc)(2)·4H(2)O and 1,2,4 benzenetricarboxylic acid at 220 °C for 24 h gives rise to a mixed metal MOF compound, [CoMn(2){C(6)H(3)(COO)(3)}(2)], I. The structure is formed by the connectivity between octahedral CoO(6) and trigonal prism MnO(6) units connected through their vertices forming a Kagome layer, which are pillared by the trimellitate. Ma...

Journal: :Journal of Inorganic and Organometallic Polymers and Materials 2021

Divalent ferrite nano-crystalline materials subjected to shock wave recovery analysis bringing about prolific outcomes have received widespread attention among the scientists due their outstanding contribution that has fueled enrichment of science involving high-pressure ferrites which act as focal-point current research theme. On those lines, we intend provide Raman spectroscopic and electroch...

Journal: :Powders 2023

Here, we demonstrate that nano–sized Mn–Ni–Co–O powder can be prepared at a low temperature via co–precipitation method. In this work, Mn2+ was partially oxidized to Mn3+ ions in an aqueous solution by adding oxidizing agent (H2O2). The co-presence of and cations enabled the precipitated products well-crystallized calcining as 650 °C, forming pure cubic spinel structure. pellets fabricated from...

Journal: :Nanoscale 2012
Gabriel Caruntu Amin Yourdkhani Marian Vopsaroiu Gopalan Srinivasan

The magnetoelectric effect that occurs in multiferroic materials is fully described by the magnetoelectric coupling coefficient induced either electrically or magnetically. This is rather well understood in bulk multiferroics, but it is not known whether the magnetoelectric coupling properties are retained at nanometre length scales in nanostructured multiferroics. The main challenges are relat...

2014
N D Kandpal

Nano-sized crystallites of iron oxide were synthesized by cost effective co-precipitation method. X-ray diffraction pattern indicated that the magnetic nanoparticles were pure Fe3O4 with a spinel structure. The nanoparticles were characterized by X-ray diffraction (XRD), Fourier-Transform Infrared (FT-IR) spectra, Transmission electron microscope (TEM) and magnetization measurement of the nanop...

Journal: :Nanoscale 2012
Junli Zhang Jiecai Fu Guoguo Tan Fashen Li Caiqin Luo Jianguo Zhao Erqing Xie Desheng Xue Haoli Zhang Nigel J Mellors Yong Peng

NiFe(2)O(4) multi-particle-chain nanofibres have been successfully fabricated using electrospinning followed by calcination, and their morphology, chemistry and crystal structure were characterized at the nanoscale. Individual NiFe(2)O(4) nanofibres were found to consist of many nanocrystallites stacked along the nanofibre axis. Chemical analysis shows that the atomic ratio of Ni : Fe is 1 : 2,...

Journal: :Journal of synchrotron radiation 2015
Jih Young Yuh Shan Wei Lin Liang Jen Huang Hok Sum Fung Long Life Lee Yu Joung Chen Chiu Ping Cheng Yi Ying Chin Hong Ji Lin

During the last 20 years, beamline BL08B has been upgraded step by step from a photon beam-position monitor (BPM) to a testing beamline and a single-grating beamline that enables experiments to record X-ray photo-emission spectra (XPS) and X-ray absorption spectra (XAS) for research in solar physics, organic semiconductor materials and spinel oxides, with soft X-ray photon energies in the range...

Journal: :Science of Sintering 2023

Glycine assisted self-combustion method resulted in fabrication of cobalt-manganese ferrite substituted by zinc ( Zn ) element. The as-synthesized Co-Mn was subjected to heat treatment at 600?C and 800?C for 2h. Effects on the structural, morphological, surface magnetic properties ZnCoMn were studied. These characterized using various techniques including TGA-DTGA, FTIR, XRD, SEM, EDX, TEM VSM....

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم کشاورزی 1393

در این مطالعه، فرمولاسیون¬های نانوی نور تخریب¬پذیر و زیست¬سازگار ایمیداکلوپرید و ایندوکساکارب، به واسطه¬ی کپسوله کردن مستقیم هر کدام ازآنها با کوپلیمرهای خطی- دندریتیک پلی¬سیتریک¬اسید-پلی¬اتیلن¬گلیکول-پلی¬سیتریک¬اسید (pca-peg-pca) تهیه شدند. سنتز این نانوآفت¬کش¬ها به دو صورت بدون کاربرد نانوذرات tio2 (nano-ind و nano-imi) و با کاربرد نانوذرات tio2 (nano-ind/tio2 و nano-imi/tio2) انجام شد. فرمول...

Journal: :نشریه دانشکده فنی 0
علی صابری حسین سرپولکی فرهاد گلستانی فرد

low water-wettability and oxidation resistance of graphite have limited its application in carbon containing refractory castables. the aims of this study were improvement of water-wettability and the oxidation resistance of natural flaky graphite by applying an oxide coating on its surface. to develop the coating, magnesium aluminate spinel sol was formulated via a citrate-nitrate route and gra...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید