نتایج جستجو برای: manganese ferrite

تعداد نتایج: 30352  

2014
A. Raj Kumar Ravi Kumar Shilpa Chakra Venkateshwara Rao

The successful application of various nanoplatforms in medicine under in vitro conditions has generated some interest in medicine-nanotechnology. The spinel-type MnZn ferrite nano powders were synthesized by Solution Combustion Synthesis (SCS) method. The important classes of soft magnetic materials Mn-Zn ferrites have high magnetic permeability and low power losses.Mn-Zn-Fe2O4 have a spinal st...

2011
Sunghyun Yoon Kannan M. Krishnan

The temperature dependence of the effective magnetic anisotropy constant, K(T), of MnFe2O4 nanoparticles is obtained based on superconducting quantum interference device magnetometry measurements. The variation of the blocking temperature, TB, as a function of particle radius, r, is first determined by associating the particle size distribution and the anisotropy energy barrier distribution ded...

2017
Weien Lai Oday Mazin Abdulmunem Pablo del Pino Beatriz Pelaz Wolfgang J. Parak Qian Zhang Huaiwu Zhang

This paper presents a significant effect of manganese ferrite nanoparticles (MnFe2O4 NPs) on the increase of the surface photoconductivity of semiconductors. Herein, the optical characterization of photo-excited carriers of silicon coated with MnFe2O4 NPs was studied by using THz time-domain spectroscopy (THz-TDs). We observed that silicon coated with MnFe2O4 NPs provided a significantly enhanc...

Journal: :journal of nanostructures 2015
m. zahraei a. monshi d. shahbazi-gahrouei m. amirnasr b. behdadfar

manganese zinc ferrite nanoparticles (mzf nps) were synthesized by using a direct, efficient and environmental friendly hydrothermal method. to improve the colloidal stability of mzf nps for biomedical applications, nps were coated with chitosan by ionic gelation technique using sodium tripolyphosphate (tpp) as crosslinker. the synthesized nps were characterized by x ray diffraction (xrd) analy...

Journal: :Journal of the Physical Society of Japan 1964

Journal: :The journal of physical chemistry. B 2005
Stephanie G Grancharov Hao Zeng Shouheng Sun Shan X Wang Stephen O'Brien C B Murray J R Kirtley G A Held

Monodisperse magnetic nanoparticles (NPs) could enable the ultra-sensitive magnetic detection of biological analytes. However, rendering these particles biocompatible has remained a challenge. We report the bio-functionalization and detection of 12-nm manganese ferrite NPs. We have achieved the site-specific binding of biotin-functionalized NPs onto avidin-patterned silicon oxide substrates and...

Journal: :Advanced materials proceedings 2021

Manganese ferrite nanoparticles with chemical formula MnFe2O4 have been synthesized by low temperature co-precipitation method. The structural and optical properties of the were studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX), fourier transform infra-red (FTIR) UV-visible absorption spectroscopy. XRD confirm pure spinel phase forma...

2016
Y. Tamaura M. Kojima N. Hasegawa M. Tsuji K. Ehrensberger A. Steinfeld

A cation-excess (Ni,Mn) ferrite N~o.~zMno.51Fe2.0504.0 with a single phase was synthesized by heating the mixture of corresponding metal salts and oxide in 5% 02175% C02120% N2 gas mixture for 18h at 1100C. It could be thermochemically activated to form a cation-excess ferrite Nio,5z~l+s~Mno.51~l+6~Fe2~05~1+6~0440 in N2 gas at elevated temperature: The ( value was 0.03 1 at 1100C. The activated...

2017
J. Baszynski

We observed two surface spin-wave modes in ferromagnetic resonance in monocrystalline, epitaxial layers of manganese femte (NEFL). The layers, 2 3pn thick, were obtained by CVD on monocrystalline MgO substrates. In MEFL, observations were performed at room temperature and a frequency of 26.6 GHz. The critical angles for which the surface modes vanish amount to 48' and 37', respectively, for lin...

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