Nanostructured magnetite (Fe3O4) thin films prepared by sol–gel method

Tang, Nujiang; Zhong, Wen‐De; Jiang, Hongyi; Wu, Xiaoyang; Liu, W.; Du, Yu

doi:10.1016/j.jmmm.2004.04.022

Cited by 85 publications

(30 citation statements)

References 8 publications

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“…It is ferromagnetic with a high Curie temperature of 858 K and electronically conducting with highly spin-polarized conduction electrons. Consequently, it is an interesting candidate for magnetic recording media or spin-valve applications (Tang et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Role of Reductant on the Size Control of Fe3O4 Nanoparticles on Rice Straw

Khandanlou¹,

Ahmad²,

Shameli³

et al. 2013

BioResources

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The goal of this study was to prepare nanocomposites of rice straw coated with different percentages of Fe 3 O 4 nanoparticles (Fe 3 O 4 -NPs) [1.0, 5.0, 10.0, and 20.0 wt. %]. In this process, the size of Fe 3 O 4 -NPs changed with varying volumes of NaOH (2M). The Fe 3 O 4 -NPs were precipitated with sodium hydroxide from a solution of Fe(II) and (III) chloride in water under ambient conditions and N 2 gas by the quick precipitation method using urea as a stabilizer. The rice straw/Fe 3 O 4 nanocomposites (NCs) prepared by this method had magnetic properties in percentages higher than ten (10 wt. %). When the volume of NaOH increased, Fe 3 O 4 -NPs with uniform size and better distribution could be prepared, which means that the size of the NPs decreased as the reducing agent was increased. Transmission electron microscopy (TEM) showed that Fe 3 O 4 -NPs in rice straw were spherical with diameters from 18.47 to 9.93 nm. The SEM results show that the structure of rice straw underwent no particular change. EDX indicated the presence of Fe 3 O 4 -NPs on the surface of rice straw. X-ray powder diffraction (PXRD) indicated that the magnetic Fe 3 O 4 -NPs were pure and that the particles were small. The FT-IR results showed that the Fe 3 O 4 -NPs were successfully coated on the surface of rice straw.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Role of Reductant on the Size Control of Fe3O4 Nanoparticles on Rice Straw

Khandanlou¹,

Ahmad²,

Shameli³

et al. 2013

BioResources

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“…Of the magnetic materials, Fe 3 O 4 particles are the most frequently investigated ones due to their good magnetization and high surface area. Up to now, many different methods have been developed to prepare Fe 3 O 4 nano particles (NPs), including co-deposition, sol-gel techniques, microwave plasma synthesis and solvothermal methods [7][8][9][10]. Among these methods, solvothermal process has the advantages of mild synthetic condition, simple manipulation and large scale-up production.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Surface Modification of Monodisperse Fe3O4 Nanoparticles

Hu¹,

Qin²,

Li³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract. Monodisperse Fe 3 O 4 Nano particles have been successfully synthesized by solvothermal method using water and ethylene glycol as solvents, and their sizes could be controlled by changing the ratio of water to ethylene glycol. Subsequent surface modification of Fe 3 O 4 had been carried out using tetraethyl orthosilicate and 3-Aminopropyl triethoxysilane as modification agents. The magnetic materials have been characterized by scanning electron microscopy, X-ray diffraction and Fourier-transform infrared spectroscopy. It was verified that SiO 2 layers have been coated on the surface of Fe 3 O 4 and NH 2 -groups have been grafted on the spherical surface of magnetic materials.

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“…La técnica de recubrimiento por inmersión [1], [2] ha venido ganando una acogida importante en los laboratorios dedicados al recubrimiento y procesamiento de materiales para diferentes aplicaciones, entre ellas el desarrollo de dispositivos ópticos y opto-electrónicos [3], dispositivos espintrónicos [4], [5], [6], [7] materiales biocompatibles [8], materiales resistentes a la corrosión y el desgaste [9], [10] y también aplicaciones decorativas. La técnica se caracteriza por la sencillez y facilidad de implementación con las herramientas de hardware y software disponibles en la mayoría de laboratorios de investigación científica y docencia.…”

Section: Introductionunclassified

Diseño y construcción de un reactor mecatrónico para el crecimiento de películas delgadas por la técnica de recubrimiento por inmersión

2014

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ResumenSe presenta el diseño y construcción de un sistema mecatrónico automatizado para el crecimiento de películas delgadas por la técnica de recubrimiento por inmersión. El sistema consta de un porta sustrato que realiza desplazamientos verticales entre dos posiciones ajustables. El movimiento del porta sustrato es controlado por una cadena de transmisión accionada por un motor de corriente continua. Los finales de recorrido del porta-sustrato son sensados por micro-switches colocados en los extremos del intervalo de movimiento. La adquisición de la señal de los micro-switches y la generación de la señal de control para el motor son realizadas por una tarjeta de adquisición de datos National Instruments USB 6353 . Desde una interfaz gráfica desarrollada en LabVIEW el usuario puede programar todos 1 Ph. D., avelas26@eafit.edu.co, Universidad EAFIT, Medellín, Colombia. 2Magister en Química,

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Nanostructured magnetite (Fe3O4) thin films prepared by sol–gel method

Cited by 85 publications

References 8 publications

Investigation of the Role of Reductant on the Size Control of Fe3O4 Nanoparticles on Rice Straw

Investigation of the Role of Reductant on the Size Control of Fe3O4 Nanoparticles on Rice Straw

Preparation and Surface Modification of Monodisperse Fe3O4 Nanoparticles

Diseño y construcción de un reactor mecatrónico para el crecimiento de películas delgadas por la técnica de recubrimiento por inmersión

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