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Title: Chainlike assembly of magnetite coated with SiO{sub 2} nanostructures induced by an applied magnetic field

Abstract

The assembly of silica coated magnetite nanoparticles into chainlike nanostructures is reported in the presence of applied magnetic field. The coating of SiO{sub 2} onto the surface of magnetite nanoparticles was successfully conducted with the hydrolysis and condensation of tetraethyl orthosilicate. X-ray diffraction and transmission electron microscopy were used to characterize the microstructure and morphology. Vibrating sample magnetometry reveals that the coercivity is dependent on the coating thickness and can be controlled to a certain extent.

Authors:
 [1]; ;  [1];  [2];  [1];  [2];  [3]
  1. Key Laboratory of Opto-Electronic Information Acquisition and Manipulation (Ministry of Education), School of Physics and Materials Science, Anhui University, Hefei 230039 (China)
  2. School of Chemistry and Chemical Engineering, Anhui University, Hefei 230039 (China)
  3. Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026 (China)
Publication Date:
OSTI Identifier:
21144007
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 43; Journal Issue: 5; Other Information: DOI: 10.1016/j.materresbull.2007.06.009; PII: S0025-5408(07)00245-0; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COERCIVE FORCE; HYDROLYSIS; MAGNETIC MATERIALS; MAGNETIC PROPERTIES; MAGNETITE; MICROSTRUCTURE; NANOSTRUCTURES; PARTICLES; SILICA; SILICATES; SILICON OXIDES; SOL-GEL PROCESS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Mingzai, Wu, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, Yongqing, Ma, Yanmei, Liu, Hong, Bi, Qingqing, Fang, Helin, Niu, and Qianwang, Chen. Chainlike assembly of magnetite coated with SiO{sub 2} nanostructures induced by an applied magnetic field. United States: N. p., 2008. Web.
Mingzai, Wu, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, Yongqing, Ma, Yanmei, Liu, Hong, Bi, Qingqing, Fang, Helin, Niu, & Qianwang, Chen. Chainlike assembly of magnetite coated with SiO{sub 2} nanostructures induced by an applied magnetic field. United States.
Mingzai, Wu, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, Yongqing, Ma, Yanmei, Liu, Hong, Bi, Qingqing, Fang, Helin, Niu, and Qianwang, Chen. 2008. "Chainlike assembly of magnetite coated with SiO{sub 2} nanostructures induced by an applied magnetic field". United States.
@article{osti_21144007,
title = {Chainlike assembly of magnetite coated with SiO{sub 2} nanostructures induced by an applied magnetic field},
author = {Mingzai, Wu and Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026 and Yongqing, Ma and Yanmei, Liu and Hong, Bi and Qingqing, Fang and Helin, Niu and Qianwang, Chen},
abstractNote = {The assembly of silica coated magnetite nanoparticles into chainlike nanostructures is reported in the presence of applied magnetic field. The coating of SiO{sub 2} onto the surface of magnetite nanoparticles was successfully conducted with the hydrolysis and condensation of tetraethyl orthosilicate. X-ray diffraction and transmission electron microscopy were used to characterize the microstructure and morphology. Vibrating sample magnetometry reveals that the coercivity is dependent on the coating thickness and can be controlled to a certain extent.},
doi = {},
url = {https://www.osti.gov/biblio/21144007}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 5,
volume = 43,
place = {United States},
year = {2008},
month = {5}
}