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Structural, magnetic and thermal properties of one-dimensional CoFe2O4 microtubes
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Lu, Zhou-li, Gao, Peng-zhao, Ma, Rui-xue, Xu, Jia, Wang, Zheng-he and Rebrov, Evgeny V. (2016) Structural, magnetic and thermal properties of one-dimensional CoFe2O4 microtubes. Journal of Alloys and Compounds, 665 . pp. 428-434. doi:10.1016/j.jallcom.2015.12.262 ISSN 0925-8388.
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Official URL: http://dx.doi.org/10.1016/j.jallcom.2015.12.262
Abstract
One-dimensional CoFe2O4 microtubes have been prepared via a simple template-assembled sol–gel method. Influence of calcination temperature on structural and magnetic properties, heat capacity and specific heating rate under radiofrequency field 295 kHz was studied. A CoFe2O4 spinel was the main phase in all samples. As the calcination temperature increased, the average crystal size increased from 34.1 to 168 nm and the specific surface area decreased from 85.7 to 8.5 m2 g−1. When calcined at 1073 K, porous microtubes with a narrow size distribution in the range between 2.0 and 2.5 μm and a length to diameter ratio exceeding 20 were obtained. The heat capacity of the microtubes calcined at 973 K was 140.81 J mol−1 K−1 at 395 K, being close to the theoretic value. The sample calcined at 973 K showed highest rate of 0.293 K s−1 mg−1.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TN Mining engineering. Metallurgy | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Ferrites (Magnetic materials) -- Heat treatment, Ferrites (Magnetic materials) -- Thermal properties | ||||||||
Journal or Publication Title: | Journal of Alloys and Compounds | ||||||||
Publisher: | Elsevier BV | ||||||||
ISSN: | 0925-8388 | ||||||||
Official Date: | 25 April 2016 | ||||||||
Dates: |
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Volume: | 665 | ||||||||
Page Range: | pp. 428-434 | ||||||||
DOI: | 10.1016/j.jallcom.2015.12.262 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 3 November 2017 | ||||||||
Date of first compliant Open Access: | 7 November 2017 | ||||||||
Funder: | Royal Academy of Engineering (Great Britain), Engineering and Physical Sciences Research Council (EPSRC), Hunan, China (Province). Science and Technology Program, European Research Council (ERC) | ||||||||
Grant number: | 2012WK302 (Hunan, China (Province). Science and Technology Program), RFMiFiCS (ERC) |
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