Journal
MATERIALS LETTERS
Volume 83, Issue -, Pages 195-197Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2012.06.019
Keywords
Magnetic materials; Co3O4; Magnetic property; Particle morphology
Funding
- National Natural Science Foundation of China [20963011, 21163021, 21063014]
- Xinjiang University [BS090120]
- Natural Science Foundation of Xinjiang, China [2011211A001, 2010211A09]
- Chinese Ministry of Education [210245]
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Synthesis of nanoaystals with highly symmetric microstructure is a well-known challenge in many fields of science and technology. In this work, Well-defined uniform Co3O4 octahedrons were synthesized via a simple one step microwave reaction, in which different carbon materials were introduced acting not only as secondary heater, but also as morphology directing agent. The crystal-structure and shape of the samples are examined systemically by using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HRTEM). The octahedral Co3O4 obtained by carbon nanotubes (CNTs) assisting microwave process exhibited a weak ferromagnetic property. Its saturation magnetization values (M-s) and coercivity (H-c) values are 234.25 emu/g and 73.513 Oe, respectively. (C) 2012 Elsevier B.V. All rights reserved.
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