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박종남

Park, Jongnam
Materials and Chemistry Lab.
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Synthesis, characterization, and magnetic properties of uniform-sized MnO nanospheres and nanorods

Author(s)
Park, JongnamKang, EABae, CJPark, JGNoh, HJKim, JYPark, JHHyeon, T
Issued Date
2004-09
DOI
10.1021/jp048229e
URI
https://scholarworks.unist.ac.kr/handle/201301/7002
Fulltext
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=4544274458
Citation
JOURNAL OF PHYSICAL CHEMISTRY B, v.108, no.36, pp.13594 - 13598
Abstract
Uniform-sized MnO nanospheres and nanorods were fabricated by the thermal decomposition of Mn-surfactant complexes. The particle sizes of the nanospheres were varied. from 5 to 40 nm by changing the surfactant. The shape of the particles could be controlled by varying the experimental conditions. The synthesized MnO nanorods have diameters ranging from 7 to 10 nm, and lengths ranging from 30 to 140 nm. Structural characterization using X-ray powder diffraction, X-ray absorption spectroscopy, and high-resolution transmission electron microscopy revealed that the nanoparticles are core/shell structures with a MnO core and a thin Mn3O4 shell. The MnO nanoparticles exhibited very interesting magnetic properties. For example, the MnO nanorods with dimensions of 7 nm x 33 nm showed two blocking temperatures at 35 and 280 K, respectively.
Publisher
AMER CHEMICAL SOC
ISSN
1520-6106

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