Publication: PEG-Assisted Synthesis of Mn3O4 Nanoparticles: A Structural and Magnetic Study
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2011-01-01T00:00:00Z
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Durmus, ZEHRA
Tomas, Merve
Baykal, Abdulhadi
Kavas, Huseyin
Toprak, Muhammed S.
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Abstract
We report on the synthesis of Mn3O4 nanoparticles via a polyethyleneglycol (PEG)-assisted hydrothermal route. Crystalline phase was identified as Mn3O4. The crystallite size from X-ray Diffraction (XRD) pattern and particle size from transmission electron microscopy (TEM) micrographs were calculated as 23 +/- 1 nm and 24.5 +/- 0.5 nm, respectively. Nanoparticles (NPs) exhibit mainly tetragonal and spherical morphologies. Magnetic characteristics of Mn3O4 NPs were evaluated by electron spin resonance (ESR) in the temperature range of 24-294 K and the Curie temperature was observed as 43 K. Also the magnetic phases that occur in nanosize Mn3O4 are detected below Tc by this method. The room-temperature paramagnetic characteristic are verified by vibrating sample magnetometry (VSM).
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Durmus Z., Tomas M., Baykal A., Kavas H., Toprak M. S. , -PEG-Assisted Synthesis of Mn3O4 Nanoparticles: A Structural and Magnetic Study-, SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY, cilt.41, ss.768-773, 2011