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- 저자 : Seong Noh Lee(이성노) (검색결과 1 건)
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Hyperthermia Properties of Fe₃O₄ Nanoparticle Synthesized by Hot-injection Polyol Process
Seong Noh Lee(이성노),Taejoon Kouh(고태준),In-Bo Shim(심인보) 한국자기학회 2014 韓國磁氣學會誌 Vol.24 No.2
The Fe₃O₄ nanoparticle was synthesized by the hot-injection method while varying the injection time of the precursor solution. The crystal structure was determined to be cubic inverse spinel with space group of Fd-3m based on X-ray diffraction (XRD) measurements and the morphology of the prepared Fe₃O₄ nanoparticle was studied with a high-resolution transmission electron microscope (HR-TEM). When the precursor solution was injected for 0.5 min, the size of the Fe₃O₄ nanoparticle was 7.63 nm, while the size of the obtained particle was 21.27 nm with the injection time of 60 min. The magnetic properties of the prepared Fe₃O₄ nanoparticle were investigated by both vibrating sample magnetometer (VSM) and <SUB>57</SUB>Co Mossbauer spectroscopy at various temperatures. From the hyperthermia measurement, we observed that the temperature of the Fe₃O₄ nanoparticle powder reached around 120 ℃ under 250 Oe at 50 kHz, when the injection time of the precursor solution was 60 min.
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