| 학회 |
한국공업화학회 |
| 학술대회 |
2014년 가을 (11/12 ~ 11/14, 엑스코(대구)) |
| 권호 |
18권 2호 |
| 발표분야 |
나노-포스터 |
| 제목 |
Effect of Pressure on the Synthesis of magnetite nanoparticles using a high pressure homogenizer |
| 초록 |
Magnetic nanoparticles have interesting magnetic and electrical properties. They are used in permanent magnets, magnetic memory devices, and new magnetic refrigeration system. High pressure homogenization in a solution during the chemical reaction may accelerate the rate of the reaction and the crystallization may be possible at low temperature. Magnetite nanoparticles were synthesized from Fe(OH)2 using a high pressure homogenizer without any dispersing agents and oxidant. The X-ray diffraction patterns showed that all the samples had the inverse spinel structure of magnetite nanoparticles. The average size of the magnetite particles could be controlled by the pressure of high pressure homogenizer. The average particle size ranged from 21 to 26 nm. Magnetic hysteresis measurements were performed using a vibrating sample magnetometer (VSM) to investigate the magnetic properties of the magnetite nanoparticles at room temperature. The VSM measurements revealed superparamagnetism of the nanoparticles for 1 pass at 1500 bar. |
| 저자 |
조준희, 김태영, 윤혜연, 지성화, 김현효
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| 소속 |
(주)일신오토클레이브 기술(연) |
| 키워드 |
Magnetite; Nanoparticle; High pressure homogenizer; Superparamagnetism
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| E-Mail |
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