논문 상세보기

수열합성을 이용하여 제작한 Fe3O4 결정입자의 자기적 특성 KCI 등재

Magnetic Properties of Micron Sized Fe3O4 Crystals Synthesized by Hydrothermal Methods

  • 언어KOR
  • URLhttps://db.koreascholar.com/Article/Detail/386534
구독 기관 인증 시 무료 이용이 가능합니다. 4,000원
한국분말야금학회지 (Journal of Korean Powder Metallurgy Institute)
한국분말재료학회(구 한국분말야금학회) (Korean Powder Metallurgy Institute)
초록

Iron oxides currently attract considerable attention due to their potential applications in the fields of lithiumion batteries, bio-medical sensors, and hyperthermia therapy materials. Magnetite (Fe3O4) is a particularly interesting research target due to its low cost, good biocompatibility, outstanding stability in physiological conditions. Hydrothermal synthesis is one of several liquid-phase synthesis methods with water or an aqueous solution under high pressure and high temperature. This paper reports the growth of magnetic Fe3O4 particles from iron powder (spherical, <10 μm) through an alkaline hydrothermal process under the following conditions: (1) Different KOH molar concentrations and (2) different synthesis time for each KOH molar concentrations. The optimal condition for the synthesis of Fe3O4 using Fe powders is hydrothermal oxidation with 6.25 M KOH for 48 h, resulting in 89.2 emu/g of saturation magnetization at room temperature. The structure and morphologies of the synthesized particles are characterized by X-ray diffraction (XRD, 2θ = 20°–80°) with Cu-kα radiation and field emission scanning electron microscopy (FE-SEM), respectively. The magnetic properties of magnetite samples are investigated using a vibrating sample magnetometer (VSM). The role of KOH in the formation of magnetite octahedron is observed.

목차
Abstract
1. 서 론
2. 실 험
3. 결과 및 토의
4. 결 론
References
저자
  • 이기범(한남대학교 광전자물리학과) | Ki-Bum Lee (Department of Applied Physics, Hannam University)
  • 남충희(한남대학교 광전자물리학과/한남대학교 전기전자공학과) | Chunghee Nam (Department of Applied Physics, Hannam University/Department of Electrical and Electronic Engineering, Hannam University) Corresponding Author