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제123회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Preparation of Nd2Fe14B/FeCo Magnetic Nanocomposite by Using Sol-Gel Method

등록일
2019년 1월 23일 11시 48분 09초
접수번호
2787
발표코드
PHYS.P-85 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 19일 (금요일) 11:00~12:30
발표형식
포스터
발표분야
Physical Chemistry
저자 및
공동저자
Ngo Minh Hieu, Young soo Kang1,*
Chemistry, Sogang University, Korea
1Department of Chemistry, Sogang University, Korea
Nd2Fe14B/FeCo magnetic nanocomposite was synthesized by using sol-gel method. In detail, as-synthesized cobalt ferrite nanoparticles with size 5 nm were produced by using organic surfactants to modify the surface property of inorganic seed particles. These particles surface was then modified from hydrophobic to hydrophilic by using cetyltrimethylammonium bromide (CTAB). The modified nanoparticles were dispersed into a solution contained NdCl3, FeCl3, H3BO3, citric acid and ethylene glycol to form a gel mixture at 90 oC. The gel was ignited at 200 oC, then forming oxide form at 800 oC, following by a reduction with CaH2 to form the composite. The crystal structure of the magnetic materials was characterized by XRD and TEM. The magnetic properties of the magnetic materials was characterized with vibrating sample magnetometer (VSM). The preliminary results showed a sharp decrease in coercivity and remanence as the cobalt ferrite ratio increased.

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