| 학회 | 한국공업화학회 |
| 학술대회 | 2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 | 25권 1호 |
| 발표분야 | 포스터-나노 |
| 제목 | Comparison of Ferromagnetic resonance frequency by coercivity of ferrite |
| 초록 | Millimeter waves (30-300 GHz) are beginning to be used in electronic devices for high-speed wireless communication. However, currently materials that effectively restrain elctromagnetic (EM) interference in the region of millimeter waves almost do not exist. So, finding a suitable material has received much attention. Magnetic materials absorb EM waves due to ferromagnetic resonance (fr). The fr is proportional to the magnetocrystalline anisotropy field (Ha), which is expressed by fr=(ν/2π)Ha. When the sample consists of randomly oriented magnetic particles with a uniaxial magnetic anisotropy, the Ha is proportional to the Hc. According to the equation, it is reasonable to assume that it will show a similar fr range by similar Hc. Thus, we have compared the fr and magnetic properties of SrFe12O19 and ε-Fe2O3 showing similar Hc, which confirmed differenct frequencies. This study was supported by the Fundamental Research Program of the Korea Institute of Material Science (PNK7630) |
| 저자 | 조기련1, 표민지1, 백연경1, 손영국2 |
| 소속 | 1재료(연), 2부산대 |
| 키워드 | SrFe12O19; ε-Fe2O3; Millimeter wave; EM absorber; ferromagnetic resonance frequency |
