| 학회 | 한국공업화학회 |
| 학술대회 | 2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO)) |
| 권호 | 25권 2호 |
| 발표분야 | 포스터-나노 |
| 제목 | Fabrication of Epsilon Hard Ferrites for Electromagnetic Wave Absorption Application |
| 초록 | Electromagnetic waves are beginning to be using in electronic devices for high-speed wireless communication. Ferrites with high coercive field have been used as Electromagnetic wave shielding materials due to their ferromagnetic resonance. The epsilon iron oxide(ε-Fe2O3) has remarkable advantages in spectroscopic absorption with highest resonance frequency due to its gigantic coercive field(＞ 20kOe). However, it is difficult to produce high purity epsilon phase since that only can be obtained under the specific conditions such as nanometer sized particle and narrow annealing temperature. In this study, we have developed a facile and scalable method to fabricate high purity ε-Fe2O3 via an aerosol approach. In addition, the magnetic properties were controlled by replacing some Fe3+ ions with various non-magnetic elements such as Ga and Y. This study was supported by the Fundamental Research Program of the Korea Institute of Material Science (PNK7630). |
| 저자 | 정다영, 조기련, 백연경 |
| 소속 | 한국재료(연) |
| 키워드 | Epsilon Ferrite; Electromagnetic Wave; Millimeter Wave; Absorber; Aerosol |
