상세정보
학술지
Effects of SiO2 Addition on Microstructure and Magnetic Properties of Yttrium Iron Garnet
- 발행일
- 200505
- 출처
- Japanese Journal of Applied Physics, v.44 no.5A, pp.3015-3016
- ISSN
- 0021-4922
- 출판사
- Japan Society of Applied Physics (JSAP), Institute of Physics (IOP)
- 협약과제
- 04MB1200, 60GHz Pico Cell 통신용 SoP(구:60GHz 광대역 무선 LAN 기술 개발), 조경익
- 초록
- Pore free Yttrium Iron Garnet (YIG) ceramics with high density and low magnetic loss were manufactured by conventional ceramic processing. By small additions of SiO2, pores captured inside grains were effectively eliminated, and the number of pores in grain boundaries was markedly reduced. The density of specimens was 99.6% of the theoretical density. The FMR linewidth of a specimen was 47 Oe, which is comparable to that of other YIG specimens produced by more expensive and elaborate process such as hot pressing. However, adding more than 1 mol% SiO2 deteriorated the sintering characteristics of the YIG specimen. The added SiO2 may segregate at grain boundaries and inhibit the grain growth. As a result, the average grain size and sintered density were reduced in the case of SiO2 addition more than 1 mol%. © 2005 The Japan Society of Applied Physics.
- KSP 제안 키워드
- Applied physics, Average grain size, Ceramic processing, FMR linewidth, High-density, Hot pressing(HP), Low magnetic loss, Microstructure and magnetic properties, Sintered density, Sintering characteristics, Yttrium iron garnet