- 마이크로파 유전체 Bi0.97Tm0.03NbO4의 V2O5 첨가에 따른 유전특성
- ㆍ 저자명
- 황창규,장건익,윤대호
- ㆍ 간행물명
- 전기전자재료학회논문지
- ㆍ 권/호정보
- 2003년|16권 11호|pp.975-978 (4 pages)
- ㆍ 발행정보
- 한국전기전자재료학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
The microwave dielectric properties and the microstructures on B $i_{0.97}$T $m_{0.03}$Nb $O_4$ doped with $V_2$ $O_{5}$ were systematically investigated. B $i_{0.97}$T $m_{0.03}$Nb $O_4$ ceramics sintered at 920-96$0^{circ}C$ were mainly consisted of orthorhombic and triclinic phases after addition of $V_2$ $O_{5}$. The apparent density increased slightly with increasing the $V_2$ $O_{5}$ addition. The dielectric constants($varepsilon$$_{r}$) also increased with $V_2$ $O_{5}$ addition(30-45). The Q${ imes}$ $f_{0}$ values measured on B $i_{0.97}$T $m_{0.03}$Nb $O_4$ ceramics doped with $V_2$ $O_{5}$ were between 2,000 and 12,000[GHz] when the sintering temperatures were in the range of 920-960[$^{circ}C$]. It was confirmed that the temperature coefficient of the resonant frequency($ au$$_{f}$) can be adjusted from a positive value of +10ppm/$^{circ}C$ to a negative value of -15ppm/$^{circ}C$ by increasing the amount of $V_2$ $O_{5}$ Based on our experimental results, the B $i_{0.97}$T $m_{0.03}$Nb $O_4$(added $V_2$ $O_{5}$) ceramics can be applied to multilayer microwave devices at low sintering temperatures.ng temperatures.emperatures.ratures.