Title :
Microwave dielectric properties of (Bi0.95Sb0.05)NbO4 ceramics with sintering temperature
Author :
Lee, Young-Hie ; Choi, Eui-Sun ; Ryu, Ki-Won ; Bae, Seon-Gi
Author_Institution :
Dept. of Electr. Mater. Eng., Kwangwoon Univ., Seoul, South Korea
Abstract :
The Bi0.95Sb0.05NbO4 ceramics with dopant(0.2wt%∼0.3wt%CuO) were prepared by the conventional mixed oxide method. The structural properties were investigated with sintering temperature by XRD. Also the microwave dielectric properties of the Bi0.95Sb0.05NbO4 ceramics were studied. According to the X-ray diffraction patterns of the Bi0.95Sb0.05NbO4 ceramics with CuO, the structure of the ceramics had the orthorhombic. The dielectric constant, quality factor and temperature coefficient of resonant frequency of the Bi0.95Sb0.05NbO4+CuO(0.3wt%) ceramics sintered at 975°C, were 39.2, 9,730 and -3.2 ppm/°C, respectively. The dielectric constant, quality factor and temperature coefficient of resonant frequency of the Bi0.95Sb0.05NbO4+CuO(0.5wt%) ceramics sintered at 950°C, were 40.5, 9,580 and -9.8 ppm/°C, respectively.
Keywords :
Q-factor; X-ray diffraction; antimony compounds; bismuth compounds; ceramics; copper compounds; crystal structure; dielectric materials; particle size; permittivity; sintering; (Bi0.95Sb0.05)NbO4 ceramics; (Bi0.95Sb0.05)NbO4-CuO; 950 degC; 975 degC; X-ray diffraction; XRD; conventional mixed oxide method; dielectric constant; microwave dielectric properties; orthorhombic structure; quality factor; resonant frequency; sintering; structural properties; temperature coefficient; Bismuth; Ceramics; Conducting materials; Dielectric constant; Dielectric losses; Dielectric materials; Niobium compounds; Nonhomogeneous media; Resonant frequency; Temperature;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2003. Proceedings of the 7th International Conference on
Print_ISBN :
0-7803-7725-7
DOI :
10.1109/ICPADM.2003.1218531
