Dielectric Characteristics of Nd(Zn1/2Ti1/2)O3 Ceramics at Microwave Frequencies
Abstract:The microwave dielectric properties and the microstructures of Nd(Zn1/2Ti1/2)O3 (NZT) ceramics prepared by the conventional solid-state route have been studied. The prepared NZT exhibited a mixture of Zn and Ti showing 1:1 order in the B-site. The dielectric constant values (r) saturated at 29.1–31.6. The quality factor (Q×f) values of 56 700–170 000 (at 8.5 GHz) can be obtained when the sintering temperatures are in the range of 1300°–1420°C. The temperature coefficient of resonant frequency f was not sensitive to the sintering temperature. The r value of 31.6, the Q×f value of 170 000 (at 8.5 GHz), and the f value of −42 ppm/°C were obtained for NZT ceramics sintering at 1330°C for 4 h. For applications of high selective microwave ceramic resonators, filters, and antennas, NZT is proposed as a suitable material candidate.
Document Type: Research Article
Publication date: 2006-04-01