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Dielectric Characteristics of Nd(Zn1/2Ti1/2)O3 Ceramics at Microwave Frequencies

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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.
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Document Type: Research Article

Affiliations: 1: Department of Electrical Engineering, National Cheng Kung University, Tainan 70101, Taiwan 2: Department of Electrical Engineering, National United University, Miao-Li 36003, Taiwan

Publication date: 2006-04-01

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