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 (ɛr) 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 τf was not sensitive to the sintering temperature. The ɛr value of 31.6, the Q×f value of 170 000 (at 8.5 GHz), and the τf 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.
High-dielectric-constant and low-loss ceramics in the (1Àx)Nd(Zn 1/2 Ti 1/2 )O 3 -xSrTiO 3 system have been prepared by the conventional mixed-oxide route and their microwave dielectric properties have been investigated. A two-phase system was confirmed by the X-ray diffraction patterns, the energy-dispersive X-ray spectrometer analysis, and the measured lattice parameters. Addition of SrTiO 3 , having a much smaller grain size in comparison with that of Nd(Zn 1/2 Ti 1/2 )O 3 , could effectively hold back abnormal grain growth in the Nd(Zn 1/2 Ti 1/2 ) O 3 matrix. Evaporation of Zn at high temperatures caused an increase in the dielectric loss of the system. The temperature coefficient of resonant frequency increases with increasing SrTiO 3 content and tunes through zero at x 5 0.52. Specimens with x 5 0.52 possessed an excellent combination of microwave dielectric properties: e r B54.2, Q Â f B84 000 GHz, and s f B0 ppm/1C. It is proposed as a suitable candidate material for today's 3G passive components and small-sized GPS patch antennas.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.