Microwave dielectric properties of multi-ions Ba(Zn,Ta)O3-based perovskite ceramics
Source abstract
Abstract
Abstract In this study, Ba(Zn 1/3 Ta 2/3 )O 3 -based complex perovskite compounds, including Ba(Zn 1/3 Ta 2/3 )O 3 , Ba(Zn 1/3 Ta 1/3 Nb 1/3 )O 3 , Ba(Zn 1/6 Co 1/6 Ta 2/9 Nb 2/9 Sb 2/9 )O 3 , and Ba 1/2 Sr 1/2 (Zn 1/6 Co 1/6 Ta 2/9 Nb 2/9 Sb 2/9 )O 3 , were prepared and characterized. There was no second phase formation shown in the XRD patterns. Though it has been suggested that substitutions of multiple ions over A-site or B-site of the Ba(Zn 1/3 Ta 2/3 )O 3 ceramics may not be beneficial to their microwave dielectric properties, the Ba(Zn 1/6 Co 1/6 Ta 2/9 Nb 2/9 Sb 2/9 )O 3 and Ba 1/2 Sr 1/2 (Zn 1/6 Co 1/6 Ta 2/9 Nb 2/9 Sb 2/9 )O 3 ceramics in this study were found to perform in a fairly acceptable manner. The Ba(Zn 1/6 Co 1/6 Ta 2/9 Nb 2/9 Sb 2/9 )O 3 ceramic (sintered at 1575 °C for 6 h) and the Ba 1/2 Sr 1/2 (Zn 1/6 Co 1/6 Ta 2/9 Nb 2/9 Sb 2/9 )O 3 ceramic (sintered at 1550 °C for 6 h) reported the following characteristics after annealing at 1400 °C for 10 h: 24.9 and 27.0 for dielectric constants ( ɛ r ), 83,000 and 32,100 GHz for quality factors ( Q × f ) values and −12.8 and −22.6 ppm/°C for temperature coefficients of resonance frequency ( τ f ).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microwave Dielectric Ceramics Synthesis · Ferroelectric and Piezoelectric Materials · Layered Double Hydroxides Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
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