TY - JOUR
T1 - Enhancing microwave dielectric properties of Na5Tb(MoO4)4 ceramics by substituting Ag into the Na site
AU - Huang, Cheng Liang
AU - Lin, Ting Hao
AU - Ling, I. Chun
AU - Hsu, Tsung Hsien
N1 - Publisher Copyright:
© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.
PY - 2024/3
Y1 - 2024/3
N2 - The structures and microwave dielectric properties of Na5−xAgxTb(MoO4)4 ceramics were explored. Single Na5Tb(MoO4)4 phased solid solutions were obtained for specimens with x values ranging from 0 to 0.07, with a small amount of Mo-rich second phase detected at x = 0.09. Although the solid solution range is very limited, the advantage of silver substitution is that it lowers the sintering temperature, increases the densification, and enhances the dielectric properties of the ceramics. The P–V–L bond theory was employed to analyze the correlations between the chemical bond parameters and microwave dielectric properties, which were predominantly influenced by the ionicity and lattice energy of the Tb–O bond. The Na3.93Ag0.07Tb(MoO4)4 compound sintered at 530 °C exhibited excellent microwave dielectric properties (εr = 8.5, Q × f = 54,000 GHz and τf = − 24 ppm/°C), which are very promising for microwave and millimeter wave applications.
AB - The structures and microwave dielectric properties of Na5−xAgxTb(MoO4)4 ceramics were explored. Single Na5Tb(MoO4)4 phased solid solutions were obtained for specimens with x values ranging from 0 to 0.07, with a small amount of Mo-rich second phase detected at x = 0.09. Although the solid solution range is very limited, the advantage of silver substitution is that it lowers the sintering temperature, increases the densification, and enhances the dielectric properties of the ceramics. The P–V–L bond theory was employed to analyze the correlations between the chemical bond parameters and microwave dielectric properties, which were predominantly influenced by the ionicity and lattice energy of the Tb–O bond. The Na3.93Ag0.07Tb(MoO4)4 compound sintered at 530 °C exhibited excellent microwave dielectric properties (εr = 8.5, Q × f = 54,000 GHz and τf = − 24 ppm/°C), which are very promising for microwave and millimeter wave applications.
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U2 - 10.1007/s10854-024-12431-9
DO - 10.1007/s10854-024-12431-9
M3 - Article
AN - SCOPUS:85188860001
SN - 0957-4522
VL - 35
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
IS - 9
M1 - 662
ER -