Details

Autor(en) / Beteiligte

• Huang, Cheng-Liang
• Lin, Ting-Hao
• Ling, I.-Chun
• Hsu, Tsung-Hsien

Titel

Enhancing microwave dielectric properties of Na5Tb(MoO4)4 ceramics by substituting Ag into the Na site

Ist Teil von

• Journal of materials science. Materials in electronics, 2024-03, Vol.35 (9), p.662, Article 662

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2024

Quelle

SpringerLink

Beschreibungen/Notizen

• The structures and microwave dielectric properties of Na 5− x Ag x Tb(MoO 4 ) 4 ceramics were explored. Single Na 5 Tb(MoO 4 ) 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 dete c ted 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 Na 3.93 Ag 0.07 Tb(MoO 4 ) 4 compound sintered at 530 °C exhibited excellent microwave dielectric properties ( ε r  = 8.5, Q  ×  f  = 54,000 GHz and τ f  =  − 24 ppm/°C), which are very promising for microwave and millimeter wave applications.