Effects of packing fraction, lattice vibration, and bond valence on the microwave dielectric properties of low-ε garnet-type Ca3Sc2Ge3O12 ceramics

Influence of sintering characteristics and structural properties on the microwave dielectric properties of non-stoichiometric Ca3Mn2+xGe3O12+δ (x = 0–0.2) ceramics

“…In particular, the Ca 3 B 2 Ge 3 O 12 ceramic system, with the B site occupied by a transition element, typically exhibits a high quality factor. Notably, Ca 3 Sc 2 Ge 3 O 12 , 15 Sr 3 Y 2 Ge 3 O 12 , 16 and Ca 3 Fe 2 Ge 3 O 12 3 ceramics, which we previously report, exhibit excellent microwave dielectric properties with high Q × f and low relative permittivity ( ε r ) values (∼10), making them suitable for higher signal transmission rates. 3 However, to the best of our knowledge, no work to date has reported the microwave dielectric properties of Ca 3 Mn 2 Ge 3 O 12 ceramics with B sites occupied by Mn.…”