New dielectric material system of Nd(Mg1/2Ti1/2)O3–CaTiO3 at microwave frequency

Structural evolution and microwave dielectric properties of CaTiO3–La(Mg2/3Nb1/3)O3 ceramics

“…Thus, CaTiO 3 -Ln(B′ 1/2 B″ 1/2 )O 3 has been intensively investigated. 15 Huang et al 16 reported (1 − x)CaTiO 3 -xNd(Mg 1/2 Ti 1/2 )O 3 ceramics with dielectric properties of ε r = 42, Qf = 35 000 GHz, and τ f = −10 ppm/ • C. Cairns et al 14 revealed the structure-property correlations of (1−x)CaTiO 3 -xLn(Co 1/2 Ti 1/2 )O 3 (Ln = La and Nd) ceramics and the solid solutions present ε r = 43∼45, Qf = 4000-5000 GHz, and τ f = ∼0 ppm/ • C. Meanwhile, 0.5CaTiO 3 -0.5Nd(Mg 1/2 Ti 1/2 )O 3 ceramics with ε r = 49.4, Qf = 21000 GHz, and τ f = +0.6 ppm/ • C were prepared by Iddles. 13 The replacement of Ca 2+ by trivalent Ln 3+ and Ti 4+ by (B′ 1/2 B″ 1/2 ) 3+ can effectively lower the dielectric constant and improve the quality factor of CaTiO 3 .…”

“…Thus, CaTiO 3 –Ln(B′ 1/2 B″ 1/2 )O 3 has been intensively investigated 15 . Huang et al 16 . reported (1 − x )CaTiO 3 – x Nd(Mg 1/2 Ti 1/2 )O 3 ceramics with dielectric properties of ε r = 42, Qf = 35 000 GHz, and τ f = −10 ppm/°C.…”