チューナブルデバイス用誘電体セラミックス

Japanese Patent JP5605120

B2

PROBLEM TO BE SOLVED: To provide dielectric ceramic for tunable devices which has large variation of a relative dielectric constant for dc bias electric fields, small temperature dependence of the relative dielectric constant, and small dielectric loss in a wide frequency range, and enables low-temperature sintering.SOLUTION: The dielectric ceramic for tunable devices has a composition represented by the general formula: (1-x-y)NaNbO-xSrTiO-yCaTiO, wherein 0≤x<1, 0≤y<1 and 0