In　this　work,　a　series　of　scheelite　solid　solution　[(Li(0.5)Ln(0.5))(1-x)Ca-x]MoO4　(Ln=Sm　and　Nd;　x=0.20,　0.40,　0.60,　0.70,　0.80,　0.85,　0.90)　ceramics　were　prepared　by　conventional　solid-state　reaction　method.　The　sintering　temperature　was　lowered　to　925　degrees　C　by　(Li(0.5)Ln(0.5))(2+)　substituting　for　Ca2+　in　the　solid　solution　without　any　secondary　phase.　Compared　with　that　of　scheelite　CaMoO4　(-57ppm/degrees　C),　the　temperature　coefficient　of　resonant　frequency　(TCF　or　(f))　of　the　scheelite　solid　solution　was　modified　to　near　zero　(about　+4.3ppm/degrees　C)　at　x=0.8　with　a　dielectric　constant　11.0　and　the　quality　factor　(Qxf　value)　of　18695GHz.　The　Raman　spectra,　showed　the　degree　of　disordering　increased　with　x　value,　which　resulted　in　decrease　in　the　permittivities　and　increase　in　the　Qxf　values.　The　infrared　spectra　were　analyzed　using　the　classical　harmonic　oscillator　model　and　were　extrapolated　to　the　microwave　range.　The　chemical　compatibility　with　silver　electrode　indicated　that　the　reported　series　of　ceramics　were　good　candidates　for　the　low-temperature　cofired　ceramic　applications.