Electronically tunable thick film composites of tunable phases such as
barium strontium titanate and additional dielectric oxide phases are
disclosed. The composite thick films can contain multiple phases such as
barium strontium titanate and MgTiO.sub.3, Mg.sub.2 SiO.sub.4,
CaSiO.sub.3, MgO, MgZrO.sub.3, CaTiO.sub.3, MgAl.sub.2 O.sub.4, and
MgSrZrTiO.sub.6. The thick films may contain further additives such as
zirconnates, stannates, rare earths, niobates and tantalates, for example,
CaZrO.sub.3, BaZrO.sub.3, SrZrO.sub.3, BaSnO.sub.3, CaSnO.sub.3,
MgSnO.sub.3, Bi.sub.2 O.sub.3 /2SnO.sub.2, Nd.sub.2 O.sub.3, Pr.sub.7
O.sub.11, Yb.sub.2 O.sub.3, Ho.sub.2 O.sub.3, La.sub.2 O.sub.3, MgNb.sub.2
O.sub.6, SrNb.sub.2 O.sub.6, BaNb.sub.2 O.sub.6, MgTa.sub.2 O.sub.6,
BaTa.sub.2 O.sub.6, and Ta.sub.2 O.sub.3 to improve the electronic and
microwave properties of the thick film composites. The particle size of
these films may be controlled in order to optimize the electronic and
microwave properties. The electronically tunable thick film composites may
be made by techniques such as screen-printing or spray deposition.
Os compostos eletronicamente ajustáveis da película grossa de fases ajustáveis tais como o titanate do strontium do bário e de fases dieléctricas adicionais do óxido são divulgados. As películas grossas compostas podem conter fases múltiplas tais como o titanate do strontium do bário e o MgTiO.sub.3, o Mg.sub.2 SiO.sub.4, o CaSiO.sub.3, o MgO, o MgZrO.sub.3, o CaTiO.sub.3, o MgAl.sub.2 O.sub.4, e o MgSrZrTiO.sub.6. As películas grossas podem conter uns aditivos mais adicionais tais como zirconnates, stannates, terras raras, niobates e tantalates, para o exemplo, CaZrO.sub.3, BaZrO.sub.3, SrZrO.sub.3, BaSnO.sub.3, CaSnO.sub.3, MgSnO.sub.3, Bi.sub.2 O.sub.3 /2SnO.sub.2, Nd.sub.2 O.sub.3, Pr.sub.7 O.sub.11, Yb.sub.2 O.sub.3, Ho.sub.2 O.sub.3, La.sub.2 O.sub.3, MgNb.sub.2 O.sub.6, SrNb.sub.2 O.sub.6, BaNb.sub.2 O.sub.6, MgTa.sub.2 O.sub.6, BaTa.sub.2 O.sub.6, e Ta.sub.2 O.sub.3 para melhorar as propriedades eletrônicas e da microonda dos compostos da película grossa. O tamanho de partícula destas películas pode ser controlado a fim optimize as propriedades eletrônicas e da microonda. Os compostos eletronicamente ajustáveis da película grossa podem ser feitos por técnicas tais como tela-imprimir ou deposition do pulverizador.
