Ternary oxide dielectric properties

Because the high dielectric responses in the tetragonal phase of BaTiOs are caused by a deformation of the TiOe coordination polyhedron and consequently the creation of a permanent electric dipole, it is instmctive to consider from this viewpoint the dielectric properties in other ternary oxides. After the size effect in BaTiOa was clarified, works on the synthesis of materials with high e were focused on obtaining compounds with the maximum distortion in the crystal... 

Another type of structures for metal-dielectric mirrors are metallodielectric multilayers. In this case alternating quarterwave or subwavelength stacks of metal and dielectric are deposited. Typical for such multilayers is alow reflection in visible, but large in infrared wavelength range. Thus they basically behave as low-pass optical filters. Such stmctures were denoted in literature as heat mirrors. First heat mirrors were fabricated as early as in 1950s [252]. The simplest heat mirrors consist of three layers only, dielectric-metal-dielectric or, alternatively, dielectric-transparent conductive oxide-dielectric [253]. Full multilayer metal-dielectric reflectors with binary but also ternary layers were also considered [254]. Because of their high reflectance in infrared, but also because of their plasmonic properties [255] metal-dielectric multilayer mirrors are of interest for cavity enhancement of infrared detectors. 

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