Refractive indexes of the (Pb,La)(Zr,Ti)O3 system are determined by minimum deviation for eight ceramic compounds over the 400–750-nm wavelength range and for two compounds over the 25–150°C temperature range. The index of one compound (10/65/35) is reported to 2600 nm. Ellipsometric measurements show the presence of a low-index surface layer on these ceramics. Such layers, whose origin is not determined, have influenced previous index measurements based on reflection techniques.
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Compounds are chemically batched as [Pb1−xLax][ZryTi1−y]1−x/4O3 and indicated in the tables as x(%)/y(%)/100-y(%) (See Ref. 1).
These values for 8/100/0 [La-containing PbZrO3] are extrapolated for the various wavelengths as shown in Fig. 1.
Indexes for ceramic PbTiO3 are calculated as [2no + ne]/3, and values for no and ne are obtained using parameters for the Sellmeier equation reported in Ref. 11.
Compounds are chemically batched as [Pb1−xLax][ZryTi1−y]1−x/4O3 and indicated in the tables as x(%)/y(%)/100-y(%) (See Ref. 1).
These values for 8/100/0 [La-containing PbZrO3] are extrapolated for the various wavelengths as shown in Fig. 1.
Indexes for ceramic PbTiO3 are calculated as [2no + ne]/3, and values for no and ne are obtained using parameters for the Sellmeier equation reported in Ref. 11.