Infrared spectroscopic study of microwave-sintered Pb(Zr,Ti)O3-based ceramics.
Infrared spectroscopy is often used to monitor the formation of the perovskite phase during the preparation of lead zirconate titanate (PZT) thin films and fibres and also to detect phase transitions. Infrared spectroscopy has rarely been used to investigate bulk samples or thick films of PZT. In this study, the first results of infrared investigations of microwave-sintered PZT and PZT reinforced with powdered copper are presented and compared with results from thermally heated samples. The infrared spectra show the typical Zr/TiO(6) metal-oxygen octahedral vibrational modes in the range 750 to 450 cm(-1). This band is broadened for the pure PZT samples at higher sintering temperatures. A shift of the peak to lower wave numbers with increasing temperatures can be proven for pure PZT samples, but not for the Cu-reinforced PZT samples.
Siemens VDO Automotive AG, Diesel Systems, 09212, Limbach-Oberfrohna, Germany. sabine.schoeps@gmx.de
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Dorner-Reisel