Bd. Stojanovic et al., Synthesis and characterization of 9.5/65/35 PLZT prepared from the polymeric precursors, MATER CH PH, 67(1-3), 2001, pp. 282-287
The 9.5/65/35 PLZT was prepared from the polymeric precursors (the Pechini
and partial oxalate process) and by sintering in two stages in an oxygen at
mosphere. After thermal treatment at 400 degreesC, the powders were calcina
ted and sintered at 1200 degreesC with slow heating and cooling rates. The
second stage of sintering consisted of hot pressing at the same temperature
in oxygen atmosphere. After calcination of PLZT powders obtained by both m
ethods, as well as after sintering of PLZT obtained by Pechini process, the
paraelectric cubic phase was formed. After sintering of PLZT obtained by p
artial oxalate procedure, small tetragonality of crystal structure was obse
rved. After hot pressing PLZT was pseudocubic. SEM microstructural analyses
were carried out of the sintering and hot pressed samples and indicated th
e small grain size less than 2 mum. (C) 2001 Elsevier Science B.V. All righ
ts reserved.