ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Physical properties of PbTiO3 in the presence of Si are investigated in detail. Polycrystalline bulk samples with nominal composition of (Pb1−xSix) (Ti1−xSix)O3, where x varies from 0.01 to 0.25, are synthesized using the coprecipitation route. The presence of Si in the matrix leads to a reduction in coherently diffracting domain size (dXRD). The observed reduction in the ferroelectric distortion in the lattice c/a, ferroelectric transition temperature Tc and shift in Raman lines of PbTiO3 with increase in Si content are attributed to the Si induced finite size effect. However, at higher calcination temperatures, the material exhibits properties similar to pure, undoped, bulk PbTiO3. There is no evidence of change in crystal structure and ferroelectric nature of PbTiO3 due to the presence of Si. Our data suggests that Si, which is diffused out of PbTiO3 perovskite lattice, is likely to reside in the grain boundary region in an as yet unidentified chemical form. © 2000 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.371884
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