Effect of La substitution on phase transitions in lead zirconate stannate titanate (55/35/10) ceramics

Journal Article · Tue Nov 30 23:00:00 EST 2004 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1805732· OSTI ID:20658107

Chan, W -H; Xu, Z; Hung, T F; Chen, Haydn ^[1]

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1. Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong (China)

Investigations of the structure-property relationships in Pb{sub 1-3x/2}La{sub x}(Zr{sub 0.55}Sn{sub 0.35}Ti{sub 0.10})O{sub 3}. (PLZST 100x/55/35/10) have been performed for x between 0 and 0.08 by means of x-ray diffraction, electron microscopy, polarization, and dielectric studies. Factors affecting the phase stability were determined. The base composition PLZST 0/55/35/10 was ferroelectric (FE) at room temperature and transformed into an incommensurate antiferroelectric (AFE{sub in}) state on heating. Evidence was presented that low La addition could destabilize the FE state and PLZST 2/55/35/10 became AFE{sub in} at room temperature, which transformed to a multicell cubic state and then to a paraelectric (PE) phase upon heating. Further increase of La content enhanced the stability of the AFE{sub in} state at room temperature. Moreover, addition of La could also broaden the AFE{sub in}-PE phase transition temperature region and decrease its maximal dielectric constant {epsilon}{sub max}{sup '}.

• OSTI ID: 20658107
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 96; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIFERROELECTRIC MATERIALS
CERAMICS
GRAIN SIZE
LANTHANUM COMPOUNDS
LEAD COMPOUNDS
PERMITTIVITY
PHASE DIAGRAMS
PHASE STABILITY
PHASE TRANSFORMATIONS
POLARIZATION
TEMPERATURE RANGE 0273-0400 K
TIN COMPOUNDS
TITANATES
TRANSITION TEMPERATURE
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ZIRCONATES