Ferroelectric Properties of Lead Titanate | Zendy

BHIDE V. G. | Zendy; HEGDE M. S. | Zendy; DESHMUKH K. G. | Zendy

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Ferroelectric Properties of Lead Titanate

Author(s) -

BHIDE V. G.,

HEGDE M. S.,

DESHMUKH K. G.

Publication year - 1968

Publication title -

journal of the american ceramic society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.9

H-Index - 196

eISSN - 1551-2916

pISSN - 0002-7820

DOI - 10.1111/j.1151-2916.1968.tb13323.x

Subject(s) - ferroelectricity , materials science , eutectic system , lead titanate , mineralogy , crystallization , polarization (electrochemistry) , thermal expansion , analytical chemistry (journal) , thermodynamics , crystallography , dielectric , chemistry , microstructure , metallurgy , optoelectronics , physics , chromatography

The eutectic and solidus temperatures of the PbTiO 3 ‐KF binary system were investigated by DTA for four compositions. Optical studies of crystal habit as a function of crystallization conditions were used to determine favorable conditions for growing PbTiO 3 crystals from a KF flux. Results of X‐ray studies of these crystals agree closely with those of earlier studies. Interferometric measurements of thermal expansion confirmed the ferroelectric transition at 490° C. Specific heat studies indicated a transition energy of about 1550 cal/mole with an entropy change of 2.055 cal/mole °C. Spontaneous polarization was calculated as 66 μcoulombs/cm 2 .

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