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Lead titanate

Lead titanium oxide Lead(II) titanium oxide | NFPA-H = 2 | NFPA-F = 0 | NFPA-R = 0 | NFPA-S = Lead acetate Iron(II) titanate

Lead(II) titanate is an inorganic compound with the chemical formula PbTiO3. It is the lead salt of titanic acid. Lead(II) titanate is a yellow powder that is insoluble in water.

At high temperatures, lead titanate adopts a cubic perovskite structure. At 760 K, the material undergoes a second order phase transition to a tetragonal perovskite structure which exhibits ferroelectricity. Lead titanate is one of the end members of the lead zirconate titanate (, 0 ≤ x ≤ 1, PZT) system, which is technologically one of the most important ferroelectric and piezoelectric ceramics; .

Lead titanate occurs in nature as mineral macedonite.

Toxicity

Lead titanate is toxic, like other lead compounds. It irritates skin, mucous membranes and eyes. It may also cause harm to unborn babies and might have effects on fertility.

Solubility in water

The solubility of hydrothermally-synthesized perovskite-phase PbTiO3 in water was experimentally determined at 25 and 80 °C to depend on pH and vary from 4.9x10−4 mol/kg at pH≈3, to 1.9x10−4 mol/kg at pH≈7.7, to "undetectable" (−7 mol/kg) in the range 10

References

References

  1. {{Sigma-Aldrich
  2. (1995-06-01). "Composition dependence of the ferroelectric-paraelectric transition in the mixed system PbZr1−xTixO3". American Physical Society (APS).
  3. Radusinović, Dušan and Markov, Cvetko "Macedonite - lead titanate: a new mineral", ''American Mineralogist'' '''56''', 387-394 (1971), http://www.minsocam.org/ammin/AM56/AM56_387.pdf
  4. Burke, E.A.J. and Kieft, C. "Second occurrence of makedonite, PbTiO3, Långban, Sweden", ''Lithos'' '''4''', 101-104 (1971)
  5. "Archived copy".
  6. Jooho Moon, Melanie L. Carasso, Henrik G. Krarup, Jeffrey A. Kerchner, "Particle-shape control and formation mechanisms of hydrothermally derived lead titanate", Journal of Materials Research, Vol. 14, No.3, March 1999.[https://www.researchgate.net/publication/237652068_Particle-Shape_Control_and_Formation_Mechanisms_of_Hydrothermally_Derived_Lead_Titanate]
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lead(ii)-compounds titanates ferroelectric-materials perovskites
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