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|Section2= |Section3= |Section8= }} Lead(II) titanate is an inorganic compound with the chemical formula PbTiO3. It is the lead salt of titanic acid and has a high ratio of k33 to kp with a high kt. 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,〔Noheda, Cereceda, Iglesias, Lifante, Gonzalo, Chen and Wang, Phys. Rev. B 51, 16388 (1995)〕 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 (Pb Lead titanate occurs in nature as mineral macedonite.〔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〕〔Burke, E.A.J. and Kieft, C. "Second occurrence of makedonite, PbTiO3, Långban, Sweden", ''Lithos'' 4, 101-104 (1971)〕 ==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.〔http://www.alfa.com/content/msds/USA/35671.pdf〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lead titanate」の詳細全文を読む スポンサード リンク
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