Lead titanate
Crystal structure | ||||||||||||||||
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__ Pb 2+ __ Ti 4+ __ O 2− | ||||||||||||||||
General | ||||||||||||||||
Surname | Lead titanate | |||||||||||||||
Ratio formula | PbTiO 3 | |||||||||||||||
Brief description |
Yellow powder |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 303.09 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
7.52 g cm −3 |
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safety instructions | ||||||||||||||||
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Authorization procedure under REACH |
of particular concern : toxic for reproduction ( CMR ) |
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Lead (II) titanate is a toxic chemical compound consisting of the elements lead , titanium and oxygen with the empirical formula PbTiO 3 . As the lead salt of titanic acid (H x Ti y O z ), it is one of the titanates . Lead (II) titanate is a yellow, water-insoluble powder.
At higher temperatures, lead titanate adopts a cubic perovskite structure . When the Curie temperature of 447 ° C is reached, the material becomes ferroelectric and takes on a tetragonal structure. Lead titanate is one of the end links in the phase diagram of lead zirconate titanate , a ferroelectric ceramic, where the zirconium content is zero and the titanium content is a maximum.
Individual evidence
- ↑ a b c d e f data sheet Lead titanium oxide at AlfaAesar, accessed on October 31, 2012 ( PDF )(JavaScript required) .
- ↑ Entry in the SVHC list of the European Chemicals Agency , accessed on July 17, 2014.
- ↑ Beatriz Noheda et al. a .: Composition dependence of the ferroelectric-paraelectric transition in the mixed system PbZr 1-x Ti x O 3 . In: Physical Review B . tape 51 , no. 22 June 1995, p. 16388-16391 , doi : 10.1103 / PhysRevB.51.16388 .