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Engineering LibreTexts

18.6: Examples

  • Page ID
    8288
  • Like other dielectric materials, the predominant pyroelectric structure is the perovskite.

    Two examples are:
    0.75Pb(Mg1/3-Nb2/3)O3-0.25PbTiO3, which has a pyroelectric coefficient of −1300 μC m−2 K−1 as a single crystal.

    It is more commonly referred to as PMN-PT.

    https://www.doitpoms.ac.uk/tlplib/py...ite-PbNbO3.mp4

    Rotating crystal structure of PbMg/NbO3

    and

    Ba0.65Sr0.35TiO3, which has a pyroelectric coefficient of −7570 μC m−2 K−1.

    It is also known as BST.

    https://www.doitpoms.ac.uk/tlplib/py...e-BaSrTiO3.mp4

    Rotating crystal structure of Ba/SrTiO3

    However, there are other types of pyroelectric material which do not have a perovskite structure. Two of the more common of these will also be considered.

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