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    Processing method for grain-oriented lead-free piezoelectric Na0.5Bi0.5TiO3—BaTiO3 ceramics exhibiting giant performance

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    Date
    2017-09-26
    Inventor
    Priya, Shashank
    Maurya, Deepam
    Metadata
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    Abstract
    Textured ceramic compositions having improved piezoelectric characteristics as compared with their random counterparts are provided. Methods of making the compositions and devices using them are also included. More particularly, compositions comprising textured ceramic Na0.5Bi0.5TiO3—BaTiO3(NBT-BT) materials synthesized from high aspect ratio NBT seeds exhibit improved characteristics, including an increased longitudinal piezoelectric constant (d33) and magnetoelectric coupling coefficient over randomly oriented NBT-BT. Additionally provided are compositions comprising of nanostructured Na0.5Bi0.5TiO3—BaTiO3 ferroelectric whiskers having a high aspect ratio. Nanostructured whiskers can be used to improve the piezoelectric properties of the bulk ceramics. The inventive materials are useful in microelectronic devices, with some finding particular application as multilayer actuators and transducers.
    URI
    http://hdl.handle.net/10919/87818
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    • Scholarly Works, Department of Mechanical Engineering [321]
    • Scholarly Works, Institute for Critical Technology and Applied Science (ICTAS) [62]
    • Virginia Tech Patents [620]

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