28.12: Questions

TLP Library I · LibreTexts

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    Quick questions

    You should be able to answer these questions without too much difficulty after studying this TLP. If not, then you should go through it again!

    What symmetry element must be absent for a material to be ferroelectric?

    Answer

    C

    Which of these is not a correct definition of polarisation?

    Answer

    D

    Why are domains in crystals found in a manner such that their polarisation is coupled?

    Answer

    A

    What is needed to make ferroelectric domains useful as a binary memory store?

    Answer

    B

    If a ferroelectric, 50mm by 10 mm, has a measured surface charge of 2.5 x 10-4 Coulombs, and a lattice parameter of 5 x 10-10, what is the dipole moment in a single cubic unit cell?

    Answer

    A

    What field has to be applied to give a ferroelectric, with a square hysteresis loop, zero net polarisation?

    Answer

    C

    This page titled 28.12: Questions was last modified on Thu, 26 Nov 2020 20:31:36 GMT and is shared under a CC BY-NC-SA 2.0 license and was authored, remixed, and/or curated by Dissemination of IT for the Promotion of Materials Science (DoITPoMS) via source content that was edited to the style and standards of the LibreTexts platform.