Answer to Question #118758 in Inorganic Chemistry for Yuki

Question #118758
What is the structural origin of the pyroelectric property?
1
Expert's answer
2020-06-02T14:07:36-0400

The structural cause of the pyroelectric effect is the low symmetry of the crystals of the pyroelectric substance.

In the first place the unit cell of pyroelectric crystals has no center of symmetry, and secondly it is polar. For this reason, the macrocrystal tends to be spontaneously polarized by changes in temperature and by mechanical action too.


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