Antiferroelectricity is a property of a material, and it can appear or disappear ( more generally, strengthen or weaken ) depending on temperature, pressure, external electric field, growth method, and other parameters.
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In particular, at a high enough temperature, antiferroelectricity disappears; this temperature is called the "'antiferroelectric Curie point "', even though in the analogous antiferromagnetism this transition occurs at the Neel temperature
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