Polar, chiral, and non-centro-symmetric ferroelectric materials, memory cells including such materials, and related devices and methods
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United States of America Patent
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Mar 26, 2019
Grant Date -
Nov 26, 2015
app pub date -
May 20, 2014
filing date -
May 20, 2014
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Abstract
A ferroelectric memory device includes a plurality of memory cells. Each of the memory cells comprises at least one electrode and a ferroelectric crystalline material disposed proximate the at least one electrode. The ferroelectric crystalline material is polarizable by an electric field capable of being generated by electrically charging the at least one electrode. The ferroelectric crystalline material comprises a polar and chiral crystal structure without inversion symmetry through an inversion center. The ferroelectric crystalline material does not consist essentially of an oxide of at least one of hafnium (Hf) and zirconium (Zr).
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