TITLE

Synergistic information encoding by combinatorial pulse operation of ferroelectrics

AUTHOR(S)
Ricinschi, Dan; Nicastro, Damian; Kanashima, Takeshi; Okuyama, Masanori
PUB. DATE
November 2009
SOURCE
Applied Physics Letters;11/16/2009, Vol. 95 Issue 20, p202905
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We explore beyond binary memory capability of ferroelectrics, aiming to render them able to encode multiple bit information, based on operation in a regime spanning several polarization reversal mechanisms. Accessing a Pb(Zr,Ti)O3 ceramic capacitor with combinatorial sequences of pulses whose amplitude, width, and polarity are all allowed to vary during polarization reversal, eight partially switched multiple-level memory states are reproducibly generated. We demonstrate, with aid of applied mathematics, that this operation protocol summons the electric-field-dependent microstructure assembly laws of the material into allowing multiple bit data encoding and storage of up to 64 bits of information in a single ferroelectric capacitor.
ACCESSION #
45366453

 

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