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Reliability of the Properties of (Pb,La)(Zr,Ti)O3Capacitors with Non–noble Metal Oxide Electrodes stored in anH2 Atmosphere
Published online by Cambridge University Press: 19 February 2016
Abstract
We fabricated ferroelectric (Pb,La)(Zr,Ti)O3 (PLZT) capacitors withSn:In2O3 (ITO) or Pt top electrodes and investigatedthe ferroelectric properties of these PLZT capacitors. The shape ofpolarization–voltage hysteresis loops was essentially unchanged andthe decrease in the remnant polarization of the ITO/PLZT/Pt capacitors wassmaller than that of the Pt/PLZT/Pt capacitors after annealing with 3%D2 (in N2) at 200°C and 1 Torr(i.e., FGAD). Time of flightsecondary mass spectrometry revealed that the D atoms were incorporated into thePLZT film of the Pt/PLZT/Pt capacitors after 3% D2 annealing,resulting in a decrease in the ferroelectric properties. In comparison, no D ionsignal was detected in the PLZT film after FGAD for ITO/PLZT/Ptcapacitors.
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