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2 Mar 1998

Volume 72, Issue 9, pp. 1001-1123

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Unconventional hysteresis behavior in compositionally graded Pb(Zr,Ti)O3 thin films

Mark Brazier, M. McElfresh, and Said Mansour

Appl. Phys. Lett. 72, 1121 (1998); http://dx.doi.org/10.1063/1.120943 (3 pages) | Cited 65 times

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Thin-film lead–zirconate–titanate (PZT) capacitors with composition gradients normal to the substrate were fabricated via a novel technique using pulsed laser deposition. These capacitors exhibited large polarization offsets when driven by an alternating electric field. The direction of the offsets depended on the direction of the gradient with respect to the substrate. The largest offset, greater than 400 μC/cm2 when driven with a 50 V/μm field, was nearly an order of magnitude greater than any reported for other graded ferroelectric films. This difference is attributed to both the high spontaneous polarization of PZT and the high-quality films obtained by pulsed laser deposition. © 1998 American Institute of Physics.
Show PACS
77.84.Ek Niobates and tantalates
77.84.Cg PZT ceramics and other titanates
77.55.-g Dielectric thin films
77.80.Dj Domain structure; hysteresis
85.50.-n Dielectric, ferroelectric, and piezoelectric devices
84.32.Tt Capacitors
81.15.Fg Pulsed laser ablation deposition
85.40.Sz Deposition technology
77.22.Ej Polarization and depolarization
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