Fatigue anisotropy in pulsed laser deposited PYbN-PT thin films

Bornand Véronique, Trolier Mc Kinstry Susan

Research output: Contribution to journalArticle

Abstract

Heterostructures consisting of a (100) LaA1O3 (LAO) or (111) SrTiO3 (STO) substrate, a SrRuO3 (SRO) metallic oxide bottom electrode, and a (1-x) Pb[Yb1/2Nb1/2]O3 - x PbTiO3 (PYbN-PT, x∼0.5 or 0.6) ferroelectric thin film were grown by the pulsed laser deposition process. The films were perovskite structured, with orientations that ranged from highly '001'pc-oriented PYbN-PT/SRO/LAO to highly '111'pc-oriented PYbN-PT/SRO/STO multi-layer systems. According to the crystal orientation, the ferroelectric and fatigue characteristics of such as-grown planar capacitors vary significantly. In particular, '001'pc-heteroepitaxial thin films result in fatigue-free capacitors up to 1011 cycles while '111'pc-oriented heterostructures exhibit a marked degradation of the switchable polarization by ac voltage cycling. These data agree with recent findings of fatigue anisotropy in relaxor ferroelectric-PbTiO3 single crystals. This orientation dependence may result from differences in the domain configuration and switching process.

Original languageEnglish (US)
Pages (from-to)141-144
Number of pages4
JournalAnnales de Chimie: Science des Materiaux
Volume26
Issue number1
DOIs
StatePublished - Jan 1 2001

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Pulsed lasers
Anisotropy
Fatigue of materials
Crystal orientation
Thin films
Ferroelectric materials
Heterojunctions
Capacitors
Ferroelectric thin films
Pulsed laser deposition
Perovskite
Oxides
Single crystals
Polarization
Degradation
Electrodes
Electric potential
Substrates
strontium titanium oxide

All Science Journal Classification (ASJC) codes

  • Materials Chemistry

Cite this

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title = "Fatigue anisotropy in pulsed laser deposited PYbN-PT thin films",
abstract = "Heterostructures consisting of a (100) LaA1O3 (LAO) or (111) SrTiO3 (STO) substrate, a SrRuO3 (SRO) metallic oxide bottom electrode, and a (1-x) Pb[Yb1/2Nb1/2]O3 - x PbTiO3 (PYbN-PT, x∼0.5 or 0.6) ferroelectric thin film were grown by the pulsed laser deposition process. The films were perovskite structured, with orientations that ranged from highly '001'pc-oriented PYbN-PT/SRO/LAO to highly '111'pc-oriented PYbN-PT/SRO/STO multi-layer systems. According to the crystal orientation, the ferroelectric and fatigue characteristics of such as-grown planar capacitors vary significantly. In particular, '001'pc-heteroepitaxial thin films result in fatigue-free capacitors up to 1011 cycles while '111'pc-oriented heterostructures exhibit a marked degradation of the switchable polarization by ac voltage cycling. These data agree with recent findings of fatigue anisotropy in relaxor ferroelectric-PbTiO3 single crystals. This orientation dependence may result from differences in the domain configuration and switching process.",
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Fatigue anisotropy in pulsed laser deposited PYbN-PT thin films. / Véronique, Bornand; Susan, Trolier Mc Kinstry.

In: Annales de Chimie: Science des Materiaux, Vol. 26, No. 1, 01.01.2001, p. 141-144.

Research output: Contribution to journalArticle

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