Direct crystallization of perovskite phase in PMN-PT thin films prepared by polyvinylpyrrolidone modified sol-gel processing and their properties

Journal Article · Wed Jul 15 04:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.04.021· OSTI ID:21370483

Ma, J ^[1]

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1. Temasek Laboratories, Nanyang Technological University (NTU), Singapore 637553 (Singapore)

A modified sol-gel processing has been developed by using polyvinylpyrrolidone (PVP) as modifier and lead nitrate as lead source to synthesize (1-x)Pb(Mg{sub 1/3},Nb{sub 2/3})O{sub 3}-xPbTiO{sub 3} (PMN-PT) thin films with x=0.23-0.43. With PVP additions, perovskite phase could directly crystallize from amorphous films at the temperature as low as 430 deg. C via bypassing the metastable phase-pyrochlore and crystallinity was significantly enhanced. The PVP addictives have been optimized with molecular weight <630 K and the ratio of PVP monomer/PMN-PT at 0.25-1.0. XPS analysis indicates that the chemical states of the elements in the well-crystallized PMN-PT films are close to the literature data for the PMN-PT single crystals and the films possess highly desired electrical and optical properties. - Graphical abstract: A polyvinylpyrrolidone modified sol-gel processing was developed to synthesize pure-perovskite Pb(Mg{sub 1/3},Nb{sub 2/3})O{sub 3}-PbTiO{sub 3} films via bypassing pyrochlore phase.

• OSTI ID: 21370483
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 7 Vol. 182; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ALKALINE EARTH METAL COMPOUNDS
AMIDES
AZOLES
BLOOD SUBSTITUTES
CHALCOGENIDES
CHEMICAL STATE
CRYSTALLIZATION
CRYSTALS
DRUGS
ELECTRON SPECTROSCOPY
FILMS
HEMATOLOGIC AGENTS
HETEROCYCLIC COMPOUNDS
LACTAMS
LEAD COMPOUNDS
LEAD NITRATES
MAGNESIUM COMPOUNDS
MINERALS
MONOCRYSTALS
NIOBIUM COMPOUNDS
NITRATES
NITROGEN COMPOUNDS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PEROVSKITE
PEROVSKITES
PHASE TRANSFORMATIONS
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
POLYMERS
POLYVINYLS
PVP
PYROCHLORE
PYRROLES
PYRROLIDONES
REFRACTORY METAL COMPOUNDS
SOL-GEL PROCESS
SPECTROSCOPY
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
THIN FILMS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X-RAY PHOTOELECTRON SPECTROSCOPY