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

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 1/3,Nb 2/3)O 3– xPbTiO 3 (PMN–PT) thin films with x=0.23–0.43. With PVP additions, perovskite phase could directly crystallize from amorphous fil...

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Veröffentlicht in:	Journal of solid state chemistry 2009-07, Vol.182 (7), p.1780-1785
Hauptverfasser:	Du, Z.H., Zhang, T.S., Zhu, M.M., Ma, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	ALKALINE EARTH METAL COMPOUNDS AMIDES AZOLES BLOOD SUBSTITUTES CHALCOGENIDES CHEMICAL STATE Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties CRYSTALLIZATION CRYSTALS DRUGS Electrical ELECTRON SPECTROSCOPY Equations of state, phase equilibria, and phase transitions Exact sciences and technology HEMATOLOGIC AGENTS HETEROCYCLIC COMPOUNDS INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY LACTAMS LEAD COMPOUNDS LEAD NITRATES MAGNESIUM COMPOUNDS MINERALS MONOCRYSTALS NIOBIUM COMPOUNDS NITRATES NITROGEN COMPOUNDS OPTICAL PROPERTIES Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of bulk materials and thin films ORGANIC COMPOUNDS ORGANIC NITROGEN COMPOUNDS ORGANIC POLYMERS OXIDE MINERALS OXIDES OXYGEN COMPOUNDS PEROVSKITE Perovskite crystallization PEROVSKITES PHASE TRANSFORMATIONS PHOTOELECTRON SPECTROSCOPY PHYSICAL PROPERTIES Physics PMN–PT thin films POLYMERS POLYVINYLS PVP PYROCHLORE PYRROLES PYRROLIDONES REFRACTORY METAL COMPOUNDS SOL-GEL PROCESS Solid-solid transitions Specific phase transitions SPECTROSCOPY Structure of solids and liquids crystallography Structure of specific crystalline solids TEMPERATURE RANGE TEMPERATURE RANGE 0400-1000 K THIN FILMS TITANATES TITANIUM COMPOUNDS TRANSITION ELEMENT COMPOUNDS X-RAY PHOTOELECTRON SPECTROSCOPY
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Zusammenfassung:	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 1/3,Nb 2/3)O 3– xPbTiO 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 °C via bypassing the metastable phase-pyrochlore and crystallinity was significantly enhanced. The PVP addictives have been optimized with molecular weight
ISSN:	0022-4596 1095-726X
DOI:	10.1016/j.jssc.2009.04.021