Perovskite phase transformation in 0.65Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}-0.35PbTiO{sub 3} nanoparticles derived by sol-gel

Journal Article · Sun Jan 15 04:00:00 EST 2012 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3677974· OSTI ID:22038850

Singh, Satyendra ^[1]; Krupanidhi, S B ^[1]

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1. Materials Research Centre, Indian Institute of Science, Bangalore - 560012 (India)

Fabrication of 0.65Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}-0.35PbTiO{sub 3} (PMN-PT) nanoparticles with an average size of about 40 nm and their phase transformation behavior from pyrochlore to perovskite phase is investigated. A novel sol-gel method was used for the synthesis of air-stable and precipitate-free diol-based sol of PMN-PT which was dried and partially calcined at 450 deg. C for 1 h to decompose organics and bring down the free energy barrier for perovskite crystallization and then finally annealed in the temperature range 600 to 700 deg. C. Annealed at around 700 deg. C for 1 h, PMN-PT gel powder exhibited nanocrystalline morphology with perovskite phase as confirmed by the transmission electron microscopy and X-ray diffraction techniques.

• OSTI ID: 22038850
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 2 Vol. 111; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ANNEALING
CALCINATION
CERAMICS
CRYSTAL STRUCTURE
CRYSTALLIZATION
CRYSTALS
FERROELECTRIC MATERIALS
LEAD COMPOUNDS
MAGNESIUM OXIDES
MORPHOLOGY
NANOSTRUCTURES
NIOBATES
PARTICLE SIZE
PARTICLES
POWDERS
PRECIPITATION
SOL-GEL PROCESS
TITANATES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION