A study of structural, optical and dielectric properties of crystalline Sr{sub 2}Nb{sub 2}O{sub 7} nanoparticles synthesized by a modified combustion technique

Journal Article · Tue Jan 28 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4862016· OSTI ID:22264093

Mathai, K. C. ^[1]; Vidya, S.; Thomas, J. K. ^[2]; Solomon, Sam ^[3]

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1. Department of Physics, St. Aloysius' College, Edathua, Alappuzha, Kerala (India)
2. Electronic Materials Research Laboratory, Department of Physics, Mar Ivanios College, Thiruvananthapuram- 695015, Kerala (India)
3. Department of Physics, St. John's College, Anchal-691306, Kerala (India)

Nanocrystalline Strontium Pyroniobate is synthesized by a novel auto-igniting combustion technique. The X-Ray diffraction studies reveal that Strontium Niobate possesses orthorhombic structure. Phase purity and structure of the nanopowder is further examined using Fourier-Transform Infrared and Raman spectroscopy. The average particle size of the as prepared nanoparticles from the Transmission Electron Microscopy is 30 nm. Sr{sub 2}Nb{sub 2}O{sub 7} is a photoluminescent material and the optical band gap determined from the UV-DRS spectrum is 2.7eV. The sample is sintered at an optimized temperature of 1350°C for 2 hours and obtained maximum density. The dielectric constant and loss factor values obtained at 5MHz for a well-sintered Strontium Niobate pellet is found to be 40 and 3.9×10{sup −3} respectively, at room temperature.

• OSTI ID: 22264093
• Journal Information: AIP Conference Proceedings, Vol. 1576, Issue 1; Conference: OMTAT 2013: 2. international conference on optoelectronic materials and thin films for advanced technology, Kochi, Kerala (India), 3-5 Jan 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
COMBUSTION
CRYSTALS
DENSITY
FOURIER TRANSFORMATION
NANOSTRUCTURES
NIOBATES
ORTHORHOMBIC LATTICES
PARTICLE SIZE
PARTICLES
PERMITTIVITY
PHOTOLUMINESCENCE
RAMAN SPECTROSCOPY
SPECTRA
STRONTIUM
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION