Raman effect, structural and dielectric properties of sol-gel synthesized polycrystalline GaFe{sub 1-x}Zr{sub x}O{sub 3} (0≤x≤0.15)

Journal Article · Mon May 23 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4948218· OSTI ID:22608909

Kumar, Rajeev; Mall, Ashish Kumar ^[1]; Gupta, Rajeev ^[1]

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1. Materials Science Programme, Indian Institute of Technology Kanpur, Kanpur 208 016 (India)

Polycrystalline ceramic samples of Zirconium (Zr)-doped GaFeO{sub 3} (GaFe{sub 1-x}Zr{sub x}O{sub 3}) were studied using powder X-ray diffraction, complex impedance spectroscopy and Raman spectroscopic measurements to understand the effect of Zr doping on the structural and dielectric properties. The samples with varying Zr content were prepared by Sol-Gel method. X-ray data analysis confirmed the formation of single phase material without formation of any secondary phases and all are crystallized in Pc2{sub 1}n orthorhombic symmetry. Rietveld refinement of the X-ray data suggested an increase in the lattice constants due to size effect and decreases on x = 0.15 due to the effect of change in interplanner spacing. Impedance studies on the samples showed that the dielectric constant increases while loss tangent decrease as the Zr content increases. Raman scattering on GaFe{sub 1-x}Zr{sub x}O{sub 3} (x = 0, 0.05, 0.10, & 0.15) used to understand the composition dependence on phonon modes at room temperature. On Zr doping, Raman modes frequencies shifts to lower energies consistent with the X-ray data.

• OSTI ID: 22608909
• Journal Information: AIP Conference Proceedings, Vol. 1731, Issue 1; Conference: DAE solid state physics symposium 2015, Uttar Pradesh (India), 21-25 Dec 2015; Other Information: (c) 2016 Author(s); 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
CERAMICS
DIELECTRIC MATERIALS
DOPED MATERIALS
FERRITES
GALLIUM COMPOUNDS
IMPEDANCE
LATTICE PARAMETERS
ORTHORHOMBIC LATTICES
PERMITTIVITY
POLYCRYSTALS
RAMAN EFFECT
SOL-GEL PROCESS
SPECTROSCOPY
SYMMETRY
TEMPERATURE RANGE 0273-0400 K
X-RAY DIFFRACTION
ZIRCONATES
ZIRCONIUM
ZIRCONIUM COMPOUNDS