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Raman and Structural Characterization of Spinel Compound Zn<sub>8/5</sub>Al<sub>4/15</sub>TiO<sub>4</sub>

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Title Raman and Structural Characterization of Spinel Compound Zn8/5Al4/15TiO4
 
Creator Singh, Santosh Kumar
 
Subject X-ray Diffraction
Rietveld refinement
Spinel structure
Raman spectroscopy
 
Description 254-257
Microwave dielectric materials have been attracted enormous attention for their application in microwave communication. A new microwave dielectric material with composition Zn8/5Al4/15TiO4 was synthesized by conventional solid-state reaction method. The structure of Zn8/5Al4/15TiO4 was refined with the cubic P4332 space group (number of formula unit per unit cell, Z = 4). The Rietveld refinement study revealed the theoretical density ρ = 4.80 g/cm3 and lattice parameter a = 8.405 Å. This compound was crystallized in cubic spinel structure and 1:3 ordering was observed on the octahedral sites. Raman spectrum of the compound was collected at room temperature. Theoretical Factor group analysis for this compound predicts 40 Raman modes and 22 IR modes. However, experimentally 13 vibrational modes have been observed in the Raman spectrum which can be separated into internal TiO6 vibration and external rotation and translation TiO6 modes. Raman modes in the range of 500-800 cm-1 are assigned to internal vibrational modes.
 
Date 2023-05-25T07:14:56Z
2023-05-25T07:14:56Z
2023-05
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/61936
https://doi.org/10.56042/ijpap.v61i4.69859
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJPAP Vol.61(04) [April 2023]