Microwave dielectric properties and vibrational spectroscopic analysis of MgTe2O5 ceramics
Subodh, G., Ratheesh, R., Jacob, M.V., and Sebastian, M.T. (2008) Microwave dielectric properties and vibrational spectroscopic analysis of MgTe2O5 ceramics. Journal of Materials Research, 23 (6). pp. 1551-1556.
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MgTe2O5 ceramics were prepared by solid-state route. These materials were sintered in the temperature range of 640–720 °C. The structure and microstructure of the compound was investigated using x-ray diffraction (XRD), Fourier transform infrared (FTIR), Raman spectroscopy, and scanning electron microscopy (SEM) techniques. The dielectric properties of the ceramics were studied in the frequency range 4–6 GHz. The MgTe2O5 ceramics have a dielectric constant (ϵr) of 10.5, quality factors (Qu × f) of 61000 at 5.3 GHz, and temperature coefficient of resonant frequency (τf) of −45 ppm/°C at the optimized sintering temperature of 700 °C. The microwave dielectric properties of these materials at cryogenic temperatures were also investigated.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||dielectric materials; microwave characterisation; permittivity; wireless communication|
Reproduced with permission from Materials Research Society.
G. Subodh, R. Ratheesh, M.V. Jacob, and M.T Sebastian: Microwave dielectric properties and vibrational spectroscopic analysis of MgTe2O5 ceramics. J. Mater. Res. 23, 6 (2008).
|Date Deposited:||02 Mar 2010 03:12|
|FoR Codes:||09 ENGINEERING > 0912 Materials Engineering > 091208 Organic Semiconductors @ 100%|
|SEO Codes:||81 DEFENCE > 810104 Emerging Defence Technologies @ 40%
86 MANUFACTURING > 8610 Ceramics, Glass and Industrial Mineral Products > 861002 Ceramics @ 30%
89 INFORMATION AND COMMUNICATION SERVICES > 8901 Communication Networks and Services > 890103 Mobile Data Networks and Services @ 30%
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