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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.117  No.1365 (May) (2009)  >  pp.689-692

Journal of the Ceramic Society of Japan
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Structural and electrical properties of Mg2TiO4

Shalendra KUMAR1), Ravi KUMAR2), B. H. KOO1), H. CHOI1), Dong Uk KIM1) and Chan Gyu LEE1)
1) School of Nano and Advanced Materials Engineering, Changwon National University
2) Materials Science Division, Inter-University Accelerator Centre

  We have studied the structural and electrical properties of Mg2TiO4 inverse spinel using X-ray diffraction, Raman spectroscopy, ac conductivity and dielectric spectroscopy. Polycrystalline sample of Mg2TiO4 was prepared by the conventional solid state reaction technique. Powder X-ray diffraction analysis indicates single phase nature of inverse spinel Mg2TiO4. Raman study also infers that Mg2TiO4 exhibits inverse spinel structure. The dielectric constant measured as a function of frequency exhibits a resonance peak at 9 MHz. The dielectric constant measured as function of temperature (100-300 K) at 500 kHz is found to increase with temperature. The value of the loss tangent (tanδ) was found to be small ∼ 0.01 through out the whole temperature range. The value of the exponent (s), evaluated using the power law σAC = ωS, is found to be ∼1, which indicates the good correlation of the hoping of carriers in the system.

X-ray differaction, Dielectric constant, Dielectric loss, Raman spectroscopy

Received: November 04, 2008
Accepted: January 15, 2009 , Published online: May 01, 2009
Copyright (c) 2009 The Ceramic Society of Japan



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