A new form of MgTa2O6 obtained by the molten salt method

Ganguli, Ashok K. ; Nangia, Shikha ; Thirumal, Meganathan ; Gai, Pratibha L. (2006) A new form of MgTa2O6 obtained by the molten salt method Journal of Chemical Sciences, 118 (1). pp. 37-42. ISSN 0253-4134

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Official URL: http://www.ias.ac.in/chemsci/Pdf-Jan2006/37.pdf

Related URL: http://dx.doi.org/10.1007/BF02708763


Using molten salt route (with NaCl/KCl as the salt) we have been able to synthesize a new form of magnesium tantalate at 850°C. Powder X-ray diffraction data could be indexed on an orthorhombic unit cell with lattice parameters, 'a' = 15.36(1) Å, 'b' = 13.38(1) Å and 'c' = 12.10(1) Å. High resolution transmission electron microscopy and electron diffraction studies confirm the results obtained by X-ray studies. Energy dispersive X-ray spectroscopy helps ascertain the composition of MgTa2O6. The title compound shows a dielectric constant of ~24 with a low dielectric loss of 0·006 at 100 kHz at room temperature. Dielectric constant is nearly unchanged with rise in temperature while the loss shows a very marginal increase (0·007 at 300°C).

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:MgTa2O6 ; Molten Salt Method; High Resolution Transmission Electron Microscopy; Dielectric Properties
ID Code:61995
Deposited On:16 Sep 2011 03:53
Last Modified:18 May 2016 11:27

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