Mani, Rohini ; Achary, S. N. ; Chakraborty, Keka R. ; Deshpande, S. K. ; Joy, Joby E. ; Naga, Abanti ; Gopalakrishnan, J. ; Tyagi, A. K. (2010) Dielectric properties of some MM'O4 and MTiM'O6 (M=Cr, Fe, Ga; M'=Nb, Ta, Sb) rutile-type oxides Journal of Solid State Chemistry, 183 (6). pp. 1380-1387. ISSN 0022-4596
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00224...
Related URL: http://dx.doi.org/10.1016/j.jssc.2010.04.022
Abstract
We describe an investigation of the structure and dielectric properties of MM'O4 and MTiM'O6 rutile-type oxides for M=Cr, Fe, Ga and M'=Nb, Ta and Sb. All the oxides adopt a disordered rutile structure (P42/mnm) at ambient temperature. A partial ordered trirutile-type structure is confirmed for FeTaO4 from the low temperature (17 K) neutron diffraction studies. While both the MM'O4 oxides (CrTaO4 and FeTaO4) investigated show a normal dielectric property MTiM'O6 oxides for M=Fe, Cr and M'=Nb/Ta/Sb display a distinct relaxor/relaxor-like response. Significantly the corresponding gallium analogs, GaTiNbO6 and GaTiTaO6, do not show a relaxor response at T<500 K.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Rutile Oxides; MM'O4; MTiM'O6; Dielectric; Relaxor Ferroelectric |
| ID Code: | 12541 |
| Deposited On: | 13 Nov 2010 13:23 |
| Last Modified: | 02 Jun 2011 10:21 |
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