Get access
Advanced Materials

FeTiTaO6: A Lead-Free Relaxor Ferroelectric Based on the Rutile Structure


  • We thank the Department of Science and Technology (DST), Government of India, for support of this research. We also thank CSIR, New Delhi, for grant of a research project (J.G.) and a fellowship (R.M.). J.G. thanks the DST for awarding a Ramanna Fellowship. Supporting Information is available online from Wiley InterScience or from the authors.


High-temperature relaxor ferroelectric behavior (Tm ∼ 550 K) is reported for the rutile-based oxide, FeTiTaO6. Our investigations of the structure and dielectric properties of MTiTaO6 (M = Al, Cr, Fe) have revealed that all the oxides possess disordered rutile structure but only the iron member shows a strong relaxor ferroelectric effect. The new material is lead-free and it is based on the rutile structure, unlike the conventional relaxors which are mostly derived from the perovskite structure.

original image
Get access to the full text of this article