In NKBT ceramic system, as we go on increasing K content at Na site, the grain size decreases. What are the possible reasons for this statement?

(Na1-xKx)0.5Bi0.5TiO3 (NKBT)(0 ≤ x ≤ 0.30) is a ferroelectric ceramic. Ionic radii of Na+ is 1.39 A and K+ is 1.64 A. Please provide detail solution with proper justification.

06 February 2023 9,502 1 View