Figure 3
(a) d1(d2) marked in the crystal structure as the thickness of the Sr (Ba)-containing bipyramidal layers (b) Variation of d1 and J1 (c) d2 and J2 with doping (d) d3(d4) marked in the crystal structure as the inter bilayer distance separated by a layer of Y-ions (e) Variation of d3 and J3 (f) d4 and J4 with doping.
