Table 3. Refined parameters obtained from Rietveld refinements on neutron data.

Parameter	Series A			Series B		Series C
	Ba0.69Sr0.24Ca0.07TiO3	Ba0.74Sr0.12Ca0.15TiO3	Ba0.78Ca0.22TiO3	Ba0.8Sr0.2TiO3	Ba0.6Sr0.2Ca0.2TiO3	Ba0.68Sr0.32TiO3
a (Å)	3.96435(3)	3.96279(3)	3.96231(7)	3.97818(4)	3.94981(4)	3.96849(3)
c (Å)	3.98716(5)	3.99661(4)	4.00921(9)	4.00558(6)	3.97230(7)	3.98159(4)
z (A-site)	0.514(2)	0.512(14)	0.509(2)	0.512(2)	0.511(3)	0.519(2)
Uiso(A-site) (Å2)	0.0056(2)	0.0097(2)	0.0073(3)	0.0079(2)	0.0106(2)	0.0070(2)
Uiso (Ti) (Å2)	0.0033(4)	0.0071(3)	0.0050(4)	0.0071(4)	0.0064(5)	0.0042(4)
z (O1)	0.530(2)	0.5332(1)	0.536(1)	0.527(1)	0.529(2)	0.529(1)
Uiso (O1) (Å2)	0.0079(6)	0.0115(4)	0.0100(5)	0.0098(5)	0.0140(7)	0.0093(5)
z (O2)	0.029(1)	0.030(1)	0.031(1)	0.029(1)	0.029(2)	0.031(1)
Uiso (O2) (Å2)	0.0058(3)	0.0101(2)	0.0080(3)	0.0087(3)	0.0095(3)	0.0071(3)
wRp	4.11	4.34	5.90	4.17	4.11	4.15
Ti-O1 (Å)	1.876(6)	1.866(4)	1.861(5)	1.873(5)	1.870(7)	1.875(5)
Ti-O1 (Å)	2.111(6)	2.131(4)	2.148(5)	2.133(5)	2.102(7)	2.107(5)
Ti-O2 (Å)	1.9856(3)	1.9851(2)	1.9850(3)	1.9924(3)	1.9782(4)	1.9881(3)
Ti-O-Ti (°)	173.2(3)	173.0(2)	172.9(3)	173.4(3)	173.4(4)	172.9(2)
A-O1 (Å)	2.8039(1)	2.8034(1)	2.8039(2)	2.8143(1)	2.7938(1)	2.8604(7)
A-O2 (Å)	2.767(3)	2.762(3)	2.756(3)	2.774(3)	2.753(4)	2.778(3)
A-O2 (Å)	2.857(4)	2.862(3)	2.882(4)	2.872(3)	2.850(4)	2.844(3)