Table 3: Obtained values of elastic constants at T=0 K and P= 0 GPA Table 3: Obtained values of elastic constants at T=0 K and P= 0 GPA Table 3: Obtained values of elastic constants at T=0 K and P= 0 GPA
Parameter Ca2SnFeO6 Ba2SnFeO6
C11 320.90 234.85
C12 65.56 85.45
C44 136.43 106.93
B (GPa) = GH = (GV + GR)/2 150.67 135.25
G (GPa)=BV=BR= (C11+2C12)/3 132.85 92.61
Y (GPa) = 9BG/(3B+G) 199.27 226.20
B/G 1.13 1.46
CP (GPa) = C12 – C44 -70.87 -21.48
A = 2 C44/( C11 - C12) 1.06 1.43
ECoh 5.25 5.23