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// Scilab Code Ex 1.27 :Page-36 (2006)
clc; clear;
r_bcc = 0.126; // Atomic radius of the iron atoms in the bcc structure, nm
r_fcc = 0.129; // Atomic radius of the iron atoms in the fcc structure, nm
a_bcc = 4*r_bcc/sqrt(3);
a_fcc = 4*r_fcc/sqrt(2);
V_bcc = 2*a_bcc^3; // Volume of bcc unit cell, nm cube
V_fcc = a_fcc^3; // Volume of fcc unit cell, nm cube
delta_V = V_fcc - V_bcc; // Change in volume from bcc to fcc structure, nm cube
V = V_bcc;
V_frac = delta_V/V; // Fractional change in volume from bcc to fcc structure
printf("\nThe percentage change in volume from bcc to fcc structure = %3.1f percent", V_frac*100);
// Result
// The percentage change in volume from bcc to fcc structure = -1.4 percent
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