a.



O o 0/ C)/.0 /0 0/* 0
0 *o 04 ,,o o,* o 0 o
*o?1 oOoo oa0o


o 0,o oW"o 0'0 0 o0.r
So 'O u o'g o O & o'e
 A





 002

 B A
 m a


Figure 2.20


* O0\ 0 0o 0O o0 s
* oo o* oOoB* O
o'o* CO- o o oO* o
 B




022
0


The Pt2Mo phase;
a.) Pt2Mo variants along FCC axes.
A and B can exist along each axis.
b.) B = [100] SADP with variants.