FRIDAY 2 AGAIN Ni/Al fitted to apb001 and elastic constants
 -0.6469208776    1.1392692848   -0.6655106072   1.4680219296 0.0 0.0
4.35174 4.24473 3.88803 2.96061 0.8 0.7
 3.5670016  
This is the cross potential which appears on the sheet NIAl notes