The determination of the crystal structure of Ni4Mn11Al60

It can be proved that this equation is equivalent to the one given by Kakinoki & Komura (1952), and that the formulae given by Wilson (1942), Jagodzinski (1949) and Gevers (1952, 1954) axe special cases of (11).With the aid of ( 4a) and ( 7) it can be proved that C O = } and the C/s can be calculated by solving the system (2).The values of Pm(m--0, 1,..., 2s-l) may indeed be calculated directly with the aid of ( 8), ( 9) and ( 4b), if we take into account that T(00= W~ and p(10=0(i= 1,...,s).It has already been demonstrated (Gevers 1953(Gevers , 1954) ) how the expression C,(1-z~) ~l-2x~ cos Aa+Xr ~ of formula (1) can be calculated without solving the characteristic equation (ll) and the system (2), and how an equivalent numerical equation can be calculated from measurements of the diffuse X-ray intensity.The author is grateful to Prof.