ELASTIC CONSTANTS AND LOSSES IN NICKEL 



970 



0.7 



0.6 



0.5 



0.4 



0.3 



5> 



0.2 



0.1 



-0.1 



■0.2 



1000 2000 3000 4000 5000 



MAGNETIC FIELD STRENGTH, H, IN OERSTEDS 



6000 



Fig. 8 — Change in velocity in percent from demagnetized value as a function of the 

 magnetizing field for a longitudinal wave in a (110) section when the particle velocity is 

 along the [1 10] direction and the field along the [110] direction. 



Since in terms of the Lam6 elastic constants, the value of Young's modulus 

 is 



Eo 



"(:-m) 



(10) 



one finds that the difference between the saturated and demagnetized value 

 of Young's modulus divided by the demagnetized value is 



