MEASUREMENT OF DIELECTRIC AND MAGNETIC PROPERTIES 



443 



1000 



2000 



3000 



4000 



5000 



6000 



H, APPLIED FIELD IN OERSTEDS 



7000 



Fig. 7 — Measurement of x-™' ^nd k' versus applied static field for three differ- 

 ent discs, cut from the same ferrite block. 



large to be measured. Knowledge of A(l/Q)_ is not sufficient to determine 

 Xm" — k" in the resonance region because here the correction term 

 A(l/Q)+(/?i — i?2) (cf. ecjuation 26) becomes comparable to the term 

 A(l/Q)-(/?i + R'l) and is needed to compensate for the anomalous peak 

 of the A(l/Q)_ curve. The loss parameters Xm" ± k" assume values of 

 the order of 10~- below and above resonance. The estimated error of the 

 measurement is 3 X 10~'. 



