Ferrimagnetic resonance in polycrystalline ferrite and garnet disks at L-band frequencies

I An ex perinlC' nLa l st ud y m a de on t he measurem en t of the gy r omagnd ie ral i o an d lin e \ th o f four fC' rrim agneti e maLrrials at L-band usin g th in disk-shaprd sa mp ll's in it recta ngu lar TE lOz mo de cav i ty at l 107 :-L e/s is desc ribed. T he st udy cmphasi r.l'd f('ITi ll1agllPL i c resonanL IlwaS UremCll ts on a one ha lf inch dia mete r sa mp](' of a gi vcn m :,Ll'rial as a funcLi on of aspect ratio . Expe rim cn ta l l'('suHs indi cate t haL fo r th rl'e m ate ri als l il l' gY I'O ll1 itgnel i c rat io cou ld b (' accurat.e l y ca l cu lated fro m Kit tc l 's (' quat i on fo r aspC'cl ralios of .')0 0 1' grpal;c r.