1. Magnetostrictive effect Magnetostrictive effect: Nyob rau hauv qhov kev txiav txim ntawm ib qho kev sib nqus sab nraud, qhov loj me ntawm ferromagnetic hloov pauv; tom qab lub tshav sib nqus sab nraud tau muab tshem tawm, nws rov mus rau nws qhov ntev ntev.
2. Magneto-mechanical coupling coefficient k Thaum cov permalloy nyias sawb zoo siab los ntawm kev sib pauv hloov chaw nyob rau hauv ib qho chaw muaj hlau nplaum, vim muaj cov nyhuv magnetostrictive thiab piezomagnetic effect, hloov pauv hloov ntawm lub zog sib nqus thiab lub zog hluav taws xob tshwm sim hauv cov nyias nyias. Kev hloov pauv ntawm lub zog hu ua magneto-mechanical coupling. Lub tshuab magneto-mechanical coupling coefficient k yog siv los ntsuas nws qhov loj me, thiab k tus nqi yog txiav txim siab los ntawm cov qauv hauv qab no. Lub hauv paus tseem ceeb hauv cov cim acousto-sib nqus yog ib daim nyias nyias ntawm permalloy.
3. Qhov kev sib tshuam lub suab sib nqus acousto-sib nqus daim ntawv lo yog muaj lub thawv yas me me nrog qhov ntev ntev li 40 hli, qhov dav ntawm 8" 14mm, thiab tuab ntawm 1 hli (cov uas twb muaj lawm thinner).