The piezomagnetic coupling coefficient (the <<stress sensitivity>>) is quantitatively investigated below room temperature and a comparison is made among polycrystalline samples and amorphous ones. The technique used is an original one. It experimentally consists in the measurement of the amplitude of magnetoelastic waves, their resonance frequency and differential susceptibility; theoretically, it consists in coupling Newton's law of force with the piezomagnetic state equations. The results clearly show different responses of polycrystalline samples with respect to the amorphous ones; in particular the nonmonotonic behaviour of the <<stress sensitivity>> for metallic glasses is interesting for establishing their actual magnetic states at low temperature.
Stress Sensitivity Coefficient In Polycrystalline and Amorphous Ferromagnetic Materials Below Room-temperature / Lanotte, Luciano; C., Luponio. - In: NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA. D CONDENSED MATTER, ATOMIC, MOLECULAR AND CHEMICAL PHYSICS, BIOPHYSICS. - ISSN 0392-6737. - STAMPA. - 15:(1993), pp. 17-22. [10.1007/BF02455847]
Stress Sensitivity Coefficient In Polycrystalline and Amorphous Ferromagnetic Materials Below Room-temperature
LANOTTE, LUCIANO;
1993
Abstract
The piezomagnetic coupling coefficient (the <I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.