Summary
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.
Similar content being viewed by others
References
R. Truell, C. Elbaum andB. B. Chick:Ultrasonic Methods in Solid State Physics (Academic Press, New York, NY, 1969).
L. Lanotte, C. Luponio andF. Porreca:J. Appl. Phys.,50, 438 (1979).
L. Lanotte, C. Luponio andF. Porreca:J. Appl. Phys.,54, 4520 (1983).
L. Lanotte, C. Luponio, F. Porreca andV. Tagliaferri:Nuovo Cimento D,1, 802 (1982).
L. Lanotte:J. Phys. (Paris),44, L-541 (1983).
L. Lanotte, C. Luponio andF. Porreca:Nuovo Cimento D,9, 633 (1987).
L. Lanotte, C. Luponio andF. Porreca:Nuovo Cimento D,11, 1763 (1982).
L. Lanotte, C. Luponio andA. Annunziata:J. Magn. & Magn. Mater,80, 153 (1989).
L. Lanotte andC. Luponio:J. Magn. & Magn. Mater,104, 2006 (1992).
L. Lanotte andP. Silvestrini:J. Phys. (Paris),12, C8–1317 (1988).
R. M. Bozorth:Ferromagnetism (Van Nostrand, Princeton, NJ, 1968), p. 689.
A. Chamberod, W. Chamberod andJ. Hillairet:Les amorphes metalliques, Ecole d’Hiver-Aussois (Les Edition de Physique, 1983).
L. Lanotte, C. Luponio andF. Porreca:Nuovo Cimento D,6, 468 (1985).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lanotte, L., Luponio, C. Stress sensitivity coefficient in polycrystalline and amorphous ferromagnetic materials below room temperature. Il Nuovo Cimento D 15, 17–22 (1993). https://doi.org/10.1007/BF02455847
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02455847