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INFLUENCE OF MICROSTRUCTURE ON ACOUSTIC EMISSION ALONG HYSTERESIS LOOP OF POLYCRYSTALLINE FERRIMAGNETS
1988
Le Journal de Physique Colloques
Preserved Fulltext
The acoustic emission AE in stoichiometric YIG samples has been investigated as a function of microstructure; the grain size Dm ranges from 2 to 30 pm, the porosity p from 0.4 to 12 % . AE is always proportional to the hysteresis losses. AE increases with Dm and with llp, but Dm is the dominant parameter.
doi:10.1051/jphyscol:19888874
fatcat:qc7d4i23d5b3xmwyjwqjppcnpm