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Partial anisotropy induced by low-field thermomagnetic treatment of noncrystalline ribbons

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Il Nuovo Cimento D

Summary

The initial development of the transverse anisotropy induced by magnetic annealing is investigated for magnetizing field values which are much smaller than the ones generally employed. Measurements of Young modulus and longitudinal magnetostriction not only show their relation with induced anistotropy, as predicted in a previous paper, but also enable us to calculate the easy magnetization direction. The results are in agreement with the distributed relaxation time theory.

Riassunto

La cinetica dell’anisotropia trasversale, indotta da trattamenti termomagnetici, è stata studiata per valori del campo magnetico notevolmente piú piccoli di quelli generalmente impiegati. Si dimostra la relazione del modulo di elasticità lineare e la magnetostrizione longitudinale con l’energia di anisotropia indotta, come già predetto in un precedente lavoro. In base alla coerenza dei risultati abbiamo potuto stimare la direzione di facile magnetizzazione indotta da trattamenti termomagnetici parziali. I risultati sono in accordo con l’ipotesi teorica di tempi di rilassamento distribuiti.

Резюме

Исследуется начальное развитие поперечной анизотропии, индуцированной магнитным отжигом, в магнитных полях, напряженности которых очень малые по сравнению с обычно используемыми. Измерения модуля Юнга и продольной магнитострикции не только показывают связь с индуцированной анизотропией, но также позволяют вычислить направление легкого намагничивания. Полученные результаты согласуются с теорией.

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Lanotte, L., Luponio, C., Annunziata, A. et al. Partial anisotropy induced by low-field thermomagnetic treatment of noncrystalline ribbons. Il Nuovo Cimento D 11, 563–573 (1989). https://doi.org/10.1007/BF02457512

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  • DOI: https://doi.org/10.1007/BF02457512

PACS 81.40

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