Magnetoelastic Villari effect in Mn–Zn ferrites

The relationship between magnetic induction B, and compressive stress − σ in Mn–Zn ferrites, of very low magnetostrictive constant λ s, were investigated. The Villari effect and its technical importance is discussed. It is shown that in Mn–Zn ferrites, with λ s≈0, the Villari point occurs for σ≈0 an...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2000-06, Vol.215, p.231-233
Main Author: Bienkowski, Adam
Format: Article
Language:English
Subjects:
Ferrites
Magnetoelastic sensors
Magnetoelastic Villari effect
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Summary:The relationship between magnetic induction B, and compressive stress − σ in Mn–Zn ferrites, of very low magnetostrictive constant λ s, were investigated. The Villari effect and its technical importance is discussed. It is shown that in Mn–Zn ferrites, with λ s≈0, the Villari point occurs for σ≈0 and that these ferrites exhibit, for σ ≫0 , considerable magnetoelastic sensitivity — in spite of their small λ s value. Hence, a low magnetostriction constant λ s does not exclude the possibility to apply such materials in magnetoelastic sensors.
ISSN:0304-8853
DOI:10.1016/S0304-8853(00)00124-4