Estimate of the Anisotropy Field of Strontium Ferrite from Powders Using the Stoner-Wohlfarth Model

Marcos Flavio de Campos; Sergio A. Romero; Daniel Rodrigues

doi:10.4028/www.scientific.net/MSF.881.128

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HomeMaterials Science ForumMaterials Science Forum Vol. 881Estimate of the Anisotropy Field of Strontium...

Estimate of the Anisotropy Field of Strontium Ferrite from Powders Using the Stoner-Wohlfarth Model

Abstract:

The isotropic Stoner-Wohlfarth model can be applied for the determination of the anisotropy field in powders. Samples of strontium ferrite - SrFe₁₂O₁₉ – were measured in Vibrating Sample Magnetometer (VSM). By means of the fitting of the first quadrant of the hysteresis curve the anisotropy field was estimated as 19-20 kOe for the SrFe₁₂O₁₉ phase. The main advantage of the method is its simplicity, because compacting or sintering of the powder samples is not necessary

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Materials Science Forum (Volume 881)

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128-133

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https://doi.org/10.4028/www.scientific.net/MSF.881.128

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November 2016

Authors:

Marcos Flavio de Campos*, Sergio A. Romero, Daniel Rodrigues

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Magnets, Stoner-Wohlfarth, Strontium Ferrite

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