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The perminvar effect and magnetic after-effect in magnesium manganese ferrite

Перминваровый эффек т и магнитное последействие у марг анец-магниевого феррита

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Abstract

An unstable perminvar effect was found in magnesium manganese ferrite at a temperature of −195°C and its connection with the magnetic after-effect was investigated. The analysis carried out on the basis of Néel's theory showed that both effects are a result of the same diffusion process. The experimental results also show that 180° Bloch walls are displaced when the sample is magnetized.

Abstract

У марганец-магниевог о феррита был установ лен при температуре − 195° C перминваровый qeффект, который нестаб илъный во времени, и бы ла исследована его св язъ с магнитным последействием. Обсу ждение сделано на оен ове теории Нееля и пок азано, что оба эффекта являются следствием того-же ди ффузионного процесс а. Эксперименталъные резулътаты показыва ют далее, что намагнич ивание образца обусл овлено емещениями 180-ти градусных границ д оменов.

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Authors and Affiliations

  1. Institute of Technical Physics, Czechosl. Acad. Sci., Prague

    Jaromír Brož, Svatopluk Krupička & Bohumil Zítka

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  1. Jaromír Brož
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  2. Svatopluk Krupička
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  3. Bohumil Zítka
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Brož, J., Krupička, S. & Zítka, B. The perminvar effect and magnetic after-effect in magnesium manganese ferrite. Czech J Phys 9, 314–323 (1959). https://doi.org/10.1007/BF01557189

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  • DOI: https://doi.org/10.1007/BF01557189

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