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Studia Geophysica et Geodaetica

, Volume 29, Issue 4, pp 351–361 | Cite as

Magnetic anisotropy of polycrystalline haematite induced by A D. C. magnetic field

  • Karel Zapletal
  • V. Kropáček
Article

Summary

The changes in the anisotropy of initial susceptibility of haematite ores, induced by a D.C. magnetic field are studied. After applying stronger magnetic fields, the changes in the anisotropy parameters are considerable and depend on the manner in which the basal planes of the haematite grains are arranged in the samples. The experimental results are interpreted on the basis of the single-domain theory. The proposed simple model of induced anisotropy is based on the relation between the directional susceptibility of the sample and the preferred orientation of the magnetic moments of the grains in polycrystalline haematite.

Keywords

Magnetic Field Anisotropy Simple Model Haematite Structural Geology 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Резюме

Изучaюmся uзмененuя aнuзоmроnuu нaчaльноŭ восnрuuмчuвосmu
емamumовых ру¶rt;, вызвaнные nосmоянным мa
нumным nолем. После nрuмененuя более сuльных мa
нumных nолеŭ uзмененuя aнuзоmроnuu зaмечamельные u зaвuсяm оm сnособa уnоря¶rt;оченuя основных nлоскосmеŭ
емamumовых зерен в обрaзцaх. Эксnерuменmaльные. ¶rt;aнные uнmерnреmuровaны с uсnользовaнuем о¶rt;но¶rt;оменноŭ mеорuu. Пре¶rt;ложеннaя nросmaя мо¶rt;ель выэвaнноŭ aнuзоmроnuu основaнa нa зaвuсuмосmu uзмеренноŭ восnрuuмчuвосmu оm орuенmaцuu мa
нumных моменmов зерен в nолuкрuсmaллuческом
емamumе.

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Copyright information

© ACADEMIA, Publishing House of the Czechoslovak Academy of Sciences 1985

Authors and Affiliations

  • Karel Zapletal
    • 1
  • V. Kropáček
  1. 1.Geofyzika, N. C., Company Research InstituteBrno

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