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Misorientation angle dependence of bicrystal magnetoresistance within the model of coherent rotation
Chalmers tekniska högskola, Institutionen för mikroteknologi och nanovetenskap.
Chalmers tekniska högskola, Institutionen för tillämpad fysik.
2004 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 16, no 21, p. 3761-3768Article in journal (Refereed) Published
Abstract [en]

Bicrystal magnetoresistance hysteresis is studied within the model of coherent rotation of magnetization. The magnetoresistance hysteresis is calculated numerically in the limit of fully spin polarized current for symmetric bicrystal junctions with biaxial magnetic anisotropy and of varying misorientation angles. The shape of the curves obtained from the model displays different characteristic features, depending on the angular relationships, which are consistent with experimental data from the literature. The results show a magnetoresistance increasing with increasing misorientation angle. The influence of biaxial magnetocrystalline anisotropy is reflected in a hump in the maximum magnetoresistance curve at around a misorientation angle of 25°. This structure is absent in the case of uniaxial anisotropy.

Place, publisher, year, edition, pages
2004. Vol. 16, no 21, p. 3761-3768
National Category
Condensed Matter Physics
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URN: urn:nbn:se:hj:diva-10453DOI: 10.1088/0953-8984/16/21/024OAI: oai:DiVA.org:hj-10453DiVA, id: diva2:240601
Available from: 2009-09-29 Created: 2009-09-29 Last updated: 2017-12-13Bibliographically approved

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Gunnarsson, Robert

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