Magnetoresistance of Fe3O4/Au/Fe3O4 and Fe3O4/Au/Fe spin-valve structures

Autor:	Sebastiaan van Dijken, K. Nakajima, Steven M. Watts, Xavier Faïn, J. M. D. Coey
Rok vydání:	2004
Předmět:	Magnetization Materials science Condensed matter physics Transition metal Magnetoresistance Scattering Spin valve Giant magnetoresistance Electron Condensed Matter Physics Spin (physics) Electronic Optical and Magnetic Materials
Zdroj:	Journal of Magnetism and Magnetic Materials. 280:322-326
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2004.03.030
Popis:	A detailed study of the in-plane magnetotransport properties of spin valves with one and two Fe 3 O 4 electrodes is presented. Fe 3 O 4 /Au/Fe 3 O 4 spin valves exhibit a clear anisotropic magnetoresistance in small magnetic fields but no giant magnetoresistance (GMR). The absence of GMR in these structures is due to simultaneous magnetization reversal in the two Fe 3 O 4 layers. By contrast, a negative GMR effect is measured on Fe 3 O 4 /Au/Fe spin valves. The negative GMR is attributed to an electron spin scattering asymmetry at the Fe 3 O 4 /Au interface or an induced spin scattering asymmetry in the Au interfacial layers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::20863326145f043423c71387d686fdbf https://doi.org/10.1016/j.jmmm.2004.03.030 Zobrazit plný text záznamu Full Text from ScienceDirect