Aufgrund von Vorbereitungen auf eine neue Version von KOPS, können kommenden Montag und Dienstag keine Publikationen eingereicht werden. (Due to preparations for a new version of KOPS, no publications can be submitted next Monday and Tuesday.)
Type of Publication: | Journal article |
URI (citable link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-119172 |
Author: | Moser, Judith; Kunej, Vojko; Pernau, Hans-Fridtjof; Scheer, Elke; Albrecht, Manfred |
Year of publication: | 2010 |
Published in: | Journal of Applied Physics ; 107 (2010), 9. - 09C506 |
DOI (citable link): | https://dx.doi.org/10.1063/1.3350909 |
Summary: |
The deposition of Co/Pd multilayers onto self-assembled spherical particles provides a system with unique magnetic properties. The magnetic caps have high perpendicular magnetic anisotropy, are single-domain, and strongly exchange decoupled, but in electrical contact with each other, thus enabling magnetotransport measurements. By applying an external magnetic field, the caps can be switched individually. We systematically studied the magnetoresistance on a two-dimensional cap array consisting of Co/Pd multilayers deposited on particles with a diameter of 200 nm. In the vicinity of the coercive field, a hysteretic resistance peak occurs. It can be explained with the random magnetization configuration of the magnetic caps leading to an increased spin-dependent scattering of the conduction electrons. The underlying mechanism might be comparable to the one causing giant magnetoresistance in granular alloys. For temperatures above 77 K, additional resistivity contributions with high saturation fields are observed, which are tentatively explained by the decreasing size of magnetically ordered parts of the caps with increasing temperature, resulting finally in superparamagnetic behavior in the contact area between neighboring caps.
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Subject (DDC): | 530 Physics |
Keywords: | multilayers |
Link to License: | Attribution-NonCommercial-NoDerivs 2.0 Generic |
Bibliography of Konstanz: | Yes |
MOSER, Judith, Vojko KUNEJ, Hans-Fridtjof PERNAU, Elke SCHEER, Manfred ALBRECHT, 2010. Magnetoresistive effects in Co/Pd multilayers on self-assembled nanoparticles (invited). In: Journal of Applied Physics. 107(9), 09C506. Available under: doi: 10.1063/1.3350909
@article{Moser2010Magne-4746, title={Magnetoresistive effects in Co/Pd multilayers on self-assembled nanoparticles (invited)}, year={2010}, doi={10.1063/1.3350909}, number={9}, volume={107}, journal={Journal of Applied Physics}, author={Moser, Judith and Kunej, Vojko and Pernau, Hans-Fridtjof and Scheer, Elke and Albrecht, Manfred}, note={Article Number: 09C506} }
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Scheer_JAP_2010_2.pdf | 631 |