Accès ouvert
2012
article
OpenAlex
Gregor Nowak, K. Westerholt, H. Zabel
We studied asymmetric superconducting spin valves with the layer sequence V/Fe/V/Fe/CoO, grown on MgO(100). These thin film heterostructures exhibit a superconducting spin valve (SSV) effect, that is, a difference, Δ T s , between the superconducting transition temperatures T s with the …
de
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2012
other
OpenAlex
J. D. Burton, Evgeny Y. Tsymbal, D. Sander, Hirofumi Oka et autres
This chapter shows that the ferromagnetism in the occupied surface bands is consistent with the Stoner model for itinerant magnetism. Spin-polarized scanning tunnelling microscopy (SP-STM) is a method of choice to image and to characterize spin dependent electronic properties of nanostructures with …
us, de, es, fr, se
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Accès ouvert
2012
article
OpenAlex
Florin Radu, Radu Abrudan, Ilie Radu, Detlef Schmitz et autres
de, nl
(code pays fourni par la source)
2012
article
OpenAlex
Frank Bruessing, Boris P. Toperverg, Kirill Zhernenkov, Anton Devishvili et autres
2011
article
OpenAlex
M. Wolff, P. Gutfreund, A. Rühm, B. Akgun et autres
Author: Wolff, M. et al.; Genre: Journal Article; Issued: 2011-04-20; Keywords: MPI für Intelligente Systeme; Abt. Dosch/Rühle; ; Title: Nanoscale discontinuities at the boundary of flowing liquids: a look into structure
us, de
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Accès ouvert
2011
article
OpenAlex
M. J. Benitez, O. Petracic, Harun Tüysüz, Ferdi Schüth et autres
Antiferromagnetic (AF) nanostructures from ${\mathrm{Co}}_{3}{\mathrm{O}}_{4}$, CoO, and ${\mathrm{Cr}}_{2}{\mathrm{O}}_{3}$ were prepared by the nanocasting method and were characterized magnetometrically. The field- and temperature-dependent magnetization data suggests that the nanostructures consist of a core-shell structure. The core behaves as a regular antiferromagnet and the …
de
(code pays fourni par la source)
2010
article
OpenAlex
Philipp Szary, O. Petracic, F. Brüssing, M. Ewerlin et autres
The spin structure and magnetization reversal in Co/Al2O3/Py triple layer nanodots have been investigated both via micromagnetic simulations and experimentally by magneto-optical Kerr effect measurements. Depending on the size, isolated Py dots show either a vortex state or single domain state during …
de
(code pays fourni par la source)
2009
article
OpenAlex
Evgeny A. Kravtsov, Alexei Nefedov, Gregor Nowak, Kirill Zhernenkov et autres
We show that the magnetic state in rather thick Cr films can be finely tuned via hydrogen uptake into adjacent vanadium layers at rather low hydrogen pressures. By changing the hydrogen concentration and, hence, the electronic structure in the V layers, it …
de, se, fr, ch
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Accès ouvert
2009
article
OpenAlex
V. Baltz, A. D. Naylor, Klaus M. Seemann, W Elder et autres
Point contact Andreev reflection (PCAR) spectroscopy is a common technique for determining the spin polarization of a ferromagnetic sample. The polarization is extracted by measuring the bias dependence of the conductance of a metallic/superconducting point contact. Under ideal conditions, the conductance is …
gb, de
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Accès ouvert
2009
preprint
OpenAlex
Philipp Szary, O. Petracic, H. Zabel
The magnetization reversal and spin structure in circular Co/insulator/Ni80Fe20 trilayer dots has been investigated numerically. The effect of dipolar coupling between a soft ferromagnetic Permalloy (Py=Ni80Fe20) layer and a hard ferromagnetic Cobalt layer inside one stack is studied. We find either a …
de
(code pays fourni par la source)
2008
article
OpenAlex
Yu. I. Yanson, O. Petracic, K. Westerholt, H. Zabel
Exchange biased Fe/CoO bilayers with a Cr spacer layer between Fe and CoO layers have been studied using magnetometry. The Cr ``dusting'' layer thickness was varied between 0 and $10\text{ }\text{\AA{}}$. Independent of the growth method we find that the coercive field …
de
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2008
article
OpenAlex
Andreas Westphalen, Arndt Remhof, H. Zabel
Magnetic nanowires have been shaped in the form of spirals and arranged in different patterns. A two-dimensional periodic array of Fe spiral structures was fabricated by electron-beam lithography. The spirals had a radius of 2.8 μm, a linewidth of 100 nm, and …
de
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