A Closer Look Into Magnetism: Opportunities With Synchrotron Radiation

Dürr, H. A.; Eimüller, T.; Elmers, H. J.; Eisebitt, Stefan; Farle, Michael; Kuch, W.; Matthes, Frank; Martins, M.; Mertins, H.-Ch.; Oppeneer, Peter M.; Pluciński, Ł.; Schneider, Claus M.; Wende, Heiko; Würth, W.; Zabel, H.

doi:10.1109/tmag.2008.2006667

Cited by 70 publications

(44 citation statements)

References 340 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…XMCD was measured in a transmission geometry 38,39 at BESSY II using the ALICE diffractometer 40 installed at the PM3 bending magnet beamline. The study of the DyCo 5 layer in high fields was performed with the high-field endstation at the beamline UE46-PGM1 installed at the electron storage ring BESSY II.…”

Section: Methodsmentioning

confidence: 99%

Perpendicular exchange bias in ferrimagnetic spin valves

et al. 2012

View full text Add to dashboard Cite

The exchange bias effect refers to the shift of the hysteresis loop of a ferromagnet in direct contact to an antiferromagnet. For applications in spintronics a robust and tunable exchange bias is required. Here we show experimental evidence for a perpendicular exchange bias in a prototypical ferrimagnetic spin valve consisting of DyCo 5 /Ta/Fe 76 Gd 24 , where the DyCo 5 alloy has the role of a hard ferrimagnet and Fe 76 Gd 24 is a soft ferrimagnet. Taking advantage of the tunability of the exchange coupling between the ferrimagnetic layers by means of thickness variation of an interlayer spacer, we demonstrate that perpendicular unidirectional anisotropy can be induced with desirable absolute values at room temperature, without making use of a field-cooling procedure. moreover, the shift of the hysteresis loop can be reversed with relatively low magnetic fields of several hundred oersteds. This flexibility in controlling a robust perpendicular exchange bias at room temperature may be of crucial importance for applications.

show abstract

Section: Methodsmentioning

confidence: 99%

Perpendicular exchange bias in ferrimagnetic spin valves

et al. 2012

View full text Add to dashboard Cite

show abstract

“…However, in the case of multisublattice magnets or magnetic multilayers, the dynamics of the individual sublattices or layers cannot be disentangled, and the measured magneto-optical response is in general an average over all sublattices and/or layers. Therefore, it is no surprise that the study of ultrafast magnetization dynamics received a huge boost by the advent of fs x-ray pulses [15][16][17]. The main advantage of using x rays instead of MOKE is their element specificity; by tuning the x-ray energy to the absorption edge of an element, * b.koopmans@tue.nl only the dynamics of that specific element are measured.…”

mentioning

confidence: 99%

Exploring laser-induced interlayer spin transfer by an all-optical method

et al. 2014

View full text Add to dashboard Cite

“…6 (black solid squares). We first notice that the asymmetry at the Co L 3 and L 2 edges are equivalent to the respective XMCD signals of Co. 29,36 The asymmetry of Cr is much weaker than for Co, but still clearly visible at the Cr L 3 edge, whereas it is barely noticeable and within the noise level at the Cr L 2 edge. More important is the fact that the asymmetries of Co and Cr have opposite sign.…”

Section: Magnetic Polarization Of Crmentioning

confidence: 86%

“…[29][30][31][32][33] This method is interface sensitive and allows us to analyze element selectively the magnetic properties of heterostructures, such as the magnetization profile across interfaces and the polarization at interfaces. [32][33][34] For the more general magnetic properties of the trilayer including magnetic hysteresis measurements we refer to our earlier study reported in Ref.…”

Section: Magnetic Polarization Of Crmentioning

confidence: 99%

Direct observation of Cr spin polarization in epitaxial Cr/Co/Cr(100) trilayers

et al. 2013

View full text Add to dashboard Cite

The spin polarization of chromium at the interface next to a ferromagnetic layer is of general interest because of the competing ferromagnetic and antiferromagnetic exchange coupling. While the Fe/Cr interface has been well studied, information on the Co/Cr interface still remains scarce. Here we show for epitaxially grown Cr/Co/Cr(100) trilayers with smooth interfaces x-ray resonant magnetic scattering (XRMS) results in a saturation field of ±270 mT, recorded at the Co and Cr L 3 edges, respectively. The XRMS results at the Co edge show the expected asymmetry and a ferromagnetic hysteresis for different incident angles θ. Furthermore, XRMS measurements with the energy tuned to the Cr L 3 edge also exhibit an asymmetry, albeit much smaller than the one at the Co L 3 edge. Moreover, the magnetic hysteresis of Cr taken at the L 3 edge has a sign opposite to that of Co at the L 3 edge over a broad range of incident angles. From these results we infer first that at the Co/Cr interface chromium is ferromagnetically polarized, and second that its spin structure is oriented opposite to the magnetization of Co.

show abstract

A Closer Look Into Magnetism: Opportunities With Synchrotron Radiation

Cited by 70 publications

References 340 publications

Perpendicular exchange bias in ferrimagnetic spin valves

Perpendicular exchange bias in ferrimagnetic spin valves

Exploring laser-induced interlayer spin transfer by an all-optical method

Direct observation of Cr spin polarization in epitaxial Cr/Co/Cr(100) trilayers

Contact Info

Product

Resources

About