Two different coercivity lattices in Co/Pd multilayers generated by single-pulse direct laser interference lithography

Leufke, Philipp M.; Riedel, Stephen; Lee, Min-Sang; Li, Jie; Rohrmann, H.; Eimüller, T.; Leiderer, Paul; Boneberg, Johannes; Schätz, G.; Albrecht, Manfred

doi:10.1063/1.3126714

Cited by 14 publications

(14 citation statements)

References 43 publications

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“…For instance, temperature increases induced by laser beams can modify the equilibrium conditions and start a magnetization precession, switch it between different easy axis minima [6,7], or modify the magnetization hysteresis loops in applied fields [8]. Magnetic structures induced by laser beams [9,10,11,12,13], all-optical switching (AOS) in thin ferrimagnetic rare-earth and ferromagnetic superlattices [14,15], hybrid structures [16] and granular media [17,18] have been observed. Local ultrafast [8,19] as well as thermal models of AOS [20,21,22,23,24] have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Heat diffusion in magnetic superlattices on glass substrates

Hoveyda

Adnani

Smadici

2017

Journal of Applied Physics

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Pump-probe experiments and polarizing microscopy are applied to examine temperature and heat flow in metallic magnetic superlattices on glass substrates. A model of heat diffusion in thin layers for cylindrical symmetry, equivalent to the Green's function method, gives a good description of the results. The frequency dependence of temperature modulation shows that a glass layer should be added to the sample structure. The demagnetization patterns are reproduced with a Green's function that includes an interface conductance.Comment: 9 pages, 7 figure

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Section: Introductionmentioning

confidence: 99%

Heat diffusion in magnetic superlattices on glass substrates

Hoveyda

Adnani

Smadici

2017

Journal of Applied Physics

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“…Others have employed interference lithography in the fabrication of cobalt magnetic arrays for use in magnetic random access memory devices as depicted in Figure 13(b) [260]. Most recently, MBIL was used to create magnetic patterns in Co/Pd multilayer systems with favorable magnetic properties as depicted in Figure 13(c) [261]. …”

Section: Magnetic Nanostructuresmentioning

confidence: 99%

Multi-Beam Interference Advances and Applications: Nano-Electronics, Photonic Crystals, Metamaterials, Subwavelength Structures, Optical Trapping, and Biomedical Structures

Burrow

Gaylord

2011

Micromachines

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Abstract:Research in recent years has greatly advanced the understanding and capabilities of multi-beam interference (MBI). With this technology it is now possible to generate a wide range of one-, two-, and three-dimensional periodic optical-intensity distributions at the micro-and nano-scale over a large length/area/volume. These patterns may be used directly or recorded in photo-sensitive materials using multi-beam interference lithography (MBIL) to accomplish subwavelength patterning. Advances in MBI and MBIL and a very wide range of applications areas including nano-electronics, photonic crystals, metamaterials, subwavelength structures, optical trapping, and biomedical structures are reviewed and put into a unified perspective.

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“…This technique is suitable to pattern elemental semiconductors and compounds whose crystal structures are retained in the fast laser heating/cooling process, but its application to complex multi‐element materials has not been explored. As a related approach, laser interference irradiation (LII) was used to fabricate periodic structures in metal‐based thin films and multilayers . The mechanism of patterning is quite straightforward: the laser beams causes annealing or chemical intermixing mostly in one‐dimensional areas of light intensity maxima as a result of interference .…”

Section: Introductionmentioning

confidence: 99%

Anisotropic Imprint of Amorphization and Phase Separation in Manganite Thin Films via Laser Interference Irradiation

Ding

Lin

et al. 2014

Small

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Materials with mesoscopic structural and electronic phase separation, either inherent from synthesis or created via external means, are known to exhibit functionalities absent in the homogeneous counterparts. One of the most notable examples is the colossal magnetoresistance discovered in mixed-valence manganites, where the coexistence of nano- to micrometer-sized phase-separated domains dictates the magnetotransport. However, it remains challenging to pattern and process such materials into predesigned structures and devices. In this work, a direct laser interference irradiation (LII) method is employed to produce periodic stripes in thin films of a prototypical phase-separated manganite Pr0.65 (Ca0.75 Sr0.25 )0.35 MnO3 (PCSMO). LII induces selective structural amorphization within the crystalline PCSMO matrix, forming arrays with dimensions commensurate with the laser wavelength. Furthermore, because the length scale of LII modification is compatible to that of phase separation in PCSMO, three orders of magnitude of increase in magnetoresistance and significant in-plane transport anisotropy are observed in treated PCSMO thin films. Our results show that LII is a rapid, cost-effective and contamination-free technique to tailor and improve the physical properties of manganite thin films, and it is promising to be generalized to other functional materials.

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Two different coercivity lattices in Co/Pd multilayers generated by single-pulse direct laser interference lithography

Cited by 14 publications

References 43 publications

Heat diffusion in magnetic superlattices on glass substrates

Heat diffusion in magnetic superlattices on glass substrates

Multi-Beam Interference Advances and Applications: Nano-Electronics, Photonic Crystals, Metamaterials, Subwavelength Structures, Optical Trapping, and Biomedical Structures

Anisotropic Imprint of Amorphization and Phase Separation in Manganite Thin Films via Laser Interference Irradiation

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