Aladin Ullrich
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View article: Phase Control of Single-Crystalline Cobalt Oxide Thin Films Grown by Pulsed Laser Deposition
Phase Control of Single-Crystalline Cobalt Oxide Thin Films Grown by Pulsed Laser Deposition Open
View article: Optimizing Carrier Balance in CsPbBr<sub>3</sub> Nanocrystal LEDs: The Role of Alkyl Ligands and Polar Electron Transport Layers
Optimizing Carrier Balance in CsPbBr<sub>3</sub> Nanocrystal LEDs: The Role of Alkyl Ligands and Polar Electron Transport Layers Open
The study of lead halide perovskite nanocrystal based light‐emitting diodes (LEDs) has advanced significantly, with notable improvements in stability and optical properties. However, optimizing charge carrier injection and transport remain…
View article: Laser-generated Pt/Ni nanocatalysts-carbon nanofibers enabling self-calibrated enzyme-free glucose detection at physiological pH
Laser-generated Pt/Ni nanocatalysts-carbon nanofibers enabling self-calibrated enzyme-free glucose detection at physiological pH Open
View article: Dipolar skyrmions and antiskyrmions of arbitrary topological charge at room temperature
Dipolar skyrmions and antiskyrmions of arbitrary topological charge at room temperature Open
Magnetic skyrmions are localized, stable topological magnetic textures that can move and interact with each other like ordinary particles when an external stimulus is applied. The efficient control of the motion of spin textures using spin…
View article: Temperature Evolution of Magnon Propagation Length in Tm$_3$Fe$_5$O$_{12}$ Thin Films: Roles of Magnetic Anisotropy and Gilbert Damping
Temperature Evolution of Magnon Propagation Length in Tm$_3$Fe$_5$O$_{12}$ Thin Films: Roles of Magnetic Anisotropy and Gilbert Damping Open
The magnon propagation length ($\langleξ\rangle$) of a ferro/ferrimagnet (FM) is one of the key factors that controls the generation and propagation of thermally-driven spin current in FM/heavy metal (HM) bilayer based spincaloritronic dev…
View article: Phase Composition of Iron Oxide Nanoparticles Studied Using Hard X-ray Absorption Spectroscopy
Phase Composition of Iron Oxide Nanoparticles Studied Using Hard X-ray Absorption Spectroscopy Open
At the surface of iron oxide nanoparticles, an oxidized or disordered layer is often found. Due to the large surface-to-volume ratio of nanomaterials, such a surface layer plays an important role in the overall magnetic properties of the p…
View article: Experimental demonstration of a skyrmion-enhanced strain-mediated physical reservoir computing system
Experimental demonstration of a skyrmion-enhanced strain-mediated physical reservoir computing system Open
Physical reservoirs holding intrinsic nonlinearity, high dimensionality, and memory effects have attracted considerable interest regarding solving complex tasks efficiently. Particularly, spintronic and strain-mediated electronic physical …
View article: Reduced thermal expansion by surface-mounted nanoparticles in a pillared-layered metal-organic framework
Reduced thermal expansion by surface-mounted nanoparticles in a pillared-layered metal-organic framework Open
View article: Thin-Film Heterostructures Based on Co/Ni Synthetic Antiferromagnets on Polymer Tapes: Toward Sustainable Flexible Spintronics
Thin-Film Heterostructures Based on Co/Ni Synthetic Antiferromagnets on Polymer Tapes: Toward Sustainable Flexible Spintronics Open
Synthetic antiferromagnets with perpendicular magnetic anisotropy (PMA-SAFs) have gained growing attention for both conventional and next-generation spin-based technologies. While the progress of PMA-SAF spintronic devices on rigid substra…
View article: Synthesis of iron oxide nanoparticles by decomposition of iron-oleate: influence of the heating rate on the particle size
Synthesis of iron oxide nanoparticles by decomposition of iron-oleate: influence of the heating rate on the particle size Open
Nanoparticles from transition metal oxides can be synthesized in various ways. A common synthesis route uses metal-oleate complex precursors that can be thermally decomposed, leading to crystalline metal-oxide nanoparticles with a narrow s…
View article: Phase composition and magnetic properties of post-annealed asymmetric Pt/Fe/Pt/Au/Fe thin films
Phase composition and magnetic properties of post-annealed asymmetric Pt/Fe/Pt/Au/Fe thin films Open
Intermetallic compound formation realized via thermally-induced diffusion intermixing of layered stacks is a prospective route for the formation of thin films with properties promising for practical applications. This can be further promot…
View article: Control of Stripe-Domain-Wall Magnetization in Multilayers Featuring Perpendicular Magnetic Anisotropy
Control of Stripe-Domain-Wall Magnetization in Multilayers Featuring Perpendicular Magnetic Anisotropy Open
We report on the controlled switching of domain wall (DW) magnetization in\naligned stripe domain structures, stabilized in [Co (0.44 nm)/Pt (0.7 nm)]$_X$\n($X = 48$, 100, 150) multilayers with perpendicular magnetic anisotropy. The\nswitc…
View article: Structure and magnetic properties of ferrimagnetic [Gd/Fe]<i>n</i> multilayer and Gd<i>x</i>Fe100−<i>x</i> thin films
Structure and magnetic properties of ferrimagnetic [Gd/Fe]<i>n</i> multilayer and Gd<i>x</i>Fe100−<i>x</i> thin films Open
The structural and magnetic properties of two series of [Gd(2, 4 nm)/Fe(t)]n multilayer films with varying Fe thickness were investigated and compared to those of amorphous ferrimagnetic GdFe alloys of the same corresponding composition. T…
View article: Enhanced annealing stability of ferrimagnetic Tb/FeCo multilayers
Enhanced annealing stability of ferrimagnetic Tb/FeCo multilayers Open
In this study, we have investigated amorphous 20-nm-thick Tb/Fe80Co20 multilayer samples with different individual layer thicknesses and their corresponding alloy counterpart. In particular, the structural and magnetic properties were anal…
View article: Coupled Organic–Inorganic Nanostructures with Mixed Organic Linker Molecules
Coupled Organic–Inorganic Nanostructures with Mixed Organic Linker Molecules Open
The electronic properties of semiconducting inorganic lead sulfide (PbS) nanocrystals (NCs) and organic linker molecules are dependent on the size of NCs as well as the used ligands. Here, we demonstrate that a weakly binding ligand can be…
View article: Tuning the Properties of MOF‐808 via Defect Engineering and Metal Nanoparticle Encapsulation
Tuning the Properties of MOF‐808 via Defect Engineering and Metal Nanoparticle Encapsulation Open
Defect engineering and metal encapsulation are considered as valuable approaches to fine‐tune the reactivity of metal–organic frameworks. In this work, various MOF‐808 (Zr) samples are synthesized and characterized with the final aim to un…
View article: In Vitro Studies of Fe<sub>3</sub>O<sub>4</sub>‐ZIF‐8 Core–Shell Nanoparticles Designed as Potential Theragnostics
In Vitro Studies of Fe<sub>3</sub>O<sub>4</sub>‐ZIF‐8 Core–Shell Nanoparticles Designed as Potential Theragnostics Open
Theragnostics represent a combination of therapy and diagnosis within one system. Herein, Fe 3 O 4 ‐ZIF‐8 core–shell nanoparticles are developed and suggested as candidates for theragnostic applications in cancer treatment. A drug loaded m…
View article: Synthesis and high-resolution structural and chemical analysis of iron-manganese-oxide core-shell nanocubes
Synthesis and high-resolution structural and chemical analysis of iron-manganese-oxide core-shell nanocubes Open
View article: Single crystals of Metal-Organic Framework Ulm-4 grown selectively on a micro-structured plasma polymer coating
Single crystals of Metal-Organic Framework Ulm-4 grown selectively on a micro-structured plasma polymer coating Open
View article: Magnetic properties and structure of Gd-implanted <b> <i>L</i>1</b> FePt thin films
Magnetic properties and structure of Gd-implanted <b> <i>L</i>1</b> FePt thin films Open
In this study, we have investigated the effect of Gd implantation on composition, chemical order, and magnetic properties of 20 nm thick L10 ordered FePt thin films. We show that upon Gd implantation at 30 keV even a small amount of 1 at. …
View article: Full-switching FSF-type superconducting spin-triplet magnetic random access memory element
Full-switching FSF-type superconducting spin-triplet magnetic random access memory element Open
In the present work a superconducting Co/${\mathrm{CoO}}_{x}$/${\text{Cu}}_{41}{\text{Ni}}_{59}$/Nb/${\text{Cu}}_{41}{\text{Ni}}_{59}$ nanoscale thin film heterostructure is investigated, which exhibits a superconducting transition tempera…
View article: Observation of an fcc–Co nanolayer grown between CoO and amorphous Si
Observation of an fcc–Co nanolayer grown between CoO and amorphous Si Open
The thermodynamically crystallographic phase of Co at ambient conditions is hexagonal-close-packed. However, it has been found that given a crystallographic support from a suitable substrate, the high-temperature face-centered-cubic phase …
View article: Recovery of Zn from wastewater of zinc plating industry by precipitation of doped ZnO nanoparticles
Recovery of Zn from wastewater of zinc plating industry by precipitation of doped ZnO nanoparticles Open
View article: Thickness dependence of the triplet spin-valve effect in superconductor–ferromagnet–ferromagnet heterostructures
Thickness dependence of the triplet spin-valve effect in superconductor–ferromagnet–ferromagnet heterostructures Open
Background: In nanoscale layered S/F 1 /N/F 2 /AF heterostructures, the generation of a long-range, odd-in-frequency spin-projection one triplet component of superconductivity, arising at non-collinear alignment of the magnetizations of F …
View article: Influence of the FFLO-like state on the upper critical field of a superconductor/ferromagnet bilayer: Angular and temperature dependence
Influence of the FFLO-like state on the upper critical field of a superconductor/ferromagnet bilayer: Angular and temperature dependence Open
We investigated the upper critical magnetic field, $H_{c}$, of a superconductor-ferromagnet (S/F) bilayer of Nb/Cu$_{41}$Ni$_{59}$ and a Nb film (as reference). We obtained the dependence of $H_{c\perp}$ and $H_{c\parallel}$ (perpendicular…