117 citations · 615 across the 26 of their papers we have counts for
26 papers
Microstructure of a spark-plasma-sintered Fe2VAl-type Heusler alloy for thermoelectric application
Leonie Gomell, Imants Dirba, Hanna Bishara +8
The influence of microstructure on thermoelectricity is increasingly recognized. Approaches for microstructural engineering can hence be exploited to enhance thermoelectric perform…
Influence of amorphous phase on coercivity in SmCo5-Cu nanocomposites
Franziska Staab, Yangyiwei Yang, Eren Foya +10
Severe plastic deformation of powder blends consisting of SmCo5-Cu results in magnetically hardened nanocomposite bulk materials. The microstructure is continuously refined with in…
Laser Powder Bed Fusion of anisotropic Nd-Fe-B bonded magnets utilizing an in situ mechanical alignment approach
Kilian Schäfer, Rafael Gitti Tortoretto Fim, Fernando Maccari +9
Nd-Fe-B bonded magnets are an important class of permanent magnets, employed in many technological sectors. The Additive Manufacturing (AM) processes enables the fabrication of net…
Magnetic properties of Nd6Fe13Cu single crystals
Jianing Liu, Ruiwen Xie, Alex Aubert +4
The understanding of coercivity mechanism in high performance Nd-Fe-B permanent magnets relies on the analysis of the magnetic properties of all phases present in the magnets. By a…
Reactive single-step hot-pressing and magnetocaloric performance of polycrystalline FeAlBGeGa () MAB phases
Benedikt Beckmann, Tarek A. El-Melegy, David Koch +7
Reactive single-step hot-pressing at 1473 K and 35 MPa for 4 h produces dense, bulk, near single-phase, low-cost and low-criticality FeAlB and FeAlB$_2…
The Premartensite and Martensite in Fe50Rh50 System
Esmaeil Adabifiroozjaei, Fernando Maccari, Lukas Schaefer +19
Metallic/intermetalic materials with BCC structures hold an intrinsic instability due to phonon softening along [110] dirrection, causing BCC to lower-symmetry phases transformatio…
Magneto-active composites with locally tailored stiffness produced by laser powder bed fusion
Kilian Schäfer, Matthias Lutzi, Muhammad Bilal Khan +11
Additive manufacturing technologies enable the production of complex and bioinspired shapes using magneto-responsive materials, which find diverse applications in soft robotics. Pa…
Local magnetic and geometric structure in Mn-doped La(Fe,Si)13
Benedikt Eggert, Johanna Lill, Damian Günzing +11
Magnetic cooling has the potential to replace conventional gas compression refrigeration. Materials such as La(Fe,Si) exhibit a sizeable first-order magnetocaloric effect, a…
Identifying grain boundary and intragranular pinning centres in Sm2(Co,Fe,Cu,Zr)17 permanent magnets to guide performance optimisation
Stefan Giron, Nikita Polin, Esmaeil Adabifiroozjaei +21
Permanent magnets draw their properties from a complex interplay of chemical composition and phase, each with their associated intrinsic magnetic properties. Gaining an understandi…
A multi-stage, first-order phase transition in LaFe11.8Si1.2: interplay between the structural, magnetic and electronic degrees of freedom
K. P. Skokov, A. Y. Karpenkov, D. Y. Karpenkov +11
Alloys with a first-order magnetic transition are central to solid-state refrigeration technology, sensors and actuators, or spintronic devices. The discontinuous nature of the tra…
Influence of Gd-rich precipitates on the martensitic transformation, magnetocaloric effect and mechanical properties of Ni-Mn-In Heusler alloys -- A comparative study
Franziska Scheibel, Wei Liu, Lukas Pfeuffer +6
A multi-stimuli cooling cycle can be used to increase the cyclic caloric performance of multicaloric materials like Ni-Mn-In Heusler alloys. However, the use of a uniaxial compress…
Dissipation losses limiting first-order phase transition materials in cryogenic caloric cooling: A case study on all-d-metal Ni(-Co)-Mn-Ti Heusler alloys
Benedikt Beckmann, David Koch, Lukas Pfeuffer +11
Ni-Mn-based Heusler alloys, in particular all-d-metal Ni(-Co)-Mn-Ti, are highly promising materials for energy-efficient solid-state refrigeration as large multicaloric effects can…
Designing magnetocaloric materials for hydrogen liquefaction with light rare-earth Laves phases
Wei Liu, Tino Gottschall, Franziska Scheibel +6
Magnetocaloric hydrogen liquefaction could be a "game-changer" for liquid hydrogen industry. Although heavy rare-earth-based magnetocaloric materials show strong magnetocaloric eff…
Ce and Dy substitutions in NdFeB: site-specific magnetic anisotropy from first-principles
James Boust, Alex Aubert, Bahar Fayyazi +4
A first-principles approach combining density functional and dynamical mean-field theories in conjunction with a quasi-atomic approximation for the strongly localized 4 shell is…
A study on rare-earth Laves phases for magnetocaloric liquefaction of hydrogen
Wei Liu, Eduard Bykov, Sergey Taskaev +10
We are witnessing a great transition towards a society powered by renewable energies to meet the ever-stringent climate target. Hydrogen, as an energy carrier, will play a key role…
Influence of microstructure on the application of Ni-Mn-In Heusler compounds for multicaloric cooling using magnetic field and uniaxial stress
Lukas Pfeuffer, Adrià Gràcia-Condal, Tino Gottschall +12
Novel multicaloric cooling utilizing the giant caloric response of Ni-Mn-based metamagnetic shape-memory alloys to different external stimuli such as magnetic field, uniaxial stres…
Microstructure engineering of metamagnetic Ni-Mn-based Heusler compounds by Fe-doping: A roadmap towards excellent cyclic stability combined with large elastocaloric and magnetocaloric effects
Lukas Pfeuffer, Jonas Lemke, Navid Shayanfar +9
Ni-Mn-based metamagnetic shape-memory alloys exhibit a giant thermal response to magnetic fields and uniaxial stress which can be utilized in single caloric or multicaloric cooling…
Magneto-electric Tuning of Pinning-Type Permanent Magnets through Atomic-Scale Engineering of Grain Boundaries
Xinglong Ye, Fengkai Yan, Lukas Schaefer +11
Pinning-type magnets maintaining high coercivity, i.e. the ability to sustain magnetization, at high temperature are at the core of thriving clean-energy technologies. Among these,…
Influence of the martensitic transformation kinetics on the magnetocaloric effect in Ni-Mn-In
L. Pfeuffer, T. Gottschall, T. Faske +6
The inverse magnetocaloric effect (MCE) in Ni-Mn-based Heusler compounds occurs during the magnetostructural transition between low-temperature, low-magnetization martensite and hi…
Tailoring magnetocaloric effect in all-d-metal Ni-Co-Mn-Ti Heusler alloys: a combined experimental and theoretical study
Andreas Taubel, Benedikt Beckmann, Lukas Pfeuffer +7
Novel Ni-Co-Mn-Ti all-d-metal Heusler alloys are exciting due to large multicaloric effects combined with enhanced mechanical properties. An optimized heat treatment for a series o…
Intrinsically weak magnetic anisotropy of cerium in potential hard-magnetic intermetallics
Anna Galler, Semih Ener, Fernando Maccari +5
Cerium-based intermetallics are currently attracting much interest as a possible alternative to existing high-performance magnets containing scarce heavy rare-earth elements. Howev…
Influence of hydrogenation on the vibrational density of states of magnetocaloric
Alexandra Terwey, Markus E. Gruner, Werner Keune +14
We report on the impact of magnetoelastic coupling on the magnetocaloric properties of LaFeSiH in terms of the vibrational density of states, which we dete…
Dynamics of the magnetoelastic phase transition and adiabatic temperature change in Mn1.3Fe0.7P0.5Si0.55
M. Fries, T. Gottschall, F. Scheibel +7
The adiabatic temperature change DTad of a Mn1.3Fe0.7P0.5Si0.55 Fe2P-type alloy was measured under different magnetic field-sweep rates from 0.93 Ts-1 to 2870 Ts-1. We find a field…
Pele's hairs and exotic multiply twinned graphite closed-shell microcrystals in meteoritic dust of Chelyabinsk superbolide
S. Taskaev, K. Skokov, V. Khovaylo +10
When a space body enters Earth's atmosphere, its surface is exposed to high pressure and temperatures. The airflow tears off small droplets from the meteoroid forming a cloud of me…