65 citations · 279 across the 11 of their papers we have counts for
11 papers
Understanding Energy Flow and Inefficiency of a Thermomagnetic Generator by Transient Multi-Physics Modelling
Ali Izadi, Bruno Neumann, Sebastian Fähler
Waste heat recovery improves energy efficiency and reduces greenhouse gas emissions; however, much industrial and environmental heat is wasted at low temperature. Thermomagnetic re…
Sub-nanosecond structural dynamics of the martensitic transformation in Ni-Mn-Ga
Yuru Ge, Fabian Ganss, Daniel Schmidt +9
Martensitic transformations drive a multitude of emerging applications, which range from high stroke actuation and, mechanocaloric refrigeration, to thermoelastic energy harvesting…
Efficient and affordable thermomagnetic materials for harvesting low grade waste heat
Daniel Dzekan, Anja Waske, Kornelius Nielsch +1
Industrial processes release substantial quantities of waste heat, which can be harvested to generate electricity. At present, the conversion of low grade waste heat to electricity…
On the origin of perpendicular magnetic anisotropy in strained Fe-Co(-X) films
Ludwig Reichel, Alexander Edström, Darius Pohl +4
Very high magnetic anisotropies have been theoretically predicted for strained Fe-Co(-X) and indeed several experiments on epitaxial thin films seemed to confirm strain induced ani…
From soft to hard magnetic Fe-Co-B by spontaneous strain: A combined first principle and thin film study
Ludwig Reichel, Ludwig Schultz, Darius Pohl +6
In order to convert the well-known Fe-Co-B alloy from a soft to a hard magnet, we propose tetragonal strain by interstitial boron. Density functional theory reveals that when B ato…
Increased magnetocrystalline anisotropy in epitaxial Fe-Co-C thin films with spontaneous strain
Ludwig Reichel, George Giannopoulos, Sandra Kauffmann-Weiss +8
Rare earth free alloys are in focus of permanent magnet research since the accessibility of the elements needed for nowadays conventional magnets is limited. Tetragonally strained…
Mesoscopic twin boundaries in epitaxial Ni-Mn-Ga films
Anja Backen, Sandra Kauffmann-Weiss, Christian Behler +6
Twin boundaries play an essential role in the use of magnetic shape memory alloy Ni-Mn-Ga as active material. Only if twin boundaries can be moved by an external magnetic field, hi…
Electric field control of magnetic exchange coupling
Karin Leistner, Juliane Wunderwald, Norman Lange +5
Electric control of magnetism is a vision which drives intense research on magnetic semiconductors and multiferroics. Recently, also ultrathin metallic films were reported to show…
Enhancing magnetocrystalline anisotropy of the Fe70Pd30 magnetic shape memory alloy by adding Cu
Sandra Kauffmann-Weiss, Sven Hamann, Markus Ernst Gruner +3
Strained epitaxial growth provides the opportunity to understand the dependence of intrinsic and extrinsic properties of functional materials at frozen intermediate stages of a pha…
Failure of the Maxwell relation for the quantification of caloric effects in ferroic materials
Robert Niemann, Oleg Heczko, Ludwig Schultz +1
Giant caloric effects were reported in elasto-, electro- and magnetocaloric materials near phase transformations. Commonly, their entropy change is indirectly evaluated by a Maxwel…
Modulated Martensite: Why it forms and why it deforms easily
Stefan Kaufmann, Robert Niemann, Thomas Thersleff +6
Diffusionless phase transitions are at the core of the multifunctionality of (magnetic) shape memory alloys, ferroelectrics and multiferroics. Giant strain effects under external f…