39 citations · 135 across the 10 of their papers we have counts for
11 papers
Quasicrystalline oxide interfaces by twisting SrTiO3 membranes
Shivasheesh Varshney, Sooho Choo, Huan Liu +34
Quasicrystals reveal that long-range order can exist without translational periodicity, but deterministic routes for designing strongly bonded quasicrystalline interfaces remain un…
Coils in thermomagnetic harvesters -- a comparative study
Aske Chris Nilsson, Andrea Roberto Insinga, Salvatore De Angelis +2
Thermomagnetic generators (TMGs) are devices that convert waste heat to electricity through a change in magnetization of a solid material. This causes a changing flux through a coi…
Exact demagnetisation field for periodic one-dimensional array of rectangular prisms
Frederik Laust Durhuus, Andrea Roberto Insinga, Rasmus Bjørk
The magnetic field from a uniformly magnetised, rectangular prism is known exactly, which is the basis for a large number of micromagnetic simulations. Here we derive an analytical…
Including sample shape in micromagnetics with 3D periodic boundary conditions
Frederik Laust Durhuus, Andrea Roberto Insinga, Rasmus Bjørk
Periodic boundary conditions (PBCs) for computing magnetic fields in repeating magnetic structures, e.g. in micromagnetic simulations, are typically imposed using the quasi periodi…
Designing dislocation-driven polar vortex networks in twisted perovskites
William Sandholt, Nicolas Gauquelin, John Mangeri +21
Twisting two atomic layers produces a geometric moire pattern, but bonding-induced interfacial reconstruction fundamentally transforms this into an ordered dislocation network - a…
Instability-driven mechanically locked states in functional oxide membranes
Varun Harbola, Thomas Emil le Cozannet, Denis Alikin +10
Mechanical instabilities in thin solids offer a powerful route to engineer nonlinear responses, yet their controlled use in functional crystalline oxides has remained largely unexp…
MagTense: a micromagnetic framework using the analytical demagnetization tensor
R. Bjørk, E. B. Poulsen, K. K. Nielsen +1
We present the open source micromagnetic framework, MagTense, which utilizes a novel discretization approach of rectangular cuboid or tetrahedron geometry "tiles" to analytically c…
The stray- and demagnetizing field from a homogeneously magnetized tetrahedron
Kaspar K. Nielsen, Andrea R. Insinga, Rasmus Bjørk
The stray- and demagnetization tensor field for a homogeneously magnetized tetrahedron is found analytically. The tetrahedron is a special case of four triangular faces with consta…
A topology optimized switchable permanent magnet system
R. Bjørk, A. R. Insinga
The design of a magnetic field source that can switch from a high field to a low field configuration by rotation by of a set of iron pieces is investigated using topolog…
Quantum heat engines: limit cycles and exceptional points
Andrea Insinga, Bjarne Andresen, Peter Salamon +1
We show that the inability of a quantum Otto cycle to reach a limit cycle is connected with the propagator of the cycle being non-compact. For a working fluid consisting of quantum…
Topology optimized permanent magnet systems
R. Bjørk, C. R. H. Bahl, A. R. Insinga
Topology optimization of permanent magnet systems consisting of permanent magnets, high permeability iron and air is presented. An implementation of topology optimization for magne…