31 citations · 180 across the 18 of their papers we have counts for
18 papers
A comparison of the spin-phonon behaviour of FeP-based magnetocaloric materials
Mikael S. Andersson, Simon R. Larsen, Erna K. Delczeg-Czirjak +7
Magnetic refrigeration can provide an environmentally friendly technology to reduce significantly the energy consumption of cooling devices. To retain the sustainability of the dev…
Machine Learning for Improved Density Functional Theory Thermodynamics
Sergei I. Simak, Erna K. Delczeg-Czirjak, Olle Eriksson
The predictive accuracy of density functional theory (DFT) for alloy formation enthalpies is often limited by intrinsic energy resolution errors, particularly in ternary phase stab…
How to Measure and Model Light-Induced Spin Transfer
Sinéad A. Ryan, Mohamed F. Elhanoty, Anya Grafov +13
Femtosecond laser light can transfer spin angular momentum between magnetic subspecies that exhibit hybridized valence bands within an alloy or compound, and represents the fastest…
Giant magnetocaloric effect in the (Mn,Fe)NiSi-system
Sagar Ghorai, Rafael Martinho Vieira, Vitalii Shtender +7
The search for energy-efficient and environmentally friendly cooling technologies is a key driver for the development of magnetic refrigeration based on the magnetocaloric effect (…
Site-specific atomic substitution in a giant magnetocaloric FeP-type system
Sagar Ghorai, Johan Cedervall, Rebecca Clulow +9
Giant magnetocaloric (GMC) materials constitute a requirement for near room temperature magnetic refrigeration. (Fe,Mn)(P,Si) is a GMC compound with strong magnetoelastic coupl…
The effect of longitudinal spin-fluctuations on high temperature properties of CoMnGe
Erna K. Delczeg-Czirjak, O. Eriksson, A. V. Ruban
It is demonstrated that thermally induced longitudinal spin fluctuations (LSF) play an important role in itinerant CoMnGe at an elevated temperature. The effect of LSF is t…
Data-driven design of a new class of rare-earth free permanent magnets
Alena Vishina, Daniel Hedlund, Vitalii Shtender +9
A new class of rare-earth-free permanent magnets is proposed. The parent compound of this class is CoMnGe, and its discovery is the result of first principles theory combin…
Near-Unity Spin Hall Ratio in NiCu Alloys
Mark W. Keller, Katy S. Gerace, Monika Arora +3
We report a large spin Hall effect in the 3 transition metal alloy NiCu for , detected via the ferromagnetic resonance of a Permalloy…
The influence of antiphase boundary of the MnAl -phase on the energy product
S. Arapan, P. Nieves, S. Cuesta-López +6
In this work we use a multiscale approach toward a realistic design of a permanent magnet based on MnAl -phase and elucidate how the antiphase boundary defects present in this m…
Magnetic and mechanical effects of Mn substitutions in AlFe2B2
Johan Cedervall, Mikael S. Andersson, Diana Iusan +4
The mechanical and magnetic properties of the newly discovered MAB-phase class of materials based upon AlFe2B2 were investigated. The samples were synthesised from stoichiometric a…
Exchange dependent ultrafast magnetization dynamics in FeNi alloys
Somnath Jana, Ronny Knut, Erna K. Delczeg-Czirjak +13
Element specific ultrafast demagnetization was studied in FeNi alloys, covering the concentration range between . For all compositions, we observe a delay…
Inhomogeneous magnon scattering during ultrafast demagnetization
R. Knut, E. K. Delczeg-Czirjak, S. Jana +20
NiFe (Py) and Py alloyed with Cu exhibit intriguing ultrafast demagnetization behavior, where the Ni magnetic moment shows a delayed response relative to the Fe, an…
Ultrafast magnetization dynamics in pure and doped Heusler and inverse Heusler alloys
R. Chimata, E. K. Delczeg-Czirjak, J. Chico +4
By using a multiscale approach based on first-principles density functional theory combined with atomistic spin dynamics, we investigate the electronic structure and magnetization…
Magnetism and ultra-fast magnetization dynamics of Co and CoMn alloys at finite temperature
R. Chimata, E. K. Delczeg-Czirjak, A. Szilva +9
Temperature-dependent magnetic experiments like pump-probe measurements generated by a pulsed laser have become a crucial technique for switching the magnetization in the picosecon…
Magnetic structure of the magnetocaloric compound AlFe2B2
Johan Cedervall, Mikael Svante Andersson, Tapati Sarkar +6
The crystal and magnetic structures of AlFe2B2 have been studied with a combination of X-ray and neutron diffraction and electronic structure calculations. The magnetic and magneto…
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…
Localization of Fe d-states in Ni-Fe-Cu alloys and implications for ultrafast demagnetization
Ronny Knut, Erna K. Delczeg-Czirjak, Justin M. Shaw +11
NiFe (Py) and Py-Cu exhibit intriguing ultrafast demagnetization behavior, where the Ni magnetic moment shows a delayed response relative to the Fe [S. Mathias et al.…
Strongly enhanced magnetic moments in ferromagnetic FeMnPSi
Matthias Hudl, Lennart Häggström, Erna-Krisztina Delczeg-Czirjak +6
The compound FeMnPSi has been studied by magnetic measurements, Mössbauer spectroscopy and electronic structure and total energy calculations. An unexpected high…