Anja Waske

Magnetocaloric effect of an Fe-based metallic glass compared to benchmark gadolinium

We report on the magnetocaloric effect in an Fe-based metallic glass (Fe80B12Nb8) as compared to the benchmark material gadolinium. From temperature-dependent magnetization measurements, the magnetic entropy change was calculated using the thermodynamic Maxwell relations. The adiabatic temperature change was directly measured for both materials using a dedicated setup. An analysis of the magnetic transition in amorphous Fe80B12Nb8 and crystalline gadolinium using a mean field and a phenomenological model was carried out. It was shown that both materials, in particular crystalline gadolinium, which does not possess structural disorder but merely a fluctuation of the exchange integral, can be described using the Handrich model for the magnetic transition of disordered materials. Furthermore, the Landau theory of second-order phase transitions quantitatively describes the magnetic entropy change and its dependence on the applied field very well for both materials with different definitions of disorder.

Linear temperature dependence of the magnetic heat conductivity in CaCu2O3

We present experimental results for the thermal conductivity

Thickness dependent exchange bias in martensitic epitaxial Ni-Mn-Sn thin films

\kappa

The impact of surface morphology on the magnetovolume transition in magnetocaloric LaFe11.8Si1.2

of the pseudo 2-leg ladder material

Exchange bias effect in martensitic epitaxial Ni-Mn-Sn thin films applied to pin CoFeB/MgO/CoFeB magnetic tunnel junctions

\rm CaCu_2O_3

Reentrant spin-glass behavior and bipolar exchange-bias effect in “Sn” substituted cobalt-orthotitanate

. The strong buckling of the ladder rungs renders this material a good approximation to a

Structure and giant inverse magnetocaloric effect of epitaxial Ni-Co-Mn-Al films

S=1/2

Low-temperature anomalous magnetic behavior of Co2TiO4 and Co2SnO4

Heisenberg-chain. Despite a strong suppression of the thermal conductivity of this material in all crystal directions due to inherent disorder, we find a dominant magnetic contribution

Absorption Edge X‐Ray Tomography for the Analysis of Particle Deposition in Packed Bed Filters

\kappa_\mathrm{mag}

Role of disorder when upscaling magnetocaloric Ni–Co–Mn–Al Heusler alloys from thin films to ribbons

along the chain direction.