arXiv subjects

E. Brueck

Publications and source records attributed to E. Brueck.

2 recordsLinked to original sources

arXiv2013

Tuning the metamagnetic transition in the (Co,Fe)MnP system for magnetocaloric purposes

The inverse magnetocaloric effect taking place at the antiferro-to-ferromagnetic transition of (Co,Fe)MnP phosphides has been characterized by magnetic and direct ΔTad measurements. In Co0.53Fe0.47MnP, entropy change of 1.5 Jkg-1K-1 and adiabatic temperature change of 0.6 K are found at room temperature for an intermediate field change (ΔB= 1 T). Several methods were used to control the metamagnetic transition properties, in each case a peculiar splitting of the antiferro-to-ferromagnetic transition is observed.

cond-mat.mtrl-sci↗

arXiv2001

Extraordinary magnetization behavior of single crystalline TbFe_4.4Al_7.6

We report the observation of a field-induced transformation from the easy-plane antiferromagnetic structure to the easy-axis ferrimagnetic structure in a single crystal of TbFe_4.4Al_7.6 (tetragonal ThMn_12 structure) at 5 K. Such a field-induced, irreversible transition has been identified for the first time. This transition is accompanied by a giant orthorhombic distortion: epsilon_aa = - epsilon_bb ~ 3.5x10^-4 that is associated with a magnetic hardness (mu_0H_C ~ 3 T) that is unprecedented in this category of materials.

cond-mat.mtrl-sci↗