Details

Autor(en) / Beteiligte

• Yibole, H.
• Guillou, F.
• Huang, Y. K.
• Blake, G. R.
• Lefering, A. J. E.
• van Dijk, N. H.
• Brück, E.

Titel

First-order ferromagnetic transition in single-crystalline (Mn,Fe)2(P,Si)

Ist Teil von

• Applied physics letters, 2015-10, Vol.107 (16)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2015

Quelle

AIP Journals Complete

Beschreibungen/Notizen

• (Mn,Fe)2(P,Si) single crystals have been grown by flux method. Single crystal X-ray diffraction demonstrates that Mn0.83Fe1.17P0.72Si0.28 crystallizes in a hexagonal Fe2P crystal structure (space group P6¯2m) at both 100 and 280 K, in the ferromagnetic and paramagnetic states, respectively. Magnetization measurements show that the crystals display a first-order ferromagnetic phase transition at their Curie temperature (TC). The preferred magnetization direction is along the c axis. A weak magnetic anisotropy of K1 = 0.28 × 106 J/m3 and K2 = 0.22 × 106 J/m3 is found at 5 K. A series of discontinuous magnetization jumps is observed far below TC by increasing the field at constant temperature. These magnetization jumps are irreversible, occur spontaneously at a constant temperature and magnetic field, but can be restored by cycling across the first-order phase transition.