High-field magnetization study of a HoFe.sub.6./sub.Al.sub.6./sub. single crystal

0449248 - FZÚ 2016 RIV NL eng J - Journal Article
Gorbunov, Denis - Andreev, Alexander V. - Skourski, Y. - Tereshina, Evgeniya
High-field magnetization study of a HoFe₆Al₆ single crystal.
Journal of Alloys and Compounds. Roč. 648, Nov (2015), s. 488-493. ISSN 0925-8388. E-ISSN 1873-4669
R&D Projects: GA ČR GAP204/12/0150
Grant - others:AVČR(CZ) M100101203
Institutional support: RVO:68378271
Keywords : rare-earth intermetallics * magnetic anisotropy * ferrimagnetism * high magnetic fields * field-induced transition
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.014, year: 2015

Magnetization measurements have been performed in static (up to 14 T) and pulsed (up to 60 T) magnetic fields on a HoFe6Al6 single crystal with a tetragonal crystal structure. It is a ferrimagnet with exact compensation of the Ho and Fe sublattices at low temperatures, the spontaneous magnetic moment is zero at 4.2 K. At elevated temperatures, it passes through a wide maximum (4.2 mB at 200 K) and vanishes at TC = 315 K. The compound displays a high magnetic anisotropy of the easy-plane type with the [110] axis as the easy magnetization direction. The compound exhibits two field-induced magnetic phase transitions along the easy [110] axis and two more along the [100] axis, the hard direction in the basal plane. The critical fields of the lower- and higher-field transitions display qualitatively different temperature dependencies. A T-H magnetic phase diagram has been constructed for the [100] and [110] directions.
Permanent Link: http://hdl.handle.net/11104/0250827