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Scaling of the magnetic entropy change in chiral helimagnetic YbNi 3 Al 9 .
- Source :
-
Journal of physics. Condensed matter : an Institute of Physics journal [J Phys Condens Matter] 2020 May 08; Vol. 32 (19), pp. 195801. - Publication Year :
- 2020
-
Abstract
- Generally, magnetic anisotropy is a common feature of a layered magnetic material, the exploration of which plays a key role in understanding the intrinsic magnetic couplings. In this work, we have studied the field-induced magnetic transitions for layered YbNi <subscript>3</subscript> Al <subscript>9</subscript> as the external magnetic field is applied perpendicularly ([Formula: see text]) and parallel (H//c) to the c-axis. We find that two independent universal curves of magnetic entropy change [[Formula: see text]] can be fitted out for [Formula: see text] and H//c, respectively. According to the universality principle of scaling, the extra magnetic entropy changes ([Formula: see text] and [Formula: see text]) caused by the field-induced magnetic phase transitions can be obtained for [Formula: see text] and H//c. The two-dimensional [Formula: see text] plots as functions of field and temperature are constructed, which clearly reveal the evolutions of the magnetic entropy changes resulted from the two different field-induced magnetic phase transitions. It is suggested that the [Formula: see text] for [Formula: see text] with the maximum at (3.2 K, 4.1 kOe) originates from a field-modulated helicoidal spin-texture. However, the [Formula: see text] for H//c with the maximum at (3.4 K, 13.8 kOe) stems from a field-induced canted antiferromagnetic state.
Details
- Language :
- English
- ISSN :
- 1361-648X
- Volume :
- 32
- Issue :
- 19
- Database :
- MEDLINE
- Journal :
- Journal of physics. Condensed matter : an Institute of Physics journal
- Publication Type :
- Academic Journal
- Accession number :
- 31968322
- Full Text :
- https://doi.org/10.1088/1361-648X/ab6e8f