Effect of hydrostatic and uniaxial pressure on structural and magnetic transitions in TbNiAl

0435236 - FZÚ 2015 RIV NL eng J - Článek v odborném periodiku
Kaštil, Jiří - Klicpera, M. - Prchal, J. - Míšek, Martin - Prokleška, J. - Javorský, P.
Effect of hydrostatic and uniaxial pressure on structural and magnetic transitions in TbNiAl.
Journal of Alloys and Compounds. Roč. 585, Feb (2014), s. 98-102. ISSN 0925-8388. E-ISSN 1873-4669
Institucionální podpora: RVO:68378271
Klíčová slova: magnetic ordering * electrical resistivity * hydrostatic pressure * structural transition
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.999, rok: 2014

We have studied development of structural and magnetic properties of TbNiAl single crystal under applied hydrostatic and uniaxial pressure. TbNiAl crystallizes in the hexagonal ZrNiAl-type structure. The lattice parameters show a transition between two phases with different c/a ratio around 120 K as evidenced by X-ray diffraction, resistivity and thermal expansion measurements. The application of hydrostatic pressure stabilizes the low c/a phase. The transition shifts consequently to lower temperatures with applied pressure and vanishes for pressure above 0.55 GPa. The magnetic properties are characterized by antiferromagnetic order below TN = 45 K. The application of magnetic field of 0.3 T along the c-axis leads to a metamagnetic transition to ferromagnetic order. The critical field of this transition shifts considerably to higher values with hydrostatic pressure whereas the uniaxial pressure applied along the c axis moves the transition to lower fields.
Trvalý link: http://hdl.handle.net/11104/0239131