Anisotropy of the magnetocaloric effect in DyNiAl

0330669 - FZÚ 2010 RIV NL eng J - Článek v odborném periodiku
Kaštil, J. - Javorský, P. - Andreev, Alexander V.
Anisotropy of the magnetocaloric effect in DyNiAl.
[Anisotropie magnetokalorického efektu v DyNiAl.]
Journal of Magnetism and Magnetic Materials. Roč. 321, č. 15 (2009), s. 2318-2321. ISSN 0304-8853. E-ISSN 1873-4766
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: magnetocaloric effec * DyNiAl * magnetism * anisotropy
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.204, rok: 2009

We present study of the anisotropic magnetocaloric effect in DyNiAl. This compound crystallizes in the hexagonal ZrNiAl-type structure, orders magnetically below TC = 31 K and undergoes a further magnetic phase transition at T1 = 15 K. The Dy-moments are aligned ferromagnetically along the hexagonal c-axis below TC, the additional antiferromagnetic component develops within the basal plane below T1. The magnetocaloric effect was evaluated from the magnetization measurements with field applied along the c-axis and perpendicular to it. Our data reveal a strong anisotropy of the magnetocaloric effect. The large effect occurs for field applied along the c-axis whereas the entropy change is small for the perpendicular field direction.

We present study of the anisotropic magnetocaloric effect in DyNiAl. This compound crystallizes in the hexagonal ZrNiAl-type structure, orders magnetically below TC = 31 K and undergoes a further magnetic phase transition at T1 = 15 K. The Dy-moments are aligned ferromagnetically along the hexagonal c-axis below TC, the additional antiferromagnetic component develops within the basal plane below T1. The magnetocaloric effect was evaluated from the magnetization measurements with field applied along the c-axis and perpendicular to it. Our data reveal a strong anisotropy of the magnetocaloric effect. The large effect occurs for field applied along the c-axis whereas the entropy change is small for the perpendicular field direction.
Trvalý link: http://hdl.handle.net/11104/0176402