Pressure effect on magnetic properties of GdCo.sub.2./sub.Fe.sub.2./sub.B

0347995 - FZÚ 2011 RIV GB eng J - Článek v odborném periodiku
Arnold, Zdeněk - Isnard, O. - Mayot, H. - Skorokhod, Yuriy - Kamarád, Jiří
Pressure effect on magnetic properties of GdCo₂Fe₂B.
Solid State Communications. Roč. 150, 35-36 (2010), s. 1614-1616. ISSN 0038-1098. E-ISSN 1879-2766
Grant CEP: GA ČR GA202/09/1027; GA ČR GA202/09/0030
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: borides * magnetic properties * compensation temperature * pressure effect
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.979, rok: 2010

The experimental study of the pressure effect on magnetization MS and compensation temperature TComp of ferrimagnetic GdCo₂Fe₂B in a magnetic field up to 7 T under hydrostatic pressures up to 10 kbar is presented. Due to the mutual antiparallel arrangement of Gd and 3d sublattices and the negligible pressure effect on localized Gd magnetic moment,the observed increase of Ms with pressure (dMS.5 K/dp = +0.007 μB kbar-1) can be attributed to the pressure induced decrease of 3d magnetic moments, predominately to the decrease of Fe moment, dmFe/dp = -2.8.10-3 μB/at. kbar. The pressure induced increase of MS is also responsible for the remarkable increase of T_Comp under pressure (dTComp/dp = +0:90 K/kbar). This opens the field to tunablibilty of the T_Comp.
Trvalý link: http://hdl.handle.net/11104/0188626