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

0347995 - FZÚ 2011 RIV GB eng J - Journal Article
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
R&D Projects: GA ČR GA202/09/1027; GA ČR GA202/09/0030
Institutional research plan: CEZ:AV0Z10100521
Keywords : borides * magnetic properties * compensation temperature * pressure effect
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.979, year: 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.
Permanent Link: http://hdl.handle.net/11104/0188626