Perpendicular magnetic anisotropy in Co–Pt granular multilayers

dc.contributor.author	Bartolomé, J.
dc.contributor.author	Figueroa, A.I.
dc.contributor.author	García, L.M.
dc.contributor.author	Bartolomé, F.
dc.contributor.author	Ruiz, L.
dc.contributor.author	González-Calbet, J.M.
dc.contributor.author	Petroff, F.
dc.contributor.author	Deranlot, C.
dc.contributor.author	Wilhelm, F.
dc.contributor.author	Rogalev, A.
dc.contributor.author	Brookes, N.
dc.date.accessioned	2017-05-25T17:02:13Z
dc.date.available	2017-05-25T17:02:13Z
dc.date.issued	2012
dc.identifier.citation	Perpendicular magnetic anisotropy in Co–Pt granular multilayers / J. Bartolomé, A.I. Figueroa, L.M. García, F. Bartolomé, L. Ruiz, J.M. González-Calbet, F. Petroff, C. Deranlot, F. Wilhelm, A. Rogalev, N. Brookes // Физика низких температур. — 2012. — Т. 38, № 9. — С. 1053-1057. — Бібліогр.: 15 назв. — англ.	uk_UA
dc.identifier.issn	0132-6414
dc.identifier.other	PACS: 75.30.–m, 75.70.–i
dc.identifier.uri	http://dspace.nbuv.gov.ua/handle/123456789/117613
dc.description.abstract	Magnetization hysteresis curves have been measured on Co granular multilayers, (Al₂O₃/Co/Pt)N (N = 1 and 25), with the applied magnetic field parallel and perpendicular to the substrate plane. In all samples perpendicular magnetic anisotropy was observed. For Co particles with average diameter 3 nm, the coercive field at low temperature is μ₀HC = 0.5 T. HC decreases for increasing temperature and disappears at ≈200 K. A soft magnetic component is also present in all samples up to the freezing temperature Tf = 365 K. Co and Pt XMCD measurements at the L2,3 edges were performed, yielding to the orbital mL and spin mS contributions to the total magnetic moment of the system. These results, in addition to XANES ones, indicate the presence of CoxPt₁₋x alloy. Particles conformed of CoPt alloy, embedded in Pt and coupled magnetically by dipolar or RKKY interaction, may explain the phenomenology observed in these systems.	uk_UA
dc.description.sponsorship	This work was supported by the MECOM under Grant MAT11/23791 and Project IMANA from the DGA, in Spain. A.I.F. acknowledges a CSIC JAE2008-Predoc grant. The experiment HE3136 at the ESRF is acknowledged.	uk_UA
dc.language.iso	en	uk_UA
dc.publisher	Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України	uk_UA
dc.relation.ispartof	Физика низких температур
dc.subject	К 80-летию Виктора Валентиновича Еременко	uk_UA
dc.title	Perpendicular magnetic anisotropy in Co–Pt granular multilayers	uk_UA
dc.type	Article	uk_UA
dc.status	published earlier	uk_UA