Perpendicular magnetic anisotropy in Co–Pt granular multilayers

Perpendicular magnetic anisotropy in Co–Pt granular multilayers

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 n...

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Бібліографічні деталі
Дата:2012
Автори: Bartolomé, J., Figueroa, A.I., García, L.M., Bartolomé, F., Ruiz, L., González-Calbet, J.M., Petroff, F., Deranlot, C., Wilhelm, F., Rogalev, A., Brookes, N.
Формат: Стаття
Мова:English
Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2012
Назва видання:Физика низких температур
Теми:
К 80-летию Виктора Валентиновича Еременко
Онлайн доступ:http://dspace.nbuv.gov.ua/handle/123456789/117613
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати: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.

Репозитарії

Digital Library of Periodicals of National Academy of Sciences of Ukraine
id irk-123456789-117613
record_format dspace
spelling irk-123456789-1176132017-05-26T03:02:33Z Perpendicular magnetic anisotropy in Co–Pt granular multilayers Bartolomé, J. Figueroa, A.I. García, L.M. Bartolomé, F. Ruiz, L. González-Calbet, J.M. Petroff, F. Deranlot, C. Wilhelm, F. Rogalev, A. Brookes, N. К 80-летию Виктора Валентиновича Еременко 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. 2012 Article 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. 0132-6414 PACS: 75.30.–m, 75.70.–i http://dspace.nbuv.gov.ua/handle/123456789/117613 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic К 80-летию Виктора Валентиновича Еременко
К 80-летию Виктора Валентиновича Еременко
spellingShingle К 80-летию Виктора Валентиновича Еременко
К 80-летию Виктора Валентиновича Еременко
Bartolomé, J.
Figueroa, A.I.
García, L.M.
Bartolomé, F.
Ruiz, L.
González-Calbet, J.M.
Petroff, F.
Deranlot, C.
Wilhelm, F.
Rogalev, A.
Brookes, N.
Perpendicular magnetic anisotropy in Co–Pt granular multilayers
Физика низких температур
description 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.
format Article
author Bartolomé, J.
Figueroa, A.I.
García, L.M.
Bartolomé, F.
Ruiz, L.
González-Calbet, J.M.
Petroff, F.
Deranlot, C.
Wilhelm, F.
Rogalev, A.
Brookes, N.
author_facet Bartolomé, J.
Figueroa, A.I.
García, L.M.
Bartolomé, F.
Ruiz, L.
González-Calbet, J.M.
Petroff, F.
Deranlot, C.
Wilhelm, F.
Rogalev, A.
Brookes, N.
author_sort Bartolomé, J.
title Perpendicular magnetic anisotropy in Co–Pt granular multilayers
title_short Perpendicular magnetic anisotropy in Co–Pt granular multilayers
title_full Perpendicular magnetic anisotropy in Co–Pt granular multilayers
title_fullStr Perpendicular magnetic anisotropy in Co–Pt granular multilayers
title_full_unstemmed Perpendicular magnetic anisotropy in Co–Pt granular multilayers
title_sort perpendicular magnetic anisotropy in co–pt granular multilayers
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
publishDate 2012
topic_facet К 80-летию Виктора Валентиновича Еременко
url http://dspace.nbuv.gov.ua/handle/123456789/117613
citation_txt 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.
series Физика низких температур
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first_indexed 2023-10-18T20:30:12Z
last_indexed 2023-10-18T20:30:12Z
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