Reversibly controlled magnetic domains of Co film via electric field driven oxygen migration at nanoscale
Reversibly controlled magnetic domains of Co film via electric field driven oxygen migration at nanoscale
复制标题
通过纳米级电场驱动氧迁移可逆控制 Co 薄膜的磁畴
DOI:
10.1063/1.5087964
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发表时间:
2019-06
影响因子:
4
通讯作者:
Li Run Wei
中科院分区:
文献类型:
--
作者:
Dhanapal Pravarthana;Zhang Tuo;Wang Baomin;Yang Huali;Xuan Haicheng;Bi Chong;Wang Weigang;Li Run Wei
Electric field control of perpendicular magnetic anisotropy (PMA) can enable low power consumption for perpendicular magnetic random access memory devices. However, the tuning of PMA by the electric field in ferromagnetic metal thin films is less efficient and limited to the interface due to the screening effect. Alternatively, the magnetoionic effect can control PMA efficiently, which utilizes ion migrations over the surface of the ferromagnetic metal by interfacing it with the charge reservoir of oxygen ions like GdOx. In this paper, we report the reversibly controlled magnetic domains of PMA Co in the Pt/Co/GdOx trilayer via the electric field at the nanoscale using conductive atomic force microscopy and magnetic force microscopy (MFM). The magnetic domain phase values determined by MFM decrease and increase when negative and positive bias voltages of magnitude 4 V are applied to the surface of GdOx, respectively. These results suggest a path toward control of PMA materials at the nanoscale by the electric field for information storage devices.
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影响因子:
16.6
作者:
Radaelli, G.;Petti, D.;Plekhanov, E.;Fina, I.;Torelli, P.;Salles, B. R.;Cantoni, M.;Rinaldi, C.;Gutierrez, D.;Panaccione, G.;Varela, M.;Picozzi, S.;Fontcuberta, J.;Bertacco, R.
通讯作者:
Bertacco, R.
影响因子:
8.6
作者:
Bi, Chong;Liu, Yaohua;Wang, W. G.
通讯作者:
Wang, W. G.
影响因子:
56.9
作者:
Weisheit, Martin;Faehler, Sebastian;Givord, Dominique
通讯作者:
Givord, Dominique
影响因子:
8.6
作者:
Nakamura, Kohji;Shimabukuro, Riki;Freeman, A. J.
通讯作者:
Freeman, A. J.
影响因子:
44.1
作者:
Hellman, Frances;Hoffmann, Axel;Zink, Barry L.
通讯作者:
Zink, Barry L.