Low-Voltage Control of (Co/Pt)(X) Perpendicular Magnetic Anisotropy Heterostructure for Flexible Spintronics
Low-Voltage Control of (Co/Pt)(X) Perpendicular Magnetic Anisotropy Heterostructure for Flexible Spintronics
复制标题
用于柔性自旋电子学的(Co/Pt)(X)垂直磁各向异性异质结构的低压控制
DOI：
10.1021/acsnano.8b03097
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发表时间：
2018
期刊：
影响因子：
17.1
通讯作者：
Liu Ming
中科院分区：
文献类型：
--
作者：
Zhao Shishun;Zhou Ziyao;Li Chunlei;Peng Bin;Hu Zhongqiang;Liu Ming
移动的互联网的发展趋势要求便携式和可穿戴式设备作为生物设备接口。磁场的电场控制是实现紧凑、重量轻和节能的可穿戴设备的一种有前途的方法。在一个柔性夹层异质结构中，垂直磁各向异性开关是通过低电压门控云母/Ta/（Pt/Co）x/Pt/离子凝胶/Pt中的离子凝胶实现的，其中（Pt/Co）x作为功能层。通过进行VSM、EPR和MOKE测量，确定了在拉伸应变的弯曲状态下1098 Oe的磁各向异性场变化，对应的磁各向异性能变为3.16 × 105 J/m ~ 3，巨电压调谐系数为0.79 × 105 J/m ~ 3·V.云母基板上的低电压和应变双重磁性控制使得可调柔性自旋电子器件具有增加的操纵程度。
The trend of mobile Internet requires portable and wearable devices as bio-device interfaces. Electric field control of magnetism is a promising approach to achieve compact, light-weight, and energy-efficient wearable devices. Within a flexible sandwich heterostructure, perpendicular magnetic anisotropy switching was achievedvialow-voltage gating control of an ionic gel in mica/Ta/(Pt/Co)x/Pt/ionic gel/Pt, where (Pt/Co)xacted as a functional layer. By conductingin situVSM, EPR, and MOKE measurements, a 1098 Oe magnetic anisotropy field change was determined at the bending state with tensile strain, corresponding to a magnetic anisotropy energy change of 3.16 × 105J/m3and a giant voltage tunability coefficient of 0.79 × 105J/m3·V. The low voltage and strain dual control of magnetism on mica substrates enables tunable flexible spintronic devices with an increased degree of manipulation.