Ultrahigh in-plane uniaxial magnetic anisotropy of amorphous FeCoHf composition gradient films
Ultrahigh in-plane uniaxial magnetic anisotropy of amorphous FeCoHf composition gradient films
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DOI：
10.1016/j.matlet.2023.134810
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发表时间：
2023-10
影响因子：
3
通讯作者：
Zeyu Han;Cheng Song;Jie Zhou;Zhi Ma;Li Ma;Fu Zheng
中科院分区：
文献类型：
--
作者：
Zeyu Han;Cheng Song;Jie Zhou;Zhi Ma;Li Ma;Fu Zheng
在室温下制备了具有Hf组分梯度的非晶态FeCoHf薄膜。采用成分梯度溅射技术，通过改变沉积功率来控制掺杂元素Hf的成分梯度。有趣的是，在沉积的FeCoHf薄膜中，获得了高达640Oe的面内单轴磁各向异性场，共振频率为6.5 GHz。这种大的各向异性场可以归因于非晶态FeCoHf薄膜对成分梯度的高度敏感。FeCoHf薄膜在室温下表现出的超高各向异性为各种应用提供了巨大的技术潜力。
Amorphous FeCoHf films with a Hf composition gradient were prepared at room temperature. The composition gradient sputtering technique was used to control the composition gradient of the doped element Hf by changing the deposition power of Hf. Interestingly, in the as-deposited FeCoHf films, an in-plane uniaxial magnetic anisotropy field of up to 640 Oe was achieved, and the resonance frequency was 6.5 GHz. The large anisotropy field can be attributed to the high sensitivity of the amorphous FeCoHf films to the composition gradient. The ultrahigh anisotropy exhibited by FeCoHf films at room temperature holds significant technological potential for various applications.