Strain-sensitive ferromagnetic two-dimensional Cr2Te3

Strain-sensitive ferromagnetic two-dimensional Cr2Te3
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应变敏感铁磁二维 Cr2Te3

DOI:
10.1007/s12274-021-3633-3
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发表时间:
2021-07
期刊:
影响因子:
9.9
通讯作者:
Tianyou Zhai
Tianyou Zhai
中科院分区:
材料科学1区
文献类型:
--
作者:
Junchuan Zhong;Mingshan Wang;Teng Liu;Yinghe Zhao;Xiang Xu;Shasha Zhou;Junbo Han;Lin Gan;Tianyou Zhai

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寻找室温磁性二维(2D)材料是一个诱人的目标,但令人满意的材料数量很少。应变可以在二维材料的晶格结构中引入相当大的变形,从而显著地调节其固有性质。在这项工作中,我们展示了一个显着的应变调制的磁性在化学气相沉积Cr2 Te 3纳米片生长在云母衬底。我们发现Cr2 Te 3纳米片的居里温度可以分别在拉伸和压缩应变下进行正调制和负调制,最大变化值为1040和-90 K,取决于样品的厚度。此外,Cr2 Te 3纳米片的矫顽场在外加应力作用下也出现了明显的下降,这可能是由于交换作用的减弱或磁化方向的改变.这项工作提出了一个承诺,采用界面应变,以加速室温二维磁学的实际应用。
Searching for room temperature magnetic two-dimensional (2D) materials is a charming goal, but the number of satisfied materials is tiny. Strain can introduce considerable deformation into the lattice structure of 2D materials, and thus significantly modulate their intrinsic properties. In this work, we demonstrated a remarkable strain-modulated magnetic properties in the chemical vapor deposited Cr2Te3nanoflakes grown on mica substrate. We found the Curie temperature of Cr2Te3nanoflakes can be positively and negatively modulated under tensile and compressive strain respectively, with a maximum varied value of ∼ 40 and −90 K, dependent on the thickness of samples. Besides, the coercive field of Cr2Te3nanoflakes also showed a significant decrease under the applied strain, suggesting the decrease of exchange interaction or the change of the magnetization direction. This work suggests a promise to employ interfacial strain to accelerate the practical application of room temperature 2D magnetics.
二维 Cr2Te3 中的可调谐室温铁磁性
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