Magnetic properties and critical behavior of quasi-2D layered Cr4Te5 thin film
Magnetic properties and critical behavior of quasi-2D layered Cr4Te5 thin film
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准二维层状Cr4Te5薄膜的磁性能和临界行为
DOI：
10.1007/s11467-022-1210-1
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发表时间：
2022-11
影响因子：
7.5
通讯作者：
Hao Yang
中科院分区：
文献类型：
--
作者：
Hao Liu;Jiyu Fan;Huan Zheng;Jing Wang;Chunlan Ma;Haiyan Wang;Lei Zhang;Caixia Wang;Yan Zhu;Hao Yang
准二维层状Cr_4Te_5薄膜由于具有接近室温的高居里温度和较大的饱和磁化强度而受到人们的广泛关注。然而，在Cr 4 Te 5薄膜中的磁相互作用和磁相变的本质还没有得到彻底的探索。本文通过脉冲激光沉积（PLD）外延制备Cr 4 Te 5薄膜，研究了其磁相变的临界行为。用线性外推法结合Arrott-Noakes状态方程得到了最终的临界指数β = 0.359（2）和γ = 1.54（2），并用Widom标度关系和标度假设验证了其准确性。我们发现Cr_4Te_5薄膜系统中存在着一些磁无序，这与Cr_4Te_5的临界行为有关，所以它的临界行为与任何常规普适类都有很大的距离。此外，我们还确定了Cr 4 Te 5薄膜表现出准二维长程磁相互作用。最后，用Takahashi自旋涨落自洽重整化理论证实了Cr_4Te_5薄膜的巡游铁磁体。我们的工作为理解类似二维层状薄膜中的磁相互作用机制提供了新的思路。
Quasi-2D layered Cr4Te5 thin film has attracted great attention because it possesses the high Curie temperature close to room temperature and relatively large saturation magnetization. However, the magnetic interactions and the nature of magnetic phase transition in the Cr4Te5 film have not been explored thoroughly. In this paper, we focused on the critical behavior of its magnetic phase transition through the epitaxial Cr4Te5 film fabricated by pulsed laser deposition (PLD). The final critical exponents β = 0.359(2) and γ = 1.54(2) were obtained by linear extrapolation together with Arrott-Noakes equation of state, and their accuracy was confirmed by using the Widom scaling relation and scaling hypothesis. We find that some magnetic disorders exist in the Cr4Te5 film system, which is related to Cr4Te5 critical behavior why its critical behavior is quite far from any conventional universality class. Furthermore, we also determined that the Cr4Te5 film exhibits a quasi-2D long-range magnetic interaction. Finally, the itinerant ferromagnets of Cr4Te5 films were confirmed by the Takahashi’s self-consistent renormalization theory of spin fluctuations. Our work provides a new idea for understanding the mechanism of magnetic interactions in similar 2D layered films.
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DOI：
10.1063/1.5019286
发表时间：
2018-01
期刊：
arXiv: Materials Science
影响因子：
--
作者：
G. Lin;G. Lin;Xuan Luo;Fangchu Chen;Fangchu Chen;Jian-Min Yan;Jian-Min Yan;Jian-Hua Gao;Jian-Hua Gao;Y. P. Sun;Y. P. Sun;Wei Tong;P. Tong;Wenjian Lu;Zhigao Sheng;Zhigao Sheng;Wenhai Song;Xiangde Zhu;Yuping Sun;Yuping Sun
通讯作者：
G. Lin;G. Lin;Xuan Luo;Fangchu Chen;Fangchu Chen;Jian-Min Yan;Jian-Min Yan;Jian-Hua Gao;Jian-Hua Gao;Y. P. Sun;Y. P. Sun;Wei Tong;P. Tong;Wenjian Lu;Zhigao Sheng;Zhigao Sheng;Wenhai Song;Xiangde Zhu;Yuping Sun;Yuping Sun
影响因子：
3.4
作者：
Y. Zhu;X. Kong;T. Rhone;Hong Guo
通讯作者：
Y. Zhu;X. Kong;T. Rhone;Hong Guo
二维 Cr2Te3 中的可调谐室温铁磁性
影响因子：
10.8
作者：
Yao Wen;Zhehong Liu;Yu Zhang;Congxin Xia;Baoxing Zhai;Xinhui Zhang;Guihao Zhai;Chao Shen;Peng He;Ruiqing Cheng;Lei Yin;Yuyu Yao;Marshet Getaye Sendeku;Zhenxing Wang;Xubing Ye;Chuansheng Liu;Chao Jiang;Chongxin Shan;Youwen Long;Jun He
通讯作者：
Jun He
半金属 Heusler 合金 Co2TiSn 的临界行为
影响因子：
3.7
作者：
Azizur Rahman;Majeed ur Rehman;Dechen Zhang;Min Zhang;Xiangqi Wang;Rucheng Dai;Zhongping Wang;Xiaoping Tao;Lei Zhang;Zengming Zhang
通讯作者：
Zengming Zhang
影响因子：
44.1
作者：
KADANOFF, LP;GOTZE, W;KANE, J
通讯作者：
KANE, J