Time-reversal-breaking Weyl nodal lines in two-dimensional A3C2 (A = Ti, Zr, Hf) intrinsically ferromagnetic materials with high Curie temperature

Nanoscale ◽  
2021 ◽  
Author(s):  
Feng Zhou ◽  
Ying Liu ◽  
Minquan KUANG ◽  
Peng Wang ◽  
Jianhua WANG ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Time Reversal ◽  
Three Dimensional ◽  
Ferromagnetic Materials ◽  
High Curie Temperature ◽  
Two Dimensional ◽  
Nodal Lines ◽  
Spin Polarized

Most materials that feature nontrivial topological band topology are spin-degenerate and three dimensional, strongly restricting them from application in spintronic nanodevices. Hence, two-dimensional (2D) intrinsically spin-polarized systems with rich topological...

scholarly journals A multiaxial lead-free two-dimensional organic-inorganic perovskite ferroelectric

2020 ◽  
Author(s):  
Chao-Ran Huang ◽  
Xuzhong Luo ◽  
Xiao-Gang Chen ◽  
Xian-Jiang Song ◽  
Zhi-Xu Zhang ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Color Change ◽  
2D Materials ◽  
Three Dimensional ◽  
The Other ◽  
Lead Free ◽  
High Curie Temperature ◽  
Two Dimensional ◽  
Inorganic Perovskite ◽  
First Time

Abstract Two-dimensional (2D) hybrid organic-inorganic perovskites (HOIPs) have recently gained tremendous interest because of their unique features in contrast to three-dimensional counterparts and traditional 2D materials. However, although some 2D HOIP ferroelectrics have been achieved, the issue of toxic Pb and uniaxial nature impede their further application. Herein, for the first time, we report a lead-free 2D HOIP multiaxial ferroelectric, [3,3-difluorocyclobutylammonium]2CuCl4 (1), which shows four ferroelectric axes and eight equivalent polarization directions, more than those of the other 2D HOIP ferroelectrics and even the inorganic perovskite ferroelectric BaTiO3 (three ferroelectric axes and six equivalent polarization directions). 1 also features a high Curie temperature of 380 K and exhibits remarkable thermochromism of color change from green-yellow to dark brown. To our knowledge, 1 is the first multiaxial lead-free 2D HOIP ferroelectric. This work sheds light on the exploration of better lead-free 2D HOIP ferroelectrics.

Screening and Design of Novel 2D Ferromagnetic Materials with High Curie Temperature above Room Temperature

2018 ◽  
Vol 10 (45) ◽  
pp. 39032-39039 ◽  
Author(s):  
Zhou Jiang ◽  
Peng Wang ◽  
Jianpei Xing ◽  
Xue Jiang ◽  
Jijun Zhao
Keyword(s):  
Curie Temperature ◽  
Room Temperature ◽  
Ferromagnetic Materials ◽  
High Curie Temperature

High Curie-temperature intrinsic ferromagnetism and hole doping-induced half-metallicity in two-dimensional scandium chlorine monolayers

2018 ◽  
Vol 3 (5) ◽  
pp. 551-555 ◽  
Author(s):  
Bing Wang ◽  
Qisheng Wu ◽  
Yehui Zhang ◽  
Yilv Guo ◽  
Xiwen Zhang ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Hole Doping ◽  
High Curie Temperature ◽  
Two Dimensional ◽  
Half Metallicity ◽  
Intrinsic Ferromagnetism

Two-dimensional scandium chlorine monolayers: high Curie-temperature intrinsic ferromagnetism and hole doping-induced half-metallicity.

scholarly journals Two-dimensional Weyl nodal-line semimetal in a d0 ferromagnetic K2N monolayer with a high Curie temperature

2020 ◽  
Vol 102 (12) ◽  
Author(s):  
Lei Jin ◽  
Xiaoming Zhang ◽  
Ying Liu ◽  
Xuefang Dai ◽  
Xunan Shen ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Nodal Line ◽  
High Curie Temperature ◽  
Two Dimensional

Bipolar magnetism in a two-dimensional NbS2 semiconductor with high Curie temperature

2018 ◽  
Vol 6 (42) ◽  
pp. 11401-11406 ◽  
Author(s):  
Yingjie Sun ◽  
Zhiwen Zhuo ◽  
Xiaojun Wu
Keyword(s):  
Curie Temperature ◽  
First Principles ◽  
Magnetic Semiconductor ◽  
High Curie Temperature ◽  
Two Dimensional ◽  
First Principles Calculations

First-principles calculations with the screened hybrid HSE06 functional reveal that the 2D NbS2 crystal is a bipolar magnetic semiconductor with high Curie temperature.

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