Guojing Hu, Hui Guo, Senhao Lv, Linxuan Li, Yunhao Wang, Yechao Han, Lulu Pan, Yulan Xie, Weiqi Yu, Ke Zhu, Qi Qi, Guoyu Xian, Shiyu Zhu, Jinan Shi, Lihong Bao, Xiao Lin, Wu Zhou, Haitao Yang, Hong-Jun Gao
Van der Waals (vdW) ferromagnetic materials have emerged as a promising platform for the development of 2D spintronic devices. However, studies to date are restricted to vdW ferromagnetic materials with low Curie temperature (Tc ) and small magnetic anisotropy. Here, a chemical vapor transport method is developed to synthesize a high-quality room-temperature ferromagnet, Fe3 GaTe2 (c-Fe3 GaTe2 ), which boasts a high Tc = 356 K and large perpendicular magnetic anisotropy. Due to the planar symmetry breaking, an unconventional room-temperature antisymmetric magnetoresistance (MR) is first observed in c-Fe3 GaTe2 devices with step features, manifesting as three distinctive states of high, intermediate, and low resistance with the sweeping magnetic field...
April 17, 2024: Advanced Materials