Room-temperature ferromagnetic CoSe2nanoplates synthesized by chemical vapor deposition

Sen Tian; Wenjie Wang; Mengfan Zhao; Yilin Han; Yuxin Tian; Shengxiang Ji; Liang Yao; Lixuan Liu; Feifei Ling; Zhiyan Jia; Fang Zhang

doi:10.1088/1361-648X/ad13d5

Room-temperature ferromagnetic CoSe₂nanoplates synthesized by chemical vapor deposition

J Phys Condens Matter. 2023 Dec 22;36(13). doi: 10.1088/1361-648X/ad13d5.

Authors

Sen Tian¹, Wenjie Wang², Mengfan Zhao¹, Yilin Han¹, Yuxin Tian¹, Shengxiang Ji¹, Liang Yao¹, Lixuan Liu¹, Feifei Ling³, Zhiyan Jia¹, Fang Zhang¹

Affiliations

¹ Institute of Quantum Materials and Devices, Tiangong University, Tianjin 300387, People's Republic of China.
² College of Science, China Agricultural University, Beijing 100083, People's Republic of China.
³ Hebei Technology Innovation Center of Phase Change Thermal Management of Data Center, Hebei University of Water Resources and Electric Engineering, Cangzhou 061001, People's Republic of China.

PMID: 38064749
DOI: 10.1088/1361-648X/ad13d5

Abstract

Among novel two-dimensional materials, transition metal dichalcogenides (TMDs) with 3dmagnetic elements have been extensively researched owing to their unique magnetic, electric, and photoelectric properties. As an important member of TMDs, CoSe₂is an interesting material with controversial magnetic properties, hitherto there are few reports related to the magnetism of CoSe₂materials. Here, we report the synthesis of CoSe₂nanoplates on Al₂O₃substrates by chemical vapor deposition (CVD). The CVD-grown CoSe₂nanoplates exhibit three typical morphologies (regular hexagonal, hexagonal, and pentagonal shapes) and their lateral sizes and thickness of CoSe₂nanoplates can reach up to hundreds of microns and several hundred nanometers, respectively. The electric-transport measurement shows a metallic feature of CoSe₂nanoplates. Furthermore, the slanted hysteresis loop and nonzero remnant magnetization of the CoSe₂nanoplates confirm the ferromagnetism in the temperature range of 5-400 K. This work provides a novel platform for designing CoSe₂-based spintronic devices and studying related magnetic mechanisms.

Keywords: 2D materials; CoSe2 nanoplates; room-temperature ferromagnetism.