Synthesis of Two-Dimensional MoO<sub>2</sub> Nanoplates with Large Linear Magnetoresistance and Nonlinear Hall Effect
Hongmei Zhang, Yangwu Wu, Ziwei Huang, Xiaohua Shen, Bailing Li, Zucheng Zhang, Ruixia Wu, Di Wang, Yi Chen, Kun He, Yucheng Zhou, Jialing Liu, Bo Li, Xidong Duan
Abstract
Two-dimensional (2D) materials with large linear magnetoresistance (LMR) are very interesting owing to their potential application in magnetic storage or sensor devices. Here, we report the synthesis of 2D MoO 2 nanoplates grown by a chemical vapor deposition (CVD) method and observe large LMR and nonlinear Hall behavior in MoO 2 nanoplates. As-obtained MoO 2 nanoplates exhibit rhombic shapes and high crystallinity. Electrical studies indicate that MoO 2 nanoplates feature a metallic nature with an excellent conductivity of up to 3.7 × 10 7 S m –1 at 2.5 K. MoO 2 nanoplates display a large LMR of up to 455% at 3 K and −9 T. A thickness-dependent LMR analysis suggests that LMR values increase upon increasing the thickness of nanoplates. Besides, nonlinearity has been found in the magnetic-field-dependent Hall resistance, which decreases with increasing temperatures. Our studies highlight that MoO 2 nanoplates are promising materials for fundamental studies and potential applications in magnetic storage devices.