Synthesis of Two-Dimensional MoO2 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; Chen Yi; Kun He; Yucheng Zhou; Jialing Liu; Bo Li; Xidong Duan

doi:10.1021/acs.nanolett.2c04721

Synthesis of Two-Dimensional MoO₂ Nanoplates with Large Linear Magnetoresistance and Nonlinear Hall Effect

Nano Lett. 2023 Mar 22;23(6):2179-2186. doi: 10.1021/acs.nanolett.2c04721. Epub 2023 Mar 2.

Authors

Hongmei Zhang^{1

2}, Yangwu Wu^{1

2}, Ziwei Huang^{1

2}, Xiaohua Shen^{1

2}, Bailing Li^{1

2}, Zucheng Zhang^{1

2}, Ruixia Wu^{1

2}, Di Wang^{1

2}, Chen Yi^{1

2}, Kun He^{1

2}, Yucheng Zhou^{1

2}, Jialing Liu^{1

2}, Bo Li^{1

2}, Xidong Duan^{1

2}

Affiliations

¹ Hunan Provincial Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, People's Republic of China.
² Hunan Provincial Key Laboratory of Two-Dimensional Materials, School of Physics and Electronics, Hunan University, Changsha, Hunan 410082, People's Republic of China.

PMID: 36862981
DOI: 10.1021/acs.nanolett.2c04721

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 MoO₂ nanoplates grown by a chemical vapor deposition (CVD) method and observe large LMR and nonlinear Hall behavior in MoO₂ nanoplates. As-obtained MoO₂ nanoplates exhibit rhombic shapes and high crystallinity. Electrical studies indicate that MoO₂ nanoplates feature a metallic nature with an excellent conductivity of up to 3.7 × 10⁷ S m^-1 at 2.5 K. MoO₂ 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 MoO₂ nanoplates are promising materials for fundamental studies and potential applications in magnetic storage devices.

Keywords: MoO2 nanoplates; chemical vapor deposition; large linear magnetoresistance; nonlinear Hall effect.