Synthesis of Two-Dimensional MoO<sub>2</sub> Nanoplates with Large Linear Magnetoresistance and Nonlinear Hall Effect.
basic_science · Level V
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- Record sourced from PubMed, PMID 36862981.
- Also identified by DOI 10.1021/acs.nanolett.2c04721.
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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<sub>2</sub> nanoplates grown by a chemical vapor deposition (CVD) method and observe large LMR and nonlinear Hall behavior in MoO<sub>2</sub> nanoplates. As-obtained MoO<sub>2</sub> nanoplates exhibit rhombic shapes and high crystallinity. Electrical studies indicate that MoO<sub>2</sub> nanoplates feature a metallic nature with an excellent conductivity of up to 3.7 × 10<sup>7</sup> S m<sup>-1</sup> at 2.5 K. MoO<sub>2</sub> 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<sub>2</sub> nanoplates are promising materials for fundamental studies and potential applications in magnetic storage devices.