Observation of Linear Magnetoresistance in MoO[sub.2]

Magnetoresistance, the change in resistance with applied magnetic fields, is crucial to the magnetic sensor technology. Linear magnetoresistance has been intensively studied in semimetals and semiconductors. However, the air-stable oxides with a large linear magnetoresistance are highly desirable bu...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2024-06, Vol.14 (11)
Main Authors: Su, Yulong, He, Zhibin, Jiang, Ruizheng, Zhang, Jundong
Format: Article
Language:English
Subjects:
Magnetic properties
Molybdenum compounds
Oxides
Structure
Online Access:Get full text
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Summary:Magnetoresistance, the change in resistance with applied magnetic fields, is crucial to the magnetic sensor technology. Linear magnetoresistance has been intensively studied in semimetals and semiconductors. However, the air-stable oxides with a large linear magnetoresistance are highly desirable but remain to be fully explored. In this paper, we report the direct observation of linear magnetoresistance in polycrystalline MoO[sub.2] without any sign of saturation up to 7 T under 50 K. Interestingly, the linear magnetoresistance reaches as large as 1500% under 7 T at 2 K. The linear field dependence is in great contrast to the parabolic behavior observed in single-crystal MoO[sub.2] , probably due to phonon scattering near the grain boundaries. Our results pave the way to comprehending magneto-transport behavior in oxides and their potential applications in magnetic sensors.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano14110915