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Preparation and Magnetoresistive Properties of Tungsten Telluride Magnetoresistive Materials Based on Silver Doping Method[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2021.0624
Citation: Preparation and Magnetoresistive Properties of Tungsten Telluride Magnetoresistive Materials Based on Silver Doping Method[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2021.0624

Preparation and Magnetoresistive Properties of Tungsten Telluride Magnetoresistive Materials Based on Silver Doping Method

doi: 10.12338/j.issn.2096-9015.2021.0624
  • Available Online: 2022-04-22
  • Tungsten telluride magnetoresistive material is famous for its unsaturated magnetoresistance effect. Information storage and the manufacture of magnetic sensor devices based on this also represent an important direction of magnetoresistance research. The doping method can change the magnetic and electrical properties of the material. In order to explore whether tungsten telluride magnetoresistive materials can obtain excellent performance through silver doping, a detailed analysis of how to choose the doping method and why choose silver as the doping element is discussed. And a method for the gentle preparation of bulk silver-doped tungsten telluride magnetoresistive materials is established. A new self-service flux sintering method is used to prepare three typical silver-doped WTe2/Ag materials. The characterization and evaluation of phase, valence state, structure, and accurate measurement of magnetoresistance performance have obtained. These results indicate that the excellence of the silver doping method which is selected, the prepared WTe2/Ag not only has reliable material quality, but also effectively improves the magnetoresistance effect, which make it easier to realize the control conditions when testing the highest value. The measured magnetoresistance is 502.3% at 5 K and 14 T, which is 50% higher than undoped. The magnetoelectric performance is greatly improved by compared with other elements, which is of positive significance for the optimization design and practical application of electromagnetic devices.
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