Superior Magnetoresistance Performance of Hybrid Graphene Foam/Metal Sulfide Nanocrystal Devices

Zeb, M, Shabbir, B, Sagar, R and Mahmood, N., et al, 2019, 'Superior Magnetoresistance Performance of Hybrid Graphene Foam/Metal Sulfide Nanocrystal Devices', ACS Appl. Mater. Interfaces, vol. 11, no. 21, pp. 19397-19403.

Document type: Journal Article
Collection: Journal Articles

Title Superior Magnetoresistance Performance of Hybrid Graphene Foam/Metal Sulfide Nanocrystal Devices
Author(s) Zeb, M
Shabbir, B
Sagar, R
Mahmood, N., et al,
Year 2019
Journal name ACS Appl. Mater. Interfaces
Volume number 11
Issue number 21
Start page 19397
End page 19403
Total pages 7
Publisher American Chemical Society
Abstract Interfaces between metals and semiconducting materials can inevitably influence the magnetotransport properties, which are crucial for technological applications ranging from magnetic sensing to storage devices. By taking advantage of this, a metallic graphene foam is integrated with semiconducting copper-based metal sulfide nanocrystals, i.e., Cu2ZnSnS4 (copper-zinc-tin-sulfur) without direct chemical bonding and structural damage, which creates numerous nanoboundaries that can be basically used to tune the magnetotransport properties. Herein, the magnetoresistance of a graphene foam is enhanced from nearly 90 to 130% at room temperature and under the application of 5 T magnetic field strength due to the addition of Cu2ZnSnS4 nanocrystals in high densities. We believe that the enhancement of magnetoresistance in hybrid graphene foam/Cu2ZnSnS4 nanocrystals is due to the evolution of the mobility fluctuation mechanism, triggered by the formation of nanoboundaries. Incorporating Cu2ZnSnS4 nanocrystals into a graphene foam not only provides an effective way to further enhance the magnitude of magnetoresistance but also opens a suitable window to achieve efficient and highly functional magnetic sensors with a large, linear, and controllable response.
Subject Chemical Characterisation of Materials
Synthesis of Materials
Functional Materials
DOI - identifier 10.1021/acsami.9b00020
Copyright notice © 2019 American Chemical Society
ISSN 1944-8252
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