Researchers from the Hefei Institutes of Physical Science, in collaboration with Henan University, explored the electrical transport properties of a platinum (Pt) and chromium iodide (CrI₃) heterostructure, showing promising implications for spintronics. By constructing high-quality CrI₃ crystals and Pt/CrI₃ heterostructures, the team observed that Pt acquired ferromagnetism through a magnetic proximity effect when in contact with CrI₃ nanosheets, evidenced by an anomalous Hall effect. Temperature increases and Pt layer thickness diminished this effect, indicating interface-driven magnetization. Additionally, higher currents reduced coercivity and saturation resistance in Pt, and calculations revealed hybridized orbitals forming at the Pt/CrI₃ interface. This research advances the understanding of electronic exchange interactions at interfaces, with potential applications in next-generation spintronic devices.
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