Enhancement of the Coercive Field and Exchange Bias Effect in Fe3GeTe2/MnPX3 (X = S and Se) van der Waals Heterostructures

• Published in: ACS applied materials & interfaces Vol. 13; no. 20; pp. 24314 - 24320
• Main Authors: Dai, Hongwei, Cheng, Hui, Cai, Menghao, Hao, Qinghua, Xing, Yuntong, Chen, Hongjing, Chen, Xiaodie, Wang, Xia, Han, Jun-Bo
• Format: Journal Article
• Language: English
• Published: American Chemical Society 26.05.2021
• Subjects: circular dichroism spectroscopy; magnetism; Surfaces, Interfaces, and Applications; temperature; van der Waals forces; magnetic proximity effect; van der Waals heterostructures; exchange bias effect; two-dimensional magnets; magneto-optical Kerr effect
• ISSN: 1944-8244; 1944-8252; 1944-8252
• DOI: 10.1021/acsami.1c05265

Fe3GeTe2/MnPS3 and Fe3GeTe2/MnPSe3 van der Waals heterostructures were fabricated by mechanical exfoliation. Via the magneto-optical Kerr effect and reflected magnetic circular dichroism measurements, we have observed nearly three times enhancement of the coercive field, improvement of Curie temperature, and exchange bias effect in both heterostructures. These observations may provide new insights into the emergent heterostructure devices between itinerant ferromagnets and metal thio- and selenophosphates for both applied and fundamental research studies in magnetic correlations.