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001024841 1001_ $$0P:(DE-HGF)0$$aLv, Hua$$b0$$eCorresponding author
001024841 245__ $$aLarge‐Area Synthesis of Ferromagnetic Fe 5− x GeTe 2 /Graphene van der Waals Heterostructures with Curie Temperature above Room Temperature
001024841 260__ $$aWeinheim$$bWiley-VCH$$c2023
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001024841 520__ $$aVan der Waals (vdW) heterostructures combining layered ferromagnets and other 2D crystals are promising building blocks for the realization of ultracompact devices with integrated magnetic, electronic, and optical functionalities. Their implementation in various technologies depends strongly on the development of a bottom-up scalable synthesis approach allowing for realizing highly uniform heterostructures with well-defined interfaces between different 2D-layered materials. It is also required that each material component of the heterostructure remains functional, which ideally includes ferromagnetic order above room temperature for 2D ferromagnets. Here, it is demonstrated that the large-area growth of Fe5−xGeTe2/graphene heterostructures is achieved by vdW epitaxy of Fe5−xGeTe2 on epitaxial graphene. Structural characterization confirms the realization of a continuous vdW heterostructure film with a sharp interface between Fe5−xGeTe2 and graphene. Magnetic and transport studies reveal that the ferromagnetic order persists well above 300 K with a perpendicular magnetic anisotropy. In addition, epitaxial graphene on SiC(0001) continues to exhibit a high electronic quality. These results represent an important advance beyond nonscalable flake exfoliation and stacking methods, thus marking a crucial step toward the implementation of ferromagnetic 2D materials in practical applications.
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001024841 7001_ $$0P:(DE-HGF)0$$ada Silva, Alessandra$$b1
001024841 7001_ $$0P:(DE-HGF)0$$aFigueroa, Adriana I.$$b2
001024841 7001_ $$0P:(DE-HGF)0$$aGuillemard, Charles$$b3
001024841 7001_ $$0P:(DE-HGF)0$$aAguirre, Iván Fernández$$b4
001024841 7001_ $$0P:(DE-HGF)0$$aCamosi, Lorenzo$$b5
001024841 7001_ $$0P:(DE-HGF)0$$aAballe, Lucia$$b6
001024841 7001_ $$0P:(DE-HGF)0$$aValvidares, Manuel$$b7
001024841 7001_ $$0P:(DE-HGF)0$$aValenzuela, Sergio O.$$b8
001024841 7001_ $$0P:(DE-Juel1)128631$$aSchubert, Jürgen$$b9$$ufzj
001024841 7001_ $$0P:(DE-HGF)0$$aSchmidbauer, Martin$$b10
001024841 7001_ $$0P:(DE-HGF)0$$aHerfort, Jens$$b11
001024841 7001_ $$0P:(DE-Juel1)177087$$aHanke, Michael$$b12$$ufzj
001024841 7001_ $$0P:(DE-HGF)0$$aTrampert, Achim$$b13
001024841 7001_ $$0P:(DE-HGF)0$$aEngel-Herbert, Roman$$b14
001024841 7001_ $$0P:(DE-HGF)0$$aRamsteiner, Manfred$$b15
001024841 7001_ $$0P:(DE-HGF)0$$aLopes, Joao Marcelo J.$$b16
001024841 773__ $$0PERI:(DE-600)2168935-0$$a10.1002/smll.202302387$$gVol. 19, no. 39, p. 2302387$$n39$$p2302387$$tSmall$$v19$$x1613-6810$$y2023
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