| Popis: |
The surface of the insulating MnPS3 layered material and the related intercalation compound Mn1-xPS3(K+)2x(x= 0.2) were observed by Atomic Force Microscopy (AFM) with an atomic resolution. Unexpectedly, pure MnPS3 surface displays three types of images. The sulfur atom plane is naturally observed, with a S-S distance (3.5 A) in good agreement with the crystallographic structure. Moreover, we measured an other periodic spacing (6.5 A) which also appears on the images of the potassium intercalate surface. This feature is discussed in terms of structural modifications inside a MnPS3 sheet. The presence of guest species in the interlamellar space could explain this modification. In the case of pure MnPS3, water molecules could be reversibly inserted between the |
