title: High-resolution transmission electron microscopy of hexagonal and rhombohedral molybdenum disulfide crystals.
abstract: Natural (molybdenite) and synthesized molybdenum disulfide crystals have been studied by high-resolution transmission electron microscopy. The image simulation demonstrates that the [0001] and [0110] HRTEM images of hexagonal and rhombohedral MoS2 crystals hardly disclose their stacking sequences, and that the [2110] images can distinguish the Mo and S columns along the incident electron beam and enable one to determine not only the crystal structure but also the fault structure. Observed [0001] images of cleaved molybdenite and synthesized MoS2 crystals, however, reveal the strain field around partial dislocations limiting an extended dislocation. A cross-sectional image of a single molecular (S-Mo-S) layer cleaved from molybdenite has been observed. Synthesized MoS2 flakes which were prepared by grinding have been found to be rhombohedral crystals containing many stacking faults caused by glides between S/S layers.
authors.affiliation: Kyoto Institute of Technology, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Isshiki
authors.forename: K
authors.initials: K
authors.lastname: Nishio
authors.forename: H
authors.initials: H
authors.lastname: Saijo
authors.forename: M
authors.initials: M
authors.lastname: Shiojiri
authors.forename: Y
authors.initials: Y
authors.lastname: Yabuuchi
authors.forename: N
authors.initials: N
authors.lastname: Takahashi
mesh_terms: D003461:Crystallography; D004220:Disulfides / Q000737:chemistry*; D008854:Microscopy, Electron; D008982:Molybdenum / Q000737:chemistry*
chemical_list: D004220:Disulfides; D008982:Molybdenum; C082964:molybdenum disulfide