We report on the epitaxial thin film growth of an air-sensitive hydride, lithium hydride (LiH), using pulsed laser deposition (PLD). We first synthesized a dense LiH target, which is key for PLD growth of high-quality hydride films. Then, we obtained epitaxial thin films of -oriented LiH on a MgO(100) substrate at 250°C under a hydrogen pressure of 1.3 × 10-2 Pa. Atomic force microscopy revealed that the film demonstrates a Stranski-Krastanov growth mode and that the film with a thickness of ∼10 nm has a good surface flatness, with root-mean-square roughness RRMS of ∼0.4 nm.
ASJC Scopus subject areas
- Materials Science(all)