Electron-beam induced phase transformation in β-Ag2Se thin films

✍ Scribed by Yin, Kuibo ;Xia, Yidong ;Liu, Zhiguo ;Yin, Jiang ;Sun, Litao

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 341 KB
• Volume: 209
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.201026549

✦ Synopsis

Abstract

The microstructure of room‐temperature silver selenide thin films prepared by pulsed laser deposition (PLD) was investigated by transmission electron microscope (TEM). Two phases existed in room‐temperature silver selenide. One was orthorhombic phase (O) and the other was identified as monoclinic phase (M) by TEM tilting experiments. The monoclinic phase can transform to orthorhombic phase along [100]~M~ direction under the irradiation of electron beam. Thermal stress induced by the difference of coefficient of thermal expansion (CTE) of Ag~2~Se and Cu gridding/NaCl substrate is thought to play an important role in this phase transformation.