A study of the parameters influencing the microstructure of thick La2Zr2O7 films

✍ Scribed by V. Cloet; P. Lommens; R. Hühne; K. De Buysser; S. Hoste; I. Van Driessche

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 896 KB
• Volume: 325
• Category: Article
• ISSN: 0022-0248
• DOI: 10.1016/j.jcrysgro.2011.04.029

✦ Synopsis

Thick La 2 Zr 2 O 7 (LZO) layers were produced via a water-based sol-gel route. All layers were analyzed indepth by XRD, pole figures and transmission electron microscopy. Well-textured thick layers (120 nm) could be obtained by adjusting the heat treatment and introducing a LZO seed layer (20 nm). The overall quality of the LZO layers greatly improved by the introduction of seed layers. Nevertheless, nanovoids were found in the thick LZO layers. A tentative explanation for parameters influencing the origin and development of the nanovoids is presented, based on TEM observations.