Nucleation and growth of c-parallel grains in co-evaporated SmBa2Cu3Oy films

Autor: H.M. Appelboom, F. Tuinstra, B. Ilge, B. Stäuble-Pümpin, V.C. Matijasevic, J.G. Wen, P.M.L.O. Scholte, J. Venvik, Henny W. Zandbergen, W.J.A.M. Peterse, J.E. Mooij
Rok vydání: 1994
Předmět:
Zdroj: Scopus-Elsevier
ISSN: 0921-4534
DOI: 10.1016/0921-4534(94)91563-6
Popis: Co-evaporated SmBa 2 Cu 3 O y thin films were investigated by means of Scanning Tunnelling Microscopy (STM), x-ray diffraction and Transmission Electron Microscopy (TEM). All films were predominantly oriented with their c -axis perpendicular ( c ⊥) to the substrate, with small fractions of c // grains. Although certain films seem to display a full coverage with c // material when imaged by STM, our study does not support the existence of a critical thickness at which c ⊥ growth switches to c // growth. Furthermore, it was found that the volume fraction of c // to c ⊥ material increases with increasing supersaturation, indicating that kinetic factors are important to understand the nucleation and growth of c // grains.
Databáze: OpenAIRE