Mixed titania-lead oxide seed layers for PZT growth on Pt(111): a study on nucleation, texture and properties

Growth and properties of sputter in situ sputter deposited Pb(Z,Ti)O-3 (PZT) thin films have been studied on (111)-textured Pt electrodes as a function of seed layers of the type (TiO2)(x)(PbO)(y). The PZT process was run with a limited lead excess resulting in pyrochlore nucleation on bare Pt electrodes. When the electrode was covered with a dense seed layer, perovskite was obtained everywhere. Ti rich seed layers yielded (111)-textured PZT even for very thin seed layers. Pb rich seed layers nucleated as PbTiO3{100} and gave rise to (100)-textured PZT. In an intermediate zone, the major perovskite orientations (100), (110) and (111) have been found together With pyrochlore for a small seed layer thickness. In this zone, the seed layer nucleates in islands leaving bare Pt spots. The intermediate region is a transition region between (111) seeds and (100) seeds. The latter exhibit diverging critical sizes at a given critical flux ratio, leading to large nuclei and bare Pt. (C) 2003 Elsevier Ltd. All rights reserved.


Published in:
Journal of the European Ceramic Society, 24, 6, 1593-1596
Year:
2004
ISSN:
0955-2219
Keywords:
Note:
Muralt, P Swiss Fed Inst Technol, EPFL, Ceram Lab, Fac Engn, CH-1015 Lausanne, Switzerland Swiss Fed Inst Technol, EPFL, Ceram Lab, Fac Engn, CH-1015 Lausanne, Switzerland
778NN
Times Cited:8
Cited References Count:8
Other identifiers:
Laboratories:




 Record created 2006-08-21, last modified 2018-03-17


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