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- Title
Interaction between laser beam and target in pulsed laser deposition: laser fluence and ambient gas effects.
- Authors
Chen, X.Y.; Liu, Z.G.
- Abstract
Abstract. The most prominent phenomena on the target surface induced by laser irradiation in pulsed laser deposition is the formation of conical morphologies in the irradiated area. The conical morphologies formed under different laser fluences and the ambient oxygen pressures in KrF laser ablation of Pb(Zr[sub 0.53]Ti[sub 0.47])O[sub 3] were studied in detail by using scanning electron microscopy. The results indicate that, depending on the melting extent of the irradiated surface, there are two kinds of cones: one type with well-defined cone tip and cone body and the other having only a cone tip. Pb is very deficient in cone tip. The gas ambient pressure plays a remarkable role in the laser-target interaction. These results are interpreted by employing the impurity shielding mechanism and the surface instability mechanism.
- Subjects
PULSED laser deposition; IRRADIATION; LASER ablation; SCANNING electron microscopy
- Publication
Applied Physics A: Materials Science & Processing, 1999, Vol 69, Issue 7, pS523
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s003390051460