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<p>Dear colleagues,</p>
<p>It is my pleasure to invite you to today's Seminar of Institute
of Physics of Charles University, entitled:</p>
<p><b>Fabrication of functional thin-film materials with a complex
composition by pulsed laser deposition</b></p>
<p>Speaker: <a href="https://www.fzu.cz/lide/ing-jan-lancok-phd">Ing.
Ján Lančok, Ph.D.</a><br>
</p>
<p>Time: <b>Tuesday 19.10. from 14:00</b> <br>
</p>
<p> Place: Seminar room of Institute of Physics F285 (atelier) ,
second floor, Ke Karlovu 5, Prague</p>
<p> </p>
<p><i>Abstract: The first experiment with Pulsed Laser Deposition
(PLD) was carried out few years after the discovery of the first
laser (1965) [1], but the method remained little known till the
late 1980's Since 1987 when Dijkkamp et al [2] published their
ground breaking paper on pulsed laser deposition (PLD) of
Y1Ba2Cu3O7−x (YBCO) there has been enormous interest and growth
in the use of this unique physical vapour deposition (PVD)
process. In principal, PLD belongs in the big PVD method, along
with Molecular Beam Epitaxy and different modification of
evaporation and sputtering. Conceptually and experimentally PLD
is an extremely simple method, based on the plasma creation by
means of focused pulsed laser beam, Fig. 1. This evaporation
becomes nonequilibristic. Due to this nonequillibrium the PLD
has been very successful in the fabrication of complicated oxide
structures, whose constituents may have vapour pressures that
differ by 106. Film growth can be carried out in a reactive
environment containing any kinds of gas with/or without plasma
excitation. Due to this the PLD method is very flexible and
allows successful preparation of thin film from different kind
of materials [3,4].<br>
In the presentation the fundamentals of PLD, physical processes
occurring during the thin films fabrication and comparison
between another deposition techniques will be given. The
attention will be focused on the description of the fabrication
of following materials:<br>
• high Tc superconductors YBCO<br>
• ferroelectric perovskite materials SrTiO3<br>
• multiferroic materials BiFeO3 and Ɛ-Fe2O3<br>
• oxides and composites for chemical sensors<br>
• copper halides and oxides<br>
• biocompatabile ceramics<br>
For many materials, PLD has been established as a technique
offering superior film properties in comparison to films
deposited by other physical vapor-deposition techniques.<br>
<br>
References<br>
[1] Smith H M and Turner A G 1965 Appl. Opt. 4 147–8 <br>
[2] Dijkkamp D et. all. 1987 Appl. Phys. Lett. 51 619<br>
[3] Chrisey D B and Hubler G K (ed) 1994 Pulsed Laser Deposition
of Thin Films (New York: Wiley) <br>
[4] Eason R (ed) 2007 Pulsed Laser Deposition of Thin Films (New
York: Wiley)<br>
</i></p>
With my best regards
<p> Jaroslav Hamrle</p>
<br>
<p>-- </p>
<pre class="moz-signature" cols="72">------------------------------------------------------------------
Mgr. Jaroslav Hamrle, Ph.D.
Institute of Physics, room F232
Faculty of Mathematics and Physics
Charles University
Ke Karlovu 5
121 16 Prague
Czech Republic
tel: +420-95155 1340
email: <a class="moz-txt-link-abbreviated" href="mailto:hamrle@karlov.mff.cuni.cz">hamrle@karlov.mff.cuni.cz</a>
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