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[Fizinfo] RMKI CMRC szeminarium


Chronological Thread 
  • From: "Dezsi Istvan" <dezsi AT rmki.kfki.hu>
  • To: <Fizinfo AT lists.kfki.hu>
  • Subject: [Fizinfo] RMKI CMRC szeminarium
  • Date: Wed Mar 26 17:20:01 2003
  • List-archive: <http://sunserv.kfki.hu/pipermail/fizinfo/>
  • List-id: ELFT HRAD <fizinfo.lists.kfki.hu>

MEGHIVO
az RMKI CMRC szeminariumara, amelyet

Dr. Werner Schindler
(Institut fur Hochfrequenztechnik und Quantenelektronik,
Universitat Karlsruhe)
tart
"Electrodeposition versus MBE Growth of Ultrathin Magnetic Films and
Nanostructures"
cimmel.
Helye: RMKI Tanacsterem
KFKI, 1121 Budapest, Konkoly Thege M. ut 29-33
III. epulet 2. emelet.
Ideje: 2003. marcius 31. hetfo, 14 ora.
Minden erdeklodot szivesen latunk.
Dezsi Istvan

Abstract:
The talk will give an overview of the growth of ultrathin films and
low-dimensional nanostructures with electrodeposition and molecular beam
epitaxy (MBE). Whereas ultrathin films can be prepared nicely with both
techniques, there are certain restrictions in preparing nanostructures with
evaporation techniques.

Electrodeposited ultrathin films are growing in very high quality on lattice
matched substrates as seen by the pseudomorphic Co growth on Cu(111) which is
found still beyond a film thickness of 10 ML.
Using magnetic measurements and surface X-ray diffraction simultaneously,
very important correlations between structure and magnetism can be found as
for example the fcc-bcc phase transition in ultrathin Fe films which can be
monitored in situ in dependence of the Fe film thickness.

Single metallic and magnetic nanostructures can be favourably prepared by our
electrochemical process of localized electrodeposition using the tip of a
scanning probe microscope (SPM) as a nanoelectrode. Localized growth in
evaporation processes is very difficult to achieve, and requires usually
substrate superstructures like surface reconstructions. Additionally, since a
solely electrochemical growth avoids the formation of defects in the
nanostructures, this process is best suited to generate nanostructures which
show their intrinsic physical and chemical properties. However, whereas the
investigation of ultrathin films can be done with well established integral
techniques, in situ measurements on nanostructures are still a challenge for
researchers, and with respect to magnetic properties at present not yet
feasible.

  • [Fizinfo] RMKI CMRC szeminarium, Dezsi Istvan, 03/26/2003

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