Berlin 2005 – wissenschaftliches Programm
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DF: Dielektrische Festkörper
DF 5: Dielektrische und ferroelektrische dünne Schichten und Nanostrukturen I
DF 5.8: Vortrag
Montag, 7. März 2005, 12:40–13:00, TU TC6
TEM and HRTEM Study Perovskite Nanoparticles Prepared by High-Energy Ball Milling — •Luu Tien Hung1,2, Do Hung Manh3, Steffen Schulze1, Vo Vong3, and Michael Hietschold1 — 1Solid Surfaces Analysis Group, Institute of Physics, Chemnitz University of Technology, Germany — 2Department of Physics, Vinh University, Vinh, Vietnam — 3Institute of Materials Science, VAST, Hanoi, Vietnam
Nanocrystalline perovskite materials are of interest for applications like catalysis and magnetoelectronics. Using a milling technique perovskites of the type AA′BB′O3 (A = La, A′ = Sr, B = Co, Mn, B′ = Zn) have been prepared from powder raw component oxides La2O3, Co3O4, ...
XRD as well as TEM are applied for sample characterization. The material is found to consist of crystallites till to 5..15 nm size which show a strong tendency to cluster. Thermomagnetization measurements suggest that these clusters are the magnetic subunits responsible for magnetization domain formation.