Dresden 2009 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 14: Poster Ib: Magnetic Materials (1-14); Micro Magnetism/Computational Mag. (15-17); Surface Magnetism (18-22); Spin Structures/Phase Transitions (23-25)

MA 14.3: Poster

Dienstag, 24. März 2009, 10:15–13:00, P1B

EBSD analysis of the microtexture of Ba-hexaferrite samples — •Anjela Koblischka-Veneva¹, Michael R. Koblischka², Jörg Schmauch³, Yajie Chen⁴, and Vincent G. Harris⁴ — ¹Institute of Functional Materials, Saarland University, Campus C 6 3, D-66123 Saarbrücken, Germany — ²Experimental Physics, Saarland University, Campus C 6 3, D-66123 Saarbrücken, Germany — ³Technical Physics, Saarland University, Campus D 2 2, D-66123 Saarbrücken, Germany — ⁴Department of Electrical and Computer Engineering, and the Center for Microwave Magnetic Materials and Integrated Circuits, Northeastern University, Boston, Massachusetts 02115, USA

The microtexture of differently prepared Ba-hexaferrite samples is investigated by means of electron backscatter diffraction (EBSD). Kikuchi patterns are obtained with a high image quality, enabling a spatial resolution of the EBSD maps of about 20 nm. The spatially highly resolved EBSD mappings provide additional information (individual grain orientation, misorientation angles, grain size distribution) as compared to the standard analysis techniques, which can contribute to an optimization of the growth process. Furthermore, as the crystallographic orientation of each grain is known, an exact analysis of the grain aspect ratio becomes possible which provides further insight to the microstructural dependence of the magnetic properties of ferrites.