Regensburg 2004 – wissenschaftliches Programm

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MA: Magnetismus

MA 15: Magnetische dünne Schichten I

MA 15.8: Vortrag

Mittwoch, 10. März 2004, 17:00–17:15, H10

Pulsed Laser Deposition of Epitaxial SmCo Thin films — •A. Singh¹, R. Tamm², V. Neu¹, S. Leinert¹, S. Fähler¹, C.-G. Oertel², W. Skrotzki², L. Schultz¹, and B. Holzapfel¹ — ¹IFW Dresden, Helmholtzstr. 20, 01069 Dresden — ²Inst. f. Strukturphysik, TU Dresden, 01062 Dresden

To explore the potential of a permanent magnetic material with uniaxial anisotropy, a well aligned easy magnetisation axis is required. One way to achieve this is by growing epitaxial films on single crystal substrates. With the same aim and motivation of achieving high coercivity and remanance along a crystallographic direction, epitaxial SmCo on Cr buffered (100) and (110) MgO single crystal substrates was deposited. These films were prepared using PLD from elemental targets, and showed the epitaxial relation: MgO(001)[100]-Cr(001)[110]-SmCo(110)[001], which indicates an in plane direction of the easy axis. But besides this the easy axis also shows a 60^∘ out of plane component coming from a (1 1 16) texture. These results have been reached at by careful analysis of several pole figures measured in the texture goniometer and magnetic measurements in the SQUID. The volume fractions of these two texture components show a strong dependence on the deposition temperature. The exact contributions of these two components will be discussed in relation to the results from magnetic properties.