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DPG

Regensburg 2004 – scientific programme

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MA: Magnetismus

MA 13: Poster:Schichten(1-23),Spinabh.Trsp(24-41),Exch.Bias(42-56),Spindyn.(57-67),Mikromag.(68-76),Partikel(77-90),Spinelektr.(91-97),Elektr.Theo.(98-99),Mikromag+PhasÜ+Aniso.(100-105),Magn.Mat.(106-118),Messmethod.(119-121),Obflm.+Abbverf.(122-123)

MA 13.117: Poster

Tuesday, March 9, 2004, 15:00–19:00, Bereich A

The effect of Zn and Cr doping on structural and magnetic properties of Sr2FeReO6 — •A. Jung, I. Bonn, J. Ensling, V. Ksenofontov, C. Felser, and W. Tremel — Johannes Gutenberg - Universität, Institut für Anorganische Chemie und Analytische Chemie, 55099 Mainz

Magnetic properties of doped double perovskites with formula Sr2Fe1−xMxReO6 (M = Zn, Cr) strongly correlate with their structure. The relation of ionic radii of iron and substituting transitional metals is a decisive factor which determines the cubic or tetragonal modifications of doped Sr2FeReO6. We report on the magnetic and structural properties of solid solutions Sr2Fe1−xMxReO6 in a wide range of concentrations 0 ≤ x ≤ 1. 57Fe Mössbauer spectroscopic studies revealed that the relation of amount of Fe2+ and Fe3+ ions is another important factor influencing the structure of these compounds. Magnetic properties of doped double perovskites are interpreted by means of FLAPW band structure calculations using the WIEN97 software package.

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