Mössbauer effect of57Co in LiTaO3 — Effects of a variety of heat treatments |
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| Authors: | G Andler H Engelmann I Dézsi U Gonser |
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| Institution: | 1. FB 12.1 Werkstoffwissenschaften, Universit?t des Saarlandes, Bau 22, D-6600, Saarbrücken, F.R. Germany
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| Abstract: | LiTaO3 single crystals were doped with57Co. Heat treatments of the crystals in the various atmospheres (Ar, Ar/H2 etc.) very sensitively influenced the charge states of iron formed after the EC of57Co. Fe2+ Fe3+ and metallic clusters are formed depending on the treatments in the various atmospheres. The observed effects were found
reversible by changing the reducing and oxidising atmospheres. |
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