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New Layered Manganese Oxychlorides

Published online by Cambridge University Press:  01 February 2011

Christopher S. Knee  and
Mark T. Weller
Christopher S. Knee
Affiliation:
Inorganic Materials Group Dept. of Chemistry University of Southampton SO17 1BJ UK
Mark T. Weller
Affiliation:
Inorganic Materials Group Dept. of Chemistry University of Southampton SO17 1BJ UK
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Abstract

The synthesis, structure and preliminary magnetic characteristics of the new layered manganese oxide chlorides, Sr2MnO3Cl and Sr4Mn3O8-yCl2 are reported. Sr2MnO3Cl adopts a K2NiF4 type structure with sheets of MnO5 square based pyramids linked through oxygen and separated by SrCl layers; it is the end member of a new family of Ruddlesden-Popper type manganese oxide halides which includes the 3-layer member Sr4Mn3O8-yCl2. Magnetic susceptibility measurements reveal antiferromagnetic transitions at 95 K and 90 K for Sr2MnO3Cl and Sr4Mn3O8-yCl2 respectively. These materials demonstrate the extension of mixed anion chemistry to manganese and will increase flexibility in designing and controlling oxidation states of new GMR materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 718: Symposium D – Perovskite Materials , 2002 , D7.33
Copyright
Copyright © Materials Research Society 2002

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References

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