Low-temperature magnetic investigation of ankerite
- Autor(en)
- Gerfried Hilscher, Peter Franz Rogl, Josef Zemann, Theodoros Ntaflos
- Abstrakt
The magnetism of a very Fe-rich natural ankerite, Ca1.00(Fe0.68Mg0.23Mn0.04Ca 0.04)(CO3)2, was investigated from 300 K down to 1.7 K. While the crystallographically related siderite, FeCO3, orders antiferromagnetically below ca. 38 K, static long-range magnetic order does not appear for ankerite down to 1.7 K. The main cause for this different behaviour is tentatively thought to be due to the geometries of the Fe arrangements in the two minerals: In siderite each Fe has six Fe neighbours at 3.73 A° in the form of an elongated octahedron, in (ideal) ankerite each Fe has again six Fe neighbours, but now at 4.83 A° and in the form of a regular coplanar hexagon. Œ 2005 E. Schweizerbart'sche Verlagsbuchhandlung.
- Organisation(en)
- Institut für Physikalische Chemie, Institut für Mineralogie und Kristallographie
- Externe Organisation(en)
- Technische Universität Wien
- Journal
- European Journal of Mineralogy: an international journal of mineralogy, geochemistry and related sciences
- Band
- 17
- Seiten
- 103-105
- Anzahl der Seiten
- 3
- ISSN
- 0935-1221
- Publikationsdatum
- 2005
- Peer-reviewed
- Ja
- ÖFOS 2012
- 105116 Mineralogie, 1040 Chemie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/3d8ec9a9-9396-4849-97fb-e01196f7f19a