Low-temperature magnetic investigation of ankerite
- Author(s)
- Gerfried Hilscher, Peter Franz Rogl, Josef Zemann, Theodoros Ntaflos
- Abstract
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(s)
- Department of Physical Chemistry, Department of Mineralogy and Crystallography
- External organisation(s)
- Technische Universität Wien
- Journal
- European Journal of Mineralogy: an international journal of mineralogy, geochemistry and related sciences
- Volume
- 17
- Pages
- 103-105
- No. of pages
- 3
- ISSN
- 0935-1221
- Publication date
- 2005
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105116 Mineralogy, 1040 Chemistry
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/3d8ec9a9-9396-4849-97fb-e01196f7f19a