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Publications in Scientific Journals:

G. Hilscher, P. Rogl, J. Zemann, T. Ntaflos:
"Low-temperature magnetic investigation of ankerite";
European Journal of Mineralogy, 17 (2005), 103 - 106.



English abstract:
Low-temperature magnetic investigation of ankerite

Authors: Hilscher, Gerfried; Rogl, Peter; Zemann, Josef; Ntaflos, Theodoros

Source: European Journal of Mineralogy, Volume 17, Number 1, January 2005, pp. 103-106(4)

Publisher: E. Schweizerbart Science Publishers

Abstract:

The magnetism of a very Fe-rich natural ankerite, Ca1.00(Fe0.68Mg0.23Mn0.04Ca0.04)(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 Å in the form of an elongated octahedron, in (ideal) ankerite each Fe has again six Fe neighbours, but now at 4.83 Å and in the form of a regular coplanar hexagon.

Keywords: ANKERITE; ANTI-FERROMAGNETIC ORDERING; MAGNETIC SUSCEPTIBILITY

DOI: 10.1127/0935-1221/2005/0017-0103


Online library catalogue of the TU Vienna:
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05938275

Electronic version of the publication:
http://dx.doi.org/10.1127/0935-1221/2005/0017-0103


Created from the Publication Database of the Vienna University of Technology.