Issue |
Europhys. Lett.
Volume 65, Number 1, January 2004
|
|
---|---|---|
Page(s) | 116 - 122 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2003-10059-5 | |
Published online | 01 December 2003 |
Giant Keplerate molecule
—the first octopole magnet
1
Physics Department, Moscow Lomonosov State University - 119889 Moscow, Russia
2
General Physics Institute of RAS - 119991 Moscow, Russia
Corresponding author: smischenko@yahoo.com
Received:
8
July
2003
Accepted:
30
October
2003
The multipole expansion technique is applied to one of the largest
magnetic molecules, . The molecule's dipole, toroid
and quadrupole magnetic moments are equal to zero (in the absence
of magnetic field) so the multipole expansion starts from the
octopole moment. Probably, the
molecule is the most
symmetrical magnetic body synthesized so far. The magnetization
process is considered theoretically in different geometries. Some
components of the octopole moment experience a jump while the
magnetization rises linearly up to its saturation value. An
elementary octopole moment consisting of four magnetic dipoles is
proposed as a hint for designing of an experiment for the measurement
of octopole magnetic-moment components.
PACS: 75.50.Xx – Molecular magnets / 75.10.Hk – Classical spin models
© EDP Sciences, 2004
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