Issue |
J. Phys. IV France
Volume 114, April 2004
|
|
---|---|---|
Page(s) | 629 - 631 | |
DOI | https://doi.org/10.1051/jp4:2004114150 |
J. Phys. IV France 114 (2004) 629
DOI: 10.1051/jp4:2004114150
Two hybrid organometallic-inorganic layered magnets from the series
[ Z
Cp
*2] [ M
M
(ox)
3]
studied with
SR
T. Lancaster1, 1, S.J. Blundell1, F.L. Pratt2, E. Coronado3 and J.-R. Galán-Mascarós3
1 Clarendon Laboratory, Oxford University Department of Physics, Parks Road, Oxford OX1 3PU, UK
2 ISIS Muon Facility, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, UK
3 Departamento de Química Inorgánica, Universidad de Valencia, Dr. Moliner 50, 46100 Burjasot, Spain
Abstract
We present zero-field muon spin relaxation (ZF-
SR)
measurements on two
examples of a new series of hybrid organometallic-inorganic layered magnets,
namely ferromagnetic [ FeCp
*2] [ MnCr(ox)
3] and ferrimagnetic
[ CoCp
*2] [ FeFe(ox)
3]
(where ox = oxalate and Cp
* = pentame- thylcyclopentadienyl).
Both materials
show multi-component
muon spin precession signals characteristic of
quasistatic magnetic fields at several distinct muon sites. The temperature
dependence of the precession frequencies allow critical exponents to be
extracted. Possible muon sites are discussed on the basis of dipole field
calculations.
Key words. Muon-spin relaxation, layered magnets, oxalate complexes.
© EDP Sciences 2004