| Issue |
Europhys. Lett.
Volume 63, Number 3, August 2003
|
|
|---|---|---|
| Page(s) | 374 - 380 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2003-00542-5 | |
| Published online | 01 November 2003 | |
Evidence for the coexistence of low-dimensional
magnetism and long-range order in 
1
Institut für Festkörperphysik, Technische Universität Dresden 01062 Dresden, Germany
2
Mineralogisch-Petrologisches Institut, Universität Bonn - 53115 Bonn, Germany
3
Tata Institute of Fundamental Research - Homi Bhabha Road, Mumbai-400 005, India
Received:
5
February
2003
Accepted:
5
June
2003
We report the results of neutron powder diffraction studies on
the spin-chain compound in the temperature
range from 3 to 293
. Bragg peaks due to magnetic ordering
start appearing below about 100. The most interesting
observation is that there is a diffuse magnetic peak superimposed
over the strongest magnetic Bragg peak. The diffuse magnetic
intensity is observed below as well as above 100. This
finding provides a new insight into the physics of this compound
as though the low-dimensional magnetic interaction coexists with
long-range magnetic order —a novel situation among
quasi–one-dimensional oxides.
PACS: 61.12.Ld – Neutron diffraction / 75.25.+z – Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source X-ray scattering, etc.) / 75.40.-s – Critical-point effects, specific heats, short-range order
© EDP Sciences, 2003
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