| Issue |
Europhys. Lett.
Volume 53, Number 5, March 2001
|
|
|---|---|---|
| Page(s) | 667 - 672 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2001-00203-9 | |
| Published online | 01 December 2003 | |
The spin-Peierls compound MEM(TCNQ)2: Evidence for the non-universality of the magnetic phase diagram
1
Laboratorium voor Vaste-Stoffysica en Magnetisme,
Katholieke Universiteit Leuven 3001 Leuven, Belgium
2
Low Temperatures Laboratory, General Physics
Institute - 117942 Moscow, Russia
Received:
9
October
2000
Accepted:
14
December
2000
The spin-Peierls state in the organic compound MEM(TCNQ)2 is
studied by magnetisation measurements in magnetic fields up to
50
. The possible universality of the magnetic field
vs. temperature magnetic phase diagram of spin-Peierls
systems is investigated by comparing the results on MEM(TCNQ)2
with the corresponding data for the inorganic spin-Peierls
compound 
. Although the transition line between the
uniform and the dimerised phase follows the same dependence for
both compounds, strong discrepancies are found for the phase
boundary between the dimerised and the high-field magnetic phase.
PACS: 75.30.Kz – Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.) / 75.60.Ej – Magnetization curves, hysteresis, Barkhausen and related effects / 75.50.Ee – Antiferromagnetics
© EDP Sciences, 2001
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