S. Ghannadzadeh
Evolution of magnetic interactions in a pressure-induced Jahn-Teller driven magnetic dimensionality switch
Ghannadzadeh, S.; Möller, J.S.; Goddard, P.A.; Lancaster, T.; Xiao, F.; Blundell, S.J.; Maisuradze, A.; Khasanov, R.; Manson, J.L.; Tozer, S.W.; Graf, D.; Schlueter, J.A.
Authors
J.S. Möller
P.A. Goddard
Professor Tom Lancaster tom.lancaster@durham.ac.uk
Professor
F. Xiao
S.J. Blundell
A. Maisuradze
R. Khasanov
J.L. Manson
S.W. Tozer
D. Graf
J.A. Schlueter
Abstract
We present the results of high-field magnetization and muon-spin relaxation measurements on the coordination polymer CuF 2 (H 2 O) 2 (pyrazine) in pressures up to 22.5 kbar. We observe a transition from a quasi-two-dimensional to a quasi-one-dimensional antiferromagnetic phase at 9.1 kbar, driven by a rotation of the Jahn-Teller axis. Long-range antiferromagnetic ordering is seen in both regimes, as well as a phase separation in the critical pressure region. The magnetic dimensionality switching as pressure is increased is accompanied by a halving of the primary magnetic exchange energy J and a fivefold decrease in the ordering temperature T N . J decreases gradually with pressure in the two-dimensional phase, and then increases in the one-dimensional regime. We relate both effects to the changes in the crystal structure with applied pressure.
Citation
Ghannadzadeh, S., Möller, J., Goddard, P., Lancaster, T., Xiao, F., Blundell, S., …Schlueter, J. (2013). Evolution of magnetic interactions in a pressure-induced Jahn-Teller driven magnetic dimensionality switch. Physical review B, 87(24), Article 241102. https://doi.org/10.1103/physrevb.87.241102
Journal Article Type | Article |
---|---|
Publication Date | Jun 1, 2013 |
Deposit Date | Jul 2, 2013 |
Publicly Available Date | Jan 24, 2014 |
Journal | Physical Review B |
Print ISSN | 1098-0121 |
Electronic ISSN | 1550-235X |
Publisher | American Physical Society |
Peer Reviewed | Peer Reviewed |
Volume | 87 |
Issue | 24 |
Article Number | 241102 |
DOI | https://doi.org/10.1103/physrevb.87.241102 |
Public URL | https://durham-repository.worktribe.com/output/1472959 |
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Copyright Statement
© 2013 American Physical Society
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