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Effect of externally applied pressure on the magnetic behavior of Cu2Te2O5(BrxCl1-x)(2)
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Crowe, S. J. , Lees, Martin R., Paul, Don McK., Bewely, R. I. , Taylor, J., McIntyre, G., Zaharko, O. and Berger, H. (2006) Effect of externally applied pressure on the magnetic behavior of Cu2Te2O5(BrxCl1-x)(2). Physical Review B (Condensed Matter and Materials Physics), Volume 73 (Number 14). doi:10.1103/PhysRevB.73.144410 ISSN 1098-0121.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.73.144410
Abstract
The effect of externally applied pressure on the magnetic behavior of Cu2Te2O5(BrxCl1-x)(2) with x=0, 0.73, and 1, is investigated by a combination of magnetic susceptibility, neutron diffraction, and neutron inelastic scattering measurements. The magnetic transition temperatures of the x=0 and 0.73 compositions are observed to increase linearly with increasing pressure at a rate of 0.23(2) and 0.04(1) K/kbar, respectively. However, the bromide shows contrasting behavior with a large suppression of the transition temperature under pressure, at a rate of -0.95(9) K/kbar. In neutron inelastic scattering measurements of Cu2Te2O5Br2 under pressure only a small change to the ambient pressure magnetic excitations were observed. A peak in the density of states was seen to shift from similar to 5 meV in ambient pressure to similar to 6 meV under an applied pressure of 11.3 kbar, which was associated with an increase in the overall magnetic coupling strength.
Item Type: | Journal Article | ||||||
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Subjects: | Q Science > QC Physics | ||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||||
Publisher: | American Physical Society | ||||||
ISSN: | 1098-0121 | ||||||
Official Date: | 7 April 2006 | ||||||
Dates: |
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Volume: | Volume 73 | ||||||
Number: | Number 14 | ||||||
Number of Pages: | 6 | ||||||
DOI: | 10.1103/PhysRevB.73.144410 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access |
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