In:
Journal of Applied Physics, AIP Publishing, Vol. 97, No. 10 ( 2005-05-15)
Kurzfassung:
We report the results of a low-temperature (300K–15K) high-pressure (up to 22GPa) Raman study of the Verwey transition in magnetite (Fe3O4). We use additional Raman modes observed below the Verwey transition to determine how the transition temperature changes with the quasihydrostatic pressure. Increase of the pressure results in the linear decrease of the Verwey transition temperature, with no discontinuity. The corresponding pressure coefficient dTV∕dP is found to be −5.16±1.19K∕GPa. Such a decrease is substantially larger than the one predicted by the mean-field Coulomb interaction model of the transition.
Materialart:
Online-Ressource
ISSN:
0021-8979
,
1089-7550
Sprache:
Englisch
Verlag:
AIP Publishing
Publikationsdatum:
2005
ZDB Id:
220641-9
ZDB Id:
3112-4
ZDB Id:
1476463-5
