Magnetite: Raman study of the high-pressure and low-temperature effects

L. V. Gasparov; D. Arenas; K. Y. Choi; G. Güntherodt; H. Berger; L. Forro; G. Margaritondo; V. V. Struzhkin; R. Hemley

doi:10.1063/1.1854476

Magnetite: Raman study of the high-pressure and low-temperature effects

L. V. Gasparov, D. Arenas, K. Y. Choi, G. Güntherodt, H. Berger, L. Forro, G. Margaritondo, V. V. Struzhkin, R. Hemley

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Abstract

We report the results of a low-temperature (300 K-15 K) high-pressure (up to 22 GPa) Raman study of the Verwey transition in magnetite (Fe3 O4). 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 d TV dP is found to be -5.16±1.19 KGPa. Such a decrease is substantially larger than the one predicted by the mean-field Coulomb interaction model of the transition.

Original language	English
Article number	10A922
Journal	Journal of Applied Physics
Volume	97
Issue number	10
DOIs	https://doi.org/10.1063/1.1854476
State	Published - 15 May 2005
Externally published	Yes

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title = "Magnetite: Raman study of the high-pressure and low-temperature effects",

abstract = "We report the results of a low-temperature (300 K-15 K) high-pressure (up to 22 GPa) Raman study of the Verwey transition in magnetite (Fe3 O4). 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 d TV dP is found to be -5.16±1.19 KGPa. Such a decrease is substantially larger than the one predicted by the mean-field Coulomb interaction model of the transition.",

author = "Gasparov, \{L. V.\} and D. Arenas and Choi, \{K. Y.\} and G. G{\"u}ntherodt and H. Berger and L. Forro and G. Margaritondo and Struzhkin, \{V. V.\} and R. Hemley",

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T1 - Magnetite

T2 - Raman study of the high-pressure and low-temperature effects

AU - Gasparov, L. V.

AU - Arenas, D.

AU - Choi, K. Y.

AU - Güntherodt, G.

AU - Berger, H.

AU - Forro, L.

AU - Margaritondo, G.

AU - Struzhkin, V. V.

AU - Hemley, R.

PY - 2005/5/15

Y1 - 2005/5/15

N2 - We report the results of a low-temperature (300 K-15 K) high-pressure (up to 22 GPa) Raman study of the Verwey transition in magnetite (Fe3 O4). 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 d TV dP is found to be -5.16±1.19 KGPa. Such a decrease is substantially larger than the one predicted by the mean-field Coulomb interaction model of the transition.

AB - We report the results of a low-temperature (300 K-15 K) high-pressure (up to 22 GPa) Raman study of the Verwey transition in magnetite (Fe3 O4). 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 d TV dP is found to be -5.16±1.19 KGPa. Such a decrease is substantially larger than the one predicted by the mean-field Coulomb interaction model of the transition.

UR - https://www.scopus.com/pages/publications/20944444056

U2 - 10.1063/1.1854476

DO - 10.1063/1.1854476

M3 - Article

AN - SCOPUS:20944444056

SN - 0021-8979

VL - 97

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 10

M1 - 10A922

ER -

Magnetite: Raman study of the high-pressure and low-temperature effects

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