Sound velocity measurements of ε-FeOOH up to 24 GPa

Osamu Ikeda; Tatsuya Sakamaki; Tomonori Ohashi; Masahisa Goto; Yuji Higo; Akio Suzuki

doi:10.2465/jmps.181115b

Sound velocity measurements of ε-FeOOH up to 24 GPa

Osamu Ikeda, Tatsuya Sakamaki, Tomonori Ohashi, Masahisa Goto, Yuji Higo, Akio Suzuki

SCI - Earth Science

Research output: Contribution to journal › Letter › peer-review

7 Citations (Scopus)

Abstract

The sound velocity and density of ε-FeOOH have been simultaneously measured up to 24 GPa at room temperature using an ultrasonic pulse-echo-overlap method and a Kawai-type multi-anvil apparatus at BL04B1 in SPring-8. In the experimental pressure range, the velocity of both the P- and S-waves of ε-FeOOH was ~ 15% lower than that of an isostructural phase δ-AlOOH. The pressure dependence of the determined adiabatic bulk modulus (K_S) increased in the higher pressure range beyond 17 GPa, whereas that of the axial ratios a/c and b/c did not transition from negative to positive. A similar change of pressure dependence of KS was observed in δ- AlOOH, which is followed by a transition of proton distribution state to disordered, but the axial ratios of ε- FeOOH indicate that the transition would not occur up to 24 GPa.

Original language	English
Pages (from-to)	155-160
Number of pages	6
Journal	Journal of Mineralogical and Petrological Sciences
Volume	114
Issue number	3
DOIs	https://doi.org/10.2465/jmps.181115b
Publication status	Published - 2019

Keywords

High pressure
Hydrogen bond symmetrization
Hydrous phase
Iron oxide hydroxide
Sound velocity

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10.2465/jmps.181115b

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@article{815ed091548a48ec8597c2121b7f52ea,

title = "Sound velocity measurements of ε-FeOOH up to 24 GPa",

abstract = "The sound velocity and density of ε-FeOOH have been simultaneously measured up to 24 GPa at room temperature using an ultrasonic pulse-echo-overlap method and a Kawai-type multi-anvil apparatus at BL04B1 in SPring-8. In the experimental pressure range, the velocity of both the P- and S-waves of ε-FeOOH was ~ 15% lower than that of an isostructural phase δ-AlOOH. The pressure dependence of the determined adiabatic bulk modulus (KS) increased in the higher pressure range beyond 17 GPa, whereas that of the axial ratios a/c and b/c did not transition from negative to positive. A similar change of pressure dependence of KS was observed in δ- AlOOH, which is followed by a transition of proton distribution state to disordered, but the axial ratios of ε- FeOOH indicate that the transition would not occur up to 24 GPa.",

keywords = "High pressure, Hydrogen bond symmetrization, Hydrous phase, Iron oxide hydroxide, Sound velocity",

author = "Osamu Ikeda and Tatsuya Sakamaki and Tomonori Ohashi and Masahisa Goto and Yuji Higo and Akio Suzuki",

note = "Funding Information: This research was performed with the support of JSPS KAKENHI Grant Numbers JP15H05828, JP17H04860, and JP17K18797. The synchrotron radiation experiments were performed at the BL04B1 of SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Numbers 2018A1302 and 2018B1180). Funding Information: This research was performed with the support of JSPS KAKENHI Grant Numbers JP15H05828, JP17H04860, and JP17K18797. The synchrotron radiation experiments were performed at the BL04B1 of SPring–8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Numbers 2018A1302 and 2018B1180). Publisher Copyright: {\textcopyright} 2019 Tohoku University.",

year = "2019",

doi = "10.2465/jmps.181115b",

language = "English",

volume = "114",

pages = "155--160",

journal = "Journal of Mineralogical and Petrological Sciences",

issn = "1345-6296",

publisher = "Tohoku University",

number = "3",

}

TY - JOUR

T1 - Sound velocity measurements of ε-FeOOH up to 24 GPa

AU - Ikeda, Osamu

AU - Sakamaki, Tatsuya

AU - Ohashi, Tomonori

AU - Goto, Masahisa

AU - Higo, Yuji

AU - Suzuki, Akio

N1 - Funding Information: This research was performed with the support of JSPS KAKENHI Grant Numbers JP15H05828, JP17H04860, and JP17K18797. The synchrotron radiation experiments were performed at the BL04B1 of SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Numbers 2018A1302 and 2018B1180). Funding Information: This research was performed with the support of JSPS KAKENHI Grant Numbers JP15H05828, JP17H04860, and JP17K18797. The synchrotron radiation experiments were performed at the BL04B1 of SPring–8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Numbers 2018A1302 and 2018B1180). Publisher Copyright: © 2019 Tohoku University.

PY - 2019

Y1 - 2019

N2 - The sound velocity and density of ε-FeOOH have been simultaneously measured up to 24 GPa at room temperature using an ultrasonic pulse-echo-overlap method and a Kawai-type multi-anvil apparatus at BL04B1 in SPring-8. In the experimental pressure range, the velocity of both the P- and S-waves of ε-FeOOH was ~ 15% lower than that of an isostructural phase δ-AlOOH. The pressure dependence of the determined adiabatic bulk modulus (KS) increased in the higher pressure range beyond 17 GPa, whereas that of the axial ratios a/c and b/c did not transition from negative to positive. A similar change of pressure dependence of KS was observed in δ- AlOOH, which is followed by a transition of proton distribution state to disordered, but the axial ratios of ε- FeOOH indicate that the transition would not occur up to 24 GPa.

AB - The sound velocity and density of ε-FeOOH have been simultaneously measured up to 24 GPa at room temperature using an ultrasonic pulse-echo-overlap method and a Kawai-type multi-anvil apparatus at BL04B1 in SPring-8. In the experimental pressure range, the velocity of both the P- and S-waves of ε-FeOOH was ~ 15% lower than that of an isostructural phase δ-AlOOH. The pressure dependence of the determined adiabatic bulk modulus (KS) increased in the higher pressure range beyond 17 GPa, whereas that of the axial ratios a/c and b/c did not transition from negative to positive. A similar change of pressure dependence of KS was observed in δ- AlOOH, which is followed by a transition of proton distribution state to disordered, but the axial ratios of ε- FeOOH indicate that the transition would not occur up to 24 GPa.

KW - High pressure

KW - Hydrogen bond symmetrization

KW - Hydrous phase

KW - Iron oxide hydroxide

KW - Sound velocity

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M3 - Letter

AN - SCOPUS:85073752862

SN - 1345-6296

VL - 114

SP - 155

EP - 160

JO - Journal of Mineralogical and Petrological Sciences

JF - Journal of Mineralogical and Petrological Sciences

IS - 3

ER -

Sound velocity measurements of ε-FeOOH up to 24 GPa

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Keywords

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