Ultrasonic observations of elasticity changes across phase transformations in MgSiO3 pyroxenes

Hui-Chen Kung, Baosheng Li, Robert C. Liebermann

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Using ultrasonic interferometry in conjunction with synchrotron X-radiation techniques in a high-pressure, multi-anvil apparatus, the elastic behavior of MgSiO3 pyroxene has been continuously monitored as the specimens undergo phase transformations from the orthoenstatite (OEN) to the high-pressure clinoenstatite phase (HP-CEN) and from HP-CEN to the low-pressure clinoenstatite phase (LP-CEN). In the former case, elastic softening and amplitude attenuation is observed for both compresssional (P) and shear (S) waves when the pressure exceeds 9 GPa at room temperature, which we suggest is associated with a transition to a metastable phase intermediate between OEN and HP-CEN. In the latter case, both P and S wave velocities decrease rapidly as the back-transformation from HP-CEN to LP-CEN occurs on decrease of pressure below 4 GPa at room temperature; this is accompanied by an increase in attenuation of the P waves in the specimen, but not the S waves.

Original languageEnglish
Pages (from-to)2051-2055
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume67
Issue number9-10
DOIs
Publication statusPublished - 2006 Sep 1

Fingerprint

pyroxenes
phase transformations
Elasticity
elastic properties
ultrasonics
Ultrasonics
Phase transitions
S waves
P waves
low pressure
attenuation
room temperature
anvils
softening
interferometry
synchrotrons
shear
Metastable phases
Synchrotrons
Interferometry

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

@article{4faa76167ceb4c19befedf9403d06631,
title = "Ultrasonic observations of elasticity changes across phase transformations in MgSiO3 pyroxenes",
abstract = "Using ultrasonic interferometry in conjunction with synchrotron X-radiation techniques in a high-pressure, multi-anvil apparatus, the elastic behavior of MgSiO3 pyroxene has been continuously monitored as the specimens undergo phase transformations from the orthoenstatite (OEN) to the high-pressure clinoenstatite phase (HP-CEN) and from HP-CEN to the low-pressure clinoenstatite phase (LP-CEN). In the former case, elastic softening and amplitude attenuation is observed for both compresssional (P) and shear (S) waves when the pressure exceeds 9 GPa at room temperature, which we suggest is associated with a transition to a metastable phase intermediate between OEN and HP-CEN. In the latter case, both P and S wave velocities decrease rapidly as the back-transformation from HP-CEN to LP-CEN occurs on decrease of pressure below 4 GPa at room temperature; this is accompanied by an increase in attenuation of the P waves in the specimen, but not the S waves.",
author = "Hui-Chen Kung and Baosheng Li and Liebermann, {Robert C.}",
year = "2006",
month = "9",
day = "1",
doi = "10.1016/j.jpcs.2006.05.028",
language = "English",
volume = "67",
pages = "2051--2055",
journal = "Journal of Physics and Chemistry of Solids",
issn = "0022-3697",
publisher = "Elsevier Limited",
number = "9-10",

}

Ultrasonic observations of elasticity changes across phase transformations in MgSiO3 pyroxenes. / Kung, Hui-Chen; Li, Baosheng; Liebermann, Robert C.

In: Journal of Physics and Chemistry of Solids, Vol. 67, No. 9-10, 01.09.2006, p. 2051-2055.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ultrasonic observations of elasticity changes across phase transformations in MgSiO3 pyroxenes

AU - Kung, Hui-Chen

AU - Li, Baosheng

AU - Liebermann, Robert C.

PY - 2006/9/1

Y1 - 2006/9/1

N2 - Using ultrasonic interferometry in conjunction with synchrotron X-radiation techniques in a high-pressure, multi-anvil apparatus, the elastic behavior of MgSiO3 pyroxene has been continuously monitored as the specimens undergo phase transformations from the orthoenstatite (OEN) to the high-pressure clinoenstatite phase (HP-CEN) and from HP-CEN to the low-pressure clinoenstatite phase (LP-CEN). In the former case, elastic softening and amplitude attenuation is observed for both compresssional (P) and shear (S) waves when the pressure exceeds 9 GPa at room temperature, which we suggest is associated with a transition to a metastable phase intermediate between OEN and HP-CEN. In the latter case, both P and S wave velocities decrease rapidly as the back-transformation from HP-CEN to LP-CEN occurs on decrease of pressure below 4 GPa at room temperature; this is accompanied by an increase in attenuation of the P waves in the specimen, but not the S waves.

AB - Using ultrasonic interferometry in conjunction with synchrotron X-radiation techniques in a high-pressure, multi-anvil apparatus, the elastic behavior of MgSiO3 pyroxene has been continuously monitored as the specimens undergo phase transformations from the orthoenstatite (OEN) to the high-pressure clinoenstatite phase (HP-CEN) and from HP-CEN to the low-pressure clinoenstatite phase (LP-CEN). In the former case, elastic softening and amplitude attenuation is observed for both compresssional (P) and shear (S) waves when the pressure exceeds 9 GPa at room temperature, which we suggest is associated with a transition to a metastable phase intermediate between OEN and HP-CEN. In the latter case, both P and S wave velocities decrease rapidly as the back-transformation from HP-CEN to LP-CEN occurs on decrease of pressure below 4 GPa at room temperature; this is accompanied by an increase in attenuation of the P waves in the specimen, but not the S waves.

UR - http://www.scopus.com/inward/record.url?scp=33748174627&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748174627&partnerID=8YFLogxK

U2 - 10.1016/j.jpcs.2006.05.028

DO - 10.1016/j.jpcs.2006.05.028

M3 - Article

VL - 67

SP - 2051

EP - 2055

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

IS - 9-10

ER -