Sound velocity measurements on laser-heated MgO and Al2O3

Stanislav V. Sinogeikin, Dmitry L. Lakshtanov, Jason D. Nicholas, Jay D. Bass

Research output: Contribution to journalArticle

  • 27 Citations

Abstract

Brillouin spectroscopy, in conjunction with CO2 laser-heating, was employed to measure sound velocities at high temperatures on single crystals of MgO and Al2O3. The acoustic velocities of MgO were measured to a temperature exceeding 2500 (1 0 0) K, the highest temperature at which the Brillouin scattering measurements have been carried out. The temperature of MgO was inferred on the basis of independent sound velocity measurements using a resistance heater. The thermal background in the Brillouin spectra remained negligible to 1900 K and became problematic only at temperatures exceeding 2300 K. Both Brillouin and Raman measurements were performed on CO2 laser-heated samples of single-crystal α-Al2O3 to temperatures exceeding 2000 (1 0 0) K. The temperature dependence of the Raman shift was used to estimate the sample temperature. Our high-temperature velocity measurements in different crystallographic directions are in agreement with previous high-temperature elasticity measurements by resonance techniques. This demonstrates the usefulness of Raman scattering to characterize moderate temperatures (where the intensity of thermal radiation is low). Our results show that Brillouin scattering coupled with CO2 laser-heating is a viable means of performing sound velocity measurements at temperatures significantly higher than those readily made using resistance heating.

Original languageEnglish (US)
Pages (from-to)575-586
Number of pages12
JournalPhysics of the Earth and Planetary Interiors
Volume143
Issue number1-2
DOIs
StatePublished - Jun 15 2004
Externally publishedYes

Profile

temperature
acoustic velocity
velocity measurement
sound velocity
laser
scattering
heating
laser heating
single crystals
crystal
resistance heating
thermal radiation
heaters
elastic properties
Raman spectra
temperature dependence
shift
estimates
spectroscopy
elasticity

Keywords

  • AlO
  • Brillouin spectroscopy
  • CO laser-heating
  • Elastic properties
  • High temperature
  • MgO
  • Raman spectroscopy

ASJC Scopus subject areas

  • Geophysics
  • Space and Planetary Science

Cite this

Sound velocity measurements on laser-heated MgO and Al2O3. / Sinogeikin, Stanislav V.; Lakshtanov, Dmitry L.; Nicholas, Jason D.; Bass, Jay D.

In: Physics of the Earth and Planetary Interiors, Vol. 143, No. 1-2, 15.06.2004, p. 575-586.

Research output: Contribution to journalArticle

Sinogeikin SV, Lakshtanov DL, Nicholas JD, Bass JD. Sound velocity measurements on laser-heated MgO and Al2O3. Physics of the Earth and Planetary Interiors. 2004 Jun 15;143(1-2):575-586. Available from, DOI: 10.1016/j.pepi.2003.09.017

Sinogeikin, Stanislav V.; Lakshtanov, Dmitry L.; Nicholas, Jason D.; Bass, Jay D. / Sound velocity measurements on laser-heated MgO and Al2O3.

In: Physics of the Earth and Planetary Interiors, Vol. 143, No. 1-2, 15.06.2004, p. 575-586.

Research output: Contribution to journalArticle

@article{f4ffb738b8a844028e32aabb8cfebc7d,
title = "Sound velocity measurements on laser-heated MgO and Al2O3",
abstract = "Brillouin spectroscopy, in conjunction with CO2 laser-heating, was employed to measure sound velocities at high temperatures on single crystals of MgO and Al2O3. The acoustic velocities of MgO were measured to a temperature exceeding 2500 (1 0 0) K, the highest temperature at which the Brillouin scattering measurements have been carried out. The temperature of MgO was inferred on the basis of independent sound velocity measurements using a resistance heater. The thermal background in the Brillouin spectra remained negligible to 1900 K and became problematic only at temperatures exceeding 2300 K. Both Brillouin and Raman measurements were performed on CO2 laser-heated samples of single-crystal α-Al2O3 to temperatures exceeding 2000 (1 0 0) K. The temperature dependence of the Raman shift was used to estimate the sample temperature. Our high-temperature velocity measurements in different crystallographic directions are in agreement with previous high-temperature elasticity measurements by resonance techniques. This demonstrates the usefulness of Raman scattering to characterize moderate temperatures (where the intensity of thermal radiation is low). Our results show that Brillouin scattering coupled with CO2 laser-heating is a viable means of performing sound velocity measurements at temperatures significantly higher than those readily made using resistance heating.",
keywords = "AlO, Brillouin spectroscopy, CO laser-heating, Elastic properties, High temperature, MgO, Raman spectroscopy",
author = "Sinogeikin, {Stanislav V.} and Lakshtanov, {Dmitry L.} and Nicholas, {Jason D.} and Bass, {Jay D.}",
year = "2004",
month = "6",
doi = "10.1016/j.pepi.2003.09.017",
volume = "143",
pages = "575--586",
journal = "Physics of the Earth and Planetary Interiors",
issn = "0031-9201",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Sound velocity measurements on laser-heated MgO and Al2O3

AU - Sinogeikin,Stanislav V.

AU - Lakshtanov,Dmitry L.

AU - Nicholas,Jason D.

AU - Bass,Jay D.

PY - 2004/6/15

Y1 - 2004/6/15

N2 - Brillouin spectroscopy, in conjunction with CO2 laser-heating, was employed to measure sound velocities at high temperatures on single crystals of MgO and Al2O3. The acoustic velocities of MgO were measured to a temperature exceeding 2500 (1 0 0) K, the highest temperature at which the Brillouin scattering measurements have been carried out. The temperature of MgO was inferred on the basis of independent sound velocity measurements using a resistance heater. The thermal background in the Brillouin spectra remained negligible to 1900 K and became problematic only at temperatures exceeding 2300 K. Both Brillouin and Raman measurements were performed on CO2 laser-heated samples of single-crystal α-Al2O3 to temperatures exceeding 2000 (1 0 0) K. The temperature dependence of the Raman shift was used to estimate the sample temperature. Our high-temperature velocity measurements in different crystallographic directions are in agreement with previous high-temperature elasticity measurements by resonance techniques. This demonstrates the usefulness of Raman scattering to characterize moderate temperatures (where the intensity of thermal radiation is low). Our results show that Brillouin scattering coupled with CO2 laser-heating is a viable means of performing sound velocity measurements at temperatures significantly higher than those readily made using resistance heating.

AB - Brillouin spectroscopy, in conjunction with CO2 laser-heating, was employed to measure sound velocities at high temperatures on single crystals of MgO and Al2O3. The acoustic velocities of MgO were measured to a temperature exceeding 2500 (1 0 0) K, the highest temperature at which the Brillouin scattering measurements have been carried out. The temperature of MgO was inferred on the basis of independent sound velocity measurements using a resistance heater. The thermal background in the Brillouin spectra remained negligible to 1900 K and became problematic only at temperatures exceeding 2300 K. Both Brillouin and Raman measurements were performed on CO2 laser-heated samples of single-crystal α-Al2O3 to temperatures exceeding 2000 (1 0 0) K. The temperature dependence of the Raman shift was used to estimate the sample temperature. Our high-temperature velocity measurements in different crystallographic directions are in agreement with previous high-temperature elasticity measurements by resonance techniques. This demonstrates the usefulness of Raman scattering to characterize moderate temperatures (where the intensity of thermal radiation is low). Our results show that Brillouin scattering coupled with CO2 laser-heating is a viable means of performing sound velocity measurements at temperatures significantly higher than those readily made using resistance heating.

KW - AlO

KW - Brillouin spectroscopy

KW - CO laser-heating

KW - Elastic properties

KW - High temperature

KW - MgO

KW - Raman spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=2442473764&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2442473764&partnerID=8YFLogxK

U2 - 10.1016/j.pepi.2003.09.017

DO - 10.1016/j.pepi.2003.09.017

M3 - Article

VL - 143

SP - 575

EP - 586

JO - Physics of the Earth and Planetary Interiors

T2 - Physics of the Earth and Planetary Interiors

JF - Physics of the Earth and Planetary Interiors

SN - 0031-9201

IS - 1-2

ER -