Phase transition and sound velocity measurements in very small solid samples under high pressure by Brillouin scattering

Sound velocity and equation of state of liquids provide important constraints on the generation, presence, and transport of silicate and metallic melts in the Earth’s interior. Unlike their solid counterparts, these properties of liquids pose great technical challenges to high-pressure measurements and are poorly constrained. Here we present the technical developments that have been made at the GSECARS beamline 13-ID-D of the Advanced Photon Source for the past several years for determination of sound velocity of liquids using the ultrasonic techniques in a 1000-ton Kawai-type multianvil apparatus. Temperature of the sound velocity measurements has been extended to ~2400 K at 4 GPa and ~2000 K at 8 GPa to enable studies of liquids with very high melting temperatures, such as the silicate liquids.

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Sound velocity measurements in liquid Fe–S at high pressure: Implications for Earth's and lunar cores

Earth and Planetary Science Letters ◽

10.1016/j.epsl.2012.11.042 ◽

2013 ◽

Vol 362 ◽

pp. 182-186 ◽

Cited By ~ 18

Author(s):

Keisuke Nishida ◽

Yoshio Kono ◽

Hidenori Terasaki ◽

Suguru Takahashi ◽

Miho Ishii ◽

...

Keyword(s):

High Pressure ◽

Sound Velocity ◽

Velocity Measurements

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Melting along the Hugoniot and solid phase transition for Sn via sound velocity measurements

Journal of Applied Physics ◽

10.1063/1.4967515 ◽

2016 ◽

Vol 120 (19) ◽

pp. 195101 ◽

Cited By ~ 1

Author(s):

Ping Song ◽

Ling-cang Cai ◽

Tian-jiong Tao ◽

Shuai Yuan ◽

Hong Chen ◽

...

Keyword(s):

Phase Transition ◽

Sound Velocity ◽

Solid Phase ◽

Velocity Measurements ◽

Solid Phase Transition

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Brillouin Scattering Study of the Polarization Relaxation Time near the Ferroelectric Phase Transition in Triglycine Selenate under High Pressure

Journal of the Physical Society of Japan ◽

10.1143/jpsj.51.1453 ◽

1982 ◽

Vol 51 (5) ◽

pp. 1453-1460 ◽

Cited By ~ 3

Author(s):

Haruyasu Yamashita ◽

Itaru Tatsuzaki

Keyword(s):

Phase Transition ◽

High Pressure ◽

Relaxation Time ◽

Ferroelectric Phase Transition ◽

Ferroelectric Phase ◽

Brillouin Scattering ◽

Triglycine Selenate ◽

Scattering Study

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Measurement of Physical Properties of Lubricants Under High Pressure by Brillouin Scattering in a Diamond Anvil Cell

Journal of Tribology ◽

10.1115/1.2831284 ◽

1995 ◽

Vol 117 (3) ◽

pp. 519-523 ◽

Cited By ~ 8

Author(s):

Y. Nakamura ◽

I. Fujishiro ◽

K. Nishibe ◽

H. Kawakami

Keyword(s):

High Pressure ◽

Shear Modulus ◽

Sound Velocity ◽

Diamond Anvil Cell ◽

Brillouin Scattering ◽

Transverse Mode ◽

Thermodynamic Relation ◽

Slope Change ◽

Scattering Spectra ◽

Diamond Anvil

Brillouin scattering spectra and their transverse mode were measured for paraffinic and naphthenic synthetic lubricants, employing a high-pressure diamond anvil cell (DAC). Sound velocity, density, refractive index, and shear modulus under high pressure were obtained. The density obtained from the thermodynamic relation was compared with that from Lorentz-Lorenz‘s formula. The densities were also compared with Dowson‘s density-pressure equation of lubricants. The sound velocity in the transverse mode and shear modulus were obtained for 5P4E up to 2.7 GPa. A slope change in the pressure-sound velocity diagram was confirmed at about 0.3 GPa, which may be associated with crystallizaton of 5P4E, observed through a diamond optical window in the DAC.

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