Pressure dependence of the Grüneisen parameter of sodium and potassium

Ramakrishnan, J.; Kennedy, George C.

doi:10.1016/0022-3697(80)90200-0

Cited by 50 publications

(4 citation statements)

References 16 publications

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“…According to Saunders' studies [11], this similarity implies that the longwavelength acoustic branches play an important role in governing the thermal properties of the metallic glass. Together with the positive pressure derivatives of elastic constants, the similarity of the thermal Grüneisen parameter to the mean acoustic Grüneisen parameter in the long-wavelength limit reflects a high atomic coordination number [29]. This is in agreement with the Pd 39 Ni 10 Cu 30 P 21 BMG having a close-packed atomic configuration.…”

Section: Resultssupporting

confidence: 69%

“…After the long-wavelength Grüneisen parameter of the Pd 39 Ni 10 Cu 30 P 21 BMG is obtained, it is necessary and useful to know the long-wavelength phonon contribution to the total Grüneisen parameter, i.e., the thermal Grüneisen parameter. In the quasiharmonic approximation, the thermal Grüneisen parameter γ th , which is an average of the contributions of all of the phonons through the Brillouin zone to the total vibrational anharmonicity, can be yielded from the relation [11,29]…”

Section: Resultsmentioning

confidence: 99%

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Pressure dependence of the elastic constants and vibrational anharmonicity of Pd₃₉Ni₁₀Cu₃₀P₂₁bulk metallic glass

Wang

Sun

et al. 2002

J. Phys.: Condens. Matter

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The pressure dependence of the acoustic velocities of a Pd39Ni10Cu30P21 bulk metallic glass have been investigated up to 0.5 GPa at room temperature with the pulse echo overlap method. Two independent second-order elastic coefficients C11 and C44 and their pressure derivatives are yielded. The vibrational anharmonicity is shown by calculating both the acoustic mode Grüneisen parameters in the long-wavelength limit and the thermal Grüneisen parameter, and this result is compared with that for the Pd40Ni40P20 bulk glass.

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Section: Resultssupporting

confidence: 69%

Section: Resultsmentioning

confidence: 99%

Pressure dependence of the elastic constants and vibrational anharmonicity of Pd₃₉Ni₁₀Cu₃₀P₂₁bulk metallic glass

Wang

Sun

et al. 2002

J. Phys.: Condens. Matter

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“…Several authors have used the thermoelastic method (adiabatic heating) to determine important thermodynamic properties. Kennedy et al [35,36] determined the pressure dependence of the Griineisen parameter in different inorganic materials. Bottani et aI., [37,38] measured the Grfineisen parameter and the thermal diffusivity coefficient of titanium and steel using the temperature increments obtained from rapid compression.…”

Section: Resumts and Discussionmentioning

confidence: 99%

Thermal effects in high density polyethylene and low density polyethylene at high hydrostatic pressures

Rodriguez

Filisko

1987

J Mater Sci

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The temperature changes as a result of rapid hydrostatic pressure applications are reported for high density polyethylene (HDPE) and low density polyethylene (LDPE) in the reference temperature range from 298 to 423 K and in the pressure range from 13.8 to 200 MN m-2. The adiabatic temperature changes were found to be a function of pressure and temperature. A curve fitting analysis showed that the empirical curve (#T/#P) = ab(AP) b-1 described the experimental thermoelastic coefficients obtained from the experiments. The data were analyzed by determining the predicted thermoelastic coefficients derived from the Thomson equation (#T/OP)e = ~To/QC p, The experimental and predicted GrLineisen parameter 7T were also determined.

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“…All materials which have a positive thermal expansion coefficient behave in this manner. The thermoelastic effect has Padmaja attained significance in recent years as researchers in engineering and solid-state physics have utilized the effect for important applications such as monitoring stress fluctuations in materials [1] and evaluating the Gruneisen function for materials [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Pressure dependence of the thermoelastic quotient for three glasses

Padmaja

1996

Int J Thermophys

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The interrelationship between the mechanical work done on a material in the elastic range and changes in its thermodynamic properties, that is, between stress and strain, on the one hand, and temperature and entropy, on the other, is known as the thermoelastic effect. The phenomenon is exactly adiabatic and is characterized by the thermoelastic quotient commonly referred to as thermoelastic constant. The thermoelastic effect can be used for stress analysis by monitoring the stress fluctuations by means of infrared radiometry. Also, it can be applied to study the anharmonicity in materials by measuring the temperature changes associated with adiabatic pressure changes. In this paper thermodynamic expressions are derived for the pressure derivative of the thermoelastic quotient under adiabatic as well as isothermal conditions. The derived expressions are applied to investigate the thermoelastic effect for the three glasses, namely, silica glass, soda-lime silica glass, and lead-silica glass. The isothermal pressure derivative of the thermoelastic quotient is evaluated for the three glasses. The isothermal volume derivative of the Gruneisen function is calculated.

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Pressure dependence of the Grüneisen parameter of sodium and potassium

Cited by 50 publications

References 16 publications

Pressure dependence of the elastic constants and vibrational anharmonicity of Pd₃₉Ni₁₀Cu₃₀P₂₁bulk metallic glass

Pressure dependence of the elastic constants and vibrational anharmonicity of Pd₃₉Ni₁₀Cu₃₀P₂₁bulk metallic glass

Thermal effects in high density polyethylene and low density polyethylene at high hydrostatic pressures

Pressure dependence of the thermoelastic quotient for three glasses

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Pressure dependence of the Grüneisen parameter of sodium and potassium

Cited by 50 publications

References 16 publications

Pressure dependence of the elastic constants and vibrational anharmonicity of Pd39Ni10Cu30P21bulk metallic glass

Pressure dependence of the elastic constants and vibrational anharmonicity of Pd39Ni10Cu30P21bulk metallic glass

Thermal effects in high density polyethylene and low density polyethylene at high hydrostatic pressures

Pressure dependence of the thermoelastic quotient for three glasses

Contact Info

Product

Resources

About

Pressure dependence of the elastic constants and vibrational anharmonicity of Pd₃₉Ni₁₀Cu₃₀P₂₁bulk metallic glass

Pressure dependence of the elastic constants and vibrational anharmonicity of Pd₃₉Ni₁₀Cu₃₀P₂₁bulk metallic glass