Influence of temperature and pressure on the electrical resistivity of gold and copper up to 1350 K and 100 GPa

Học, Nguyễn Quang; Tinh, Bui Duc; Hiền, Nguyễn Đức

doi:10.1016/j.materresbull.2020.110874

Cited by 11 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We observed a sharp reduction in the magnitude of resistivity versus pressure slope at ∼4 GPa in both Cu and Au ( Figure 6 ). In comparison with experimental studies measured up to 5 GPa [ 11 , 13 ] and theoretical study [ 26 ], our results were slightly lower in values by about 1 µohm-cm The deviation with these experimental studies could be attributed to error in the determination of sample geometry from the ex-situ recovered samples as well as pressure calibration. However, the slope of the pressure dependence measured up to ∼4 GPa in our present study was comparable with previous studies.…”

Section: Resultscontrasting

confidence: 62%

Electrical Resistivity of Cu and Au at High Pressure above 5 GPa: Implications for the Constant Electrical Resistivity Theory along the Melting Curve of the Simple Metals

Ezenwa

Yoshino

2021

Materials

View full text Add to dashboard Cite

The electrical resistivity of solid and liquid Cu and Au were measured at high pressures from 6 up to 12 GPa and temperatures ∼150 K above melting. The resistivity of the metals was also measured as a function of pressure at room temperature. Their resistivity decreased and increased with increasing pressure and temperature, respectively. With increasing pressure at room temperature, we observed a sharp reduction in the magnitude of resistivity at ∼4 GPa in both metals. In comparison with 1 atm data and relatively lower pressure data from previous studies, our measured temperature-dependent resistivity in the solid and liquid states show a similar trend. The observed melting temperatures at various fixed pressure are in reasonable agreement with previous experimental and theoretical studies. Along the melting curve, the present study found the resistivity to be constant within the range of our investigated pressure (6–12 GPa) in agreement with the theoretical prediction. Our results indicate that the invariant resistivity theory could apply to the simple metals but at higher pressure above 5 GPa. These results were discussed in terms of the saturation of the dominant nuclear screening effect caused by the increasing difference in energy level between the Fermi level and the d-band with increasing pressure.

show abstract

Section: Resultscontrasting

confidence: 62%

Electrical Resistivity of Cu and Au at High Pressure above 5 GPa: Implications for the Constant Electrical Resistivity Theory along the Melting Curve of the Simple Metals

Ezenwa

Yoshino

2021

Materials

View full text Add to dashboard Cite

show abstract

“…Indeed, Tan and Tam [36] have used the Lennard-Jones pairwise potential [96] to formulate the SMM EOS. This method often causes an overestimation of the scaled atomic volume [97][98][99]. At 330 GPa, ξ 3 for the Lennard-Jones iron has been reported to be 0.72 [36], about 22 % larger than the DAC value [51][52][53].…”

Section: Fig 2 (Color Online)mentioning

confidence: 99%

Theoretical predictions of melting behaviors of hcp iron up to 4000 GPa

Cuong,

Hoc,

Trung

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

The high-pressure melting diagram of iron is a vital ingredient for the geodynamic modeling of planetary interiors. Nonetheless, available data for molten iron show an alarming discrepancy.Herein, we propose an efficient one-phase approach to capture the solid-liquid transition of iron under extreme conditions. Our basic idea is to extend the statistical moment method to determine the density of iron in the TPa region. On that basis, we adapt the work-heat equivalence principle to appropriately link equation-of-state parameters with melting properties. This strategy allows explaining cutting-edge experimental and ab initio results without massive computational workloads. Our theoretical calculations would be helpful to constrain the chemical composition, internal dynamics, and thermal evolution of the Earth and super-Earths.

show abstract

“…Metals and interstitial alloys [1][2][3][4][5] have been investigated by several research groups in the last decades due to their applications in various fields [6][7][8][9]. Many theoretical and experimental studies about the mechanical and thermodynamic properties of metals and interstitial alloys gained scientific and technological attention and represent an active area of research that requires integrating modern scientific insights [10][11][12][13][14] from multiple disciplines [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…Equations ( 1)-( 40) are used in our previous papers [1][2][3][4][5][6][7][8][9] on elastic, thermodynamic and melting properties of metals and interstitial alloys. Equations (41)-(52) only are used to study the jumps of volume, enthalpy and entropy, and the Debye temperature of metals.…”

Section: Introductionmentioning

confidence: 99%

Study on the Melting Temperature, the Jumps of Volume, Enthalpy and Entropy at Melting Point, and the Debye Temperature for the BCC Defective and Perfect Interstitial Alloy WSi under Pressure

Học

Duc²,

Trong

et al. 2021

J. Compos. Sci.

View full text Add to dashboard Cite

The objective of this study is to determine the analytic expressions of the Helmholtz free energy, the equilibrium vacancy concentration, the melting temperature, the jumps of volume, enthalpy the mean nearest neighbor distance and entropy at melting point, the Debye temperature for the BCC defective, the limiting temperature of absolute stability for the crystalline state, and for the perfect binary interstitial alloy. The results obtained from the expressions are combined with the statistical moment method, the limiting condition of the absolute stability at the crystalline state, the Clausius–Clapeyron equation, the Debye model and the Gruneisen equation. Our numerical calculations of obtained theoretical results were carried out for alloy WSi under high temperature and pressure. Our calculated melting curve and relation between the melting temperature and the silicon concentration for WSi are in good agreement with other calculations. Our calculations for the jumps of volume, enthalpy and entropy, and the Debye temperature for WSi predict and orient experimental results in the future.

show abstract

Influence of temperature and pressure on the electrical resistivity of gold and copper up to 1350 K and 100 GPa

Cited by 11 publications

References 29 publications

Electrical Resistivity of Cu and Au at High Pressure above 5 GPa: Implications for the Constant Electrical Resistivity Theory along the Melting Curve of the Simple Metals

Electrical Resistivity of Cu and Au at High Pressure above 5 GPa: Implications for the Constant Electrical Resistivity Theory along the Melting Curve of the Simple Metals

Theoretical predictions of melting behaviors of hcp iron up to 4000 GPa

Study on the Melting Temperature, the Jumps of Volume, Enthalpy and Entropy at Melting Point, and the Debye Temperature for the BCC Defective and Perfect Interstitial Alloy WSi under Pressure

Contact Info

Product

Resources

About