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 15 publications

(6 citation statements)

References 29 publications

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“…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

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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.

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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

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“…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

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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.

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“…in recent years, many simulations and theoretical studies on the influences of factors such as temperature, pressure, atomic number, impurities,... on structural, mechanical; thermodynamic, melting and electrical properties, phase transtions of metals, alloys and polymers have been published [26][27][28][29][30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Học

Tinh

Hiền³

2022

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The MelTing and The debye TeMperaTure of for bCC and fCC MeTals under pressure: a CalCulaTion froM The sTaTisTiCal MoMenT MeThodWe build the melting theory and the theory of the Debye temperature for defective and perfect cubic metals mainly based on the statistical moment method. our theoretical results are applied to metals Ni, Pd and Pt. our calculations of melting temperatures agree well with experiments and other calculations. our other calculations are highly reliable.

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

Cited by 15 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

Archives of Metallurgy and Materials

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