What question did this study set out to answer?

To measure the influence of hydrostatic pressure on the formation of single lattice vacancies and determine their activation volume in pure gold.

February 1, 1963Physical Review

Pressure Effect on Vacancy Formation in Gold

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Authors

RHR. P. HuebenerUniversity of Tübingen CHC.G. HomanUnited States Department of the Army

Discussion

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Implication

Experimental study demonstrates that high hydrostatic pressure reduces vacancy formation in gold wires, indicating an activation volume of roughly half an atomic volume.

Key Points

To measure the influence of hydrostatic pressure on the formation of single lattice vacancies and determine their activation volume in pure gold.
Heated 99.999% pure gold wires to 680°C via electric resistance in a gas medium at pressures ranging from 400 to 11,000 atmospheres.
Rapidly quenched specimens by switching off heating current with an exponential temperature decay half-life of 1.6 × 10⁻² seconds to trap lattice defects.
Measured changes in quenched-in electrical resistance (ΔR) as a function of pressure.
Logarithmic quenched-in electric resistance decreased linearly with increasing pressure, yielding a pressure-independent activation volume of ΔVf = (9.16 ± 0.68) × 10⁻²⁴ cm³ (0.53 ± 0.04 atomic volume).
Calculated the vacancy electrical resistivity to be (1.8 ± 0.4) × 10⁻⁶ Ω cm/at.% and the room-pressure quenched vacancy concentration to be (2.4 ± 0.5) × 10⁻⁵.

Cite This Study

Huebener et al. (1963) studied this question.

synapsesocial.com/papers/6a830bb15db41a8ba7af87ea https://doi.org/10.1103/physrev.129.1162

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February 1, 1963Physical Review

Pressure Effect on Vacancy Formation in Gold

View Full Paper

Ask AI

Bookmark

Authors

RHR. P. HuebenerUniversity of Tübingen CHC.G. HomanUnited States Department of the Army

Discussion

Member takes

Implication

Experimental study demonstrates that high hydrostatic pressure reduces vacancy formation in gold wires, indicating an activation volume of roughly half an atomic volume.

Key Points

To measure the influence of hydrostatic pressure on the formation of single lattice vacancies and determine their activation volume in pure gold.
Heated 99.999% pure gold wires to 680°C via electric resistance in a gas medium at pressures ranging from 400 to 11,000 atmospheres.
Rapidly quenched specimens by switching off heating current with an exponential temperature decay half-life of 1.6 × 10⁻² seconds to trap lattice defects.
Measured changes in quenched-in electrical resistance (ΔR) as a function of pressure.
Logarithmic quenched-in electric resistance decreased linearly with increasing pressure, yielding a pressure-independent activation volume of ΔVf = (9.16 ± 0.68) × 10⁻²⁴ cm³ (0.53 ± 0.04 atomic volume).
Calculated the vacancy electrical resistivity to be (1.8 ± 0.4) × 10⁻⁶ Ω cm/at.% and the room-pressure quenched vacancy concentration to be (2.4 ± 0.5) × 10⁻⁵.

Cite This Study

Huebener et al. (1963) studied this question.

synapsesocial.com/papers/6a830bb15db41a8ba7af87ea https://doi.org/10.1103/physrev.129.1162

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