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Evidence of Copious Vacancy Formation in Ni and Pd under a High Hydrogen Pressure
Abstract
From in situ observation of X-ray diffraction of Ni and Pd under a high hydrogen pressure (≃5 GPa) and temperatures (≤800°C), anomalous lattice contraction of the hydride was found to occur in 2∼3 h. This contraction, amounting to ∼0.5 Å 3 per a metal atom, remained in the recovered specimen even after the hydrogen was removed by heating to 400°C, but was annealed out at 800°C. The concentration of vacancies responsible for this effect is estimated at ∼20% of metal-atom sites. Anomalous concentration dependence of the hydrogen-induced volume and enhanced diffusion of metal atoms are explained in terms of this effect.
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Citations
Cited by
Formation of Superabundant Vacancies in Pd Hydride under High Hydrogen Pressures
Fukai, Y., & Ōkuma, N. (1994) · Physical Review Letters · doi:10.1103/physrevlett.73.1640 · Cited by 391
Revisiting the cold case of cold fusion
Berlinguette, C. P., Chiang, Y.-M., Munday, J. N., Schenkel, T., Fork, D. K., Koningstein, R., & Trevithick, M. D. (2019) · Nature · doi:10.1038/s41586-019-1256-6 · Cited by 88
Metadata
- Authors
- Yuh Fukai, Y. F., & Nobuyuki Ōkuma, N. Ō.
- Venue
- Japanese Journal of Applied Physics
- Publisher
- IOP Publishing
- Published
- 1993-09-01
- Volume
- 32
- Issue
- 9A
- Pages
- L1256
- ISSN
- 0021-4922 (ISSN-L)
- 1347-4065
- OpenAlex
- W2068446502
- Cited by
- 277
- References
- 0
- FWCI
- 7.10
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yuh Fukai, Y. F., & Nobuyuki Ōkuma, N. Ō. (1993). Evidence of Copious Vacancy Formation in Ni and Pd under a High Hydrogen Pressure. Japanese Journal of Applied Physics. https://doi.org/10.1143/jjap.32.l1256
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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