Direct observation of long-range migration of self-interstitial atoms in stage i of irradiated platinum

P. Pétroff; D. N. Seidman

doi:10.1063/1.1653520

Direct observation of long-range migration of self-interstitial atoms in stage i of irradiated platinum

P. Pétroff^*, D. N. Seidman

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The motion of single self-interstitial atoms (SIA's) in stage I of irradiated platinum was observed directly by field ion microscopy. A specimen irradiated at a temperature of 10°K with 20-keV Pt⁺ ions was found to contain immobile SIA's in the bulk at this temperature, as determined via pulse-field evaporation experiments. Direct observation of specimens, irradiated with 20- or 30-keV Pt⁺ ions, during warming experiments from 10 to 70°K showed that a flux of SIA's crossed the surface of the specimens between 13 and 25°K. Application of a diffusion model to the data yielded a value of ∼ 0.06 eV for the enthalpy change of migration and a diffusion coefficient of ∼ 0.5 exp(-0.06 eV/kT) cm² sec ^-1 for the SIA.

Original language	English (US)
Pages (from-to)	518-520
Number of pages	3
Journal	Applied Physics Letters
Volume	18
Issue number	11
DOIs	https://doi.org/10.1063/1.1653520
State	Published - 1971

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Direct observation of long-range migration of self-interstitial atoms in stage i of irradiated platinum",

abstract = "The motion of single self-interstitial atoms (SIA's) in stage I of irradiated platinum was observed directly by field ion microscopy. A specimen irradiated at a temperature of 10°K with 20-keV Pt+ ions was found to contain immobile SIA's in the bulk at this temperature, as determined via pulse-field evaporation experiments. Direct observation of specimens, irradiated with 20- or 30-keV Pt+ ions, during warming experiments from 10 to 70°K showed that a flux of SIA's crossed the surface of the specimens between 13 and 25°K. Application of a diffusion model to the data yielded a value of ∼ 0.06 eV for the enthalpy change of migration and a diffusion coefficient of ∼ 0.5 exp(-0.06 eV/kT) cm2 sec -1 for the SIA.",

author = "P. P{\'e}troff and Seidman, {D. N.}",

year = "1971",

doi = "10.1063/1.1653520",

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TY - JOUR

T1 - Direct observation of long-range migration of self-interstitial atoms in stage i of irradiated platinum

AU - Pétroff, P.

AU - Seidman, D. N.

PY - 1971

Y1 - 1971

N2 - The motion of single self-interstitial atoms (SIA's) in stage I of irradiated platinum was observed directly by field ion microscopy. A specimen irradiated at a temperature of 10°K with 20-keV Pt+ ions was found to contain immobile SIA's in the bulk at this temperature, as determined via pulse-field evaporation experiments. Direct observation of specimens, irradiated with 20- or 30-keV Pt+ ions, during warming experiments from 10 to 70°K showed that a flux of SIA's crossed the surface of the specimens between 13 and 25°K. Application of a diffusion model to the data yielded a value of ∼ 0.06 eV for the enthalpy change of migration and a diffusion coefficient of ∼ 0.5 exp(-0.06 eV/kT) cm2 sec -1 for the SIA.

AB - The motion of single self-interstitial atoms (SIA's) in stage I of irradiated platinum was observed directly by field ion microscopy. A specimen irradiated at a temperature of 10°K with 20-keV Pt+ ions was found to contain immobile SIA's in the bulk at this temperature, as determined via pulse-field evaporation experiments. Direct observation of specimens, irradiated with 20- or 30-keV Pt+ ions, during warming experiments from 10 to 70°K showed that a flux of SIA's crossed the surface of the specimens between 13 and 25°K. Application of a diffusion model to the data yielded a value of ∼ 0.06 eV for the enthalpy change of migration and a diffusion coefficient of ∼ 0.5 exp(-0.06 eV/kT) cm2 sec -1 for the SIA.

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DO - 10.1063/1.1653520

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EP - 520

JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Direct observation of long-range migration of self-interstitial atoms in stage i of irradiated platinum

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