Point-Defect Studies in Platinum by Electron Irradiation at Low Temperatures. I. Defect Production

Bauer, Walter; Goeppinger, W. F.

doi:10.1103/physrev.154.584

Cited by 29 publications

(1 citation statement)

References 16 publications

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“…The number of direct displacements in such regions when irradiated with 20-MeV deuterons is about 50% greater than in an equal volume of perfect lattice where the displacement threshold is about 40 eV. 26 Thus the production enhancement from this cause is less than 0.05%, as contrasted to our observed 12-15% enhancements.…”

Section: A Defect Production I Influence Of Deformation and Partialcontrasting

confidence: 61%

Influence of Plastic Deformation and of Substitutional Gold on Defect Production and Recovery in Platinum

Jackson

Herschbach²

1968

Phys. Rev.

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Both the production of defects in Pt by deuteron irradiation at 6°K and the subsequent thermally activated recovery of these defects are perturbed when Pt is deformed or alloyed before irradiation. The atomic rearrangements that occur in the various recovery substages are known with perhaps less ambiguity in Pt than in any other metal. This knowledge is used to analyze in detail the interactions between the defects injected before the irradiation and the atoms displaced during the irradiation that produce these perturbations.

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Section: A Defect Production I Influence Of Deformation and Partialcontrasting

confidence: 61%

Influence of Plastic Deformation and of Substitutional Gold on Defect Production and Recovery in Platinum

Jackson

Herschbach²

1968

Phys. Rev.

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Vacancies, divacancies, and self‐diffusion in platinum

Schumacher¹,

Seeger²,

Härlin

1968

Physica Status Solidi (b)

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Thin wires of high-purity platinum are quenched from high temperatures by means of the helium-I1 technique. After quenching from about 1000 "C the electrical resistivity is found to recover between 380 and 520 "C with an activation energy of (1.33f0.05) eV. After quenching from near the melting point the recovery occures between 200 and 460 "C and can be decomposed into two second-order processes with activation energies of 1.0 and 1.34 eV, respectively. The self-diffusion data are re-analysed allowing for the contribution of both mono-and divacancies. This analysis is compared critically with the results of the present quenching experiments and with previous work. A consistent set of vacany parameters is proposed for Pt.Hochreines Platin in Form diinner Driihte wurde mit Hilfe der He-11-Methode von hohen Temperaturen abgeschreckt. In Proben, die von etwa 1000 "C abgeschreckt worden waren, erholte sich der elektrische Widerstand zwischen 380 und 520 "C mit einer Aktivierungsenergie von (1,33 f 0,05) eV. Nach Abschrecken von der Niihe des Schmelzpunktes erfolgte die Erholung zwischen 200 und 460 "C und konnte in zwei Prozesse zweiter Ordnung mit Aktivierungsenergien von 1,0 bzw. 1,34 eV zerlegt werden. Die Selbstdiffusionsdatn werden erneut ausgewertet unter Berlicksichtigung gleichzeitiger Beitriige von Einfachund Doppelleerstellen. Die Ergebnisse werden kritisch mit denjenigen der vorliegenden Abschreckmessungen und mit friiheren Arbeiten verglichen. Ein in sich konsistenter Satz von Leerstellen-(bzw. Doppelleerstel1en)-Eigenschaften wird vorgeschlagen.

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Mössbauer Measurements of the Debye‐Waller Factor of Gold in Platinum after Low‐Temperature Neutron Irradiation

Mansel¹,

Vogl²,

Vogl³

et al. 1970

Physica Status Solidi (b)

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a), G . Vom(a), w. VoaL(a), H. WENZL(a)'), and D. BABB (b),)PtlS7, which decays with 20 h half-life to Aulg?, is produced by irradiation of platinum samples with reactor neutrons at 4.6 OK. At the same time structural lattice defects are formed. Using the Mossbauer effect of AulS7, the Debye-Waller factor of the gold atoms is measured. A reduction of up to approximately 10% in the Debye-Waller factor is found, which is attributed t o irradiation-produced defects. This behaviour is interpreted in terms of an interaction of defects formed by thermal and fast neutrons. A change of the coupling constant of the Aulg7 atom to its neighbours is assumed to be responsible for the reduction of the Debye-Waller factor.Durch Bestrahlung von Platinproben mit Reaktorneutronen bei 4,6 OK wird PtlS7 erzeugt, das mit 20 h Halbwertszeit zu AulS7 zerfiillt. Zugleich werden Gitterdefekte gebildet. Mit Hilfe des Mossbauer-Effekts von Ads7 werden Messungen des Debye-Waller-Faktors der Goldatome durchgefiihrt. Sie ergeben eine Erniedrigung des Debye-Waller-Faktors um bis zu ca. loyo, die dem Auftreten bestrahlungs-erzeugter Defekte zugeschrieben wird. Dieses Verhalten wird mit dem Zusammenwirken von durch thermische und durch schnelle Neutronen erzeugten Defekten gedeutet. Es wird angenommen, daD eine h d e r u n g der Kopplungskonstanten des AulS?-Atoms fur die Erniedrigung des Debye-Waller-Faktors verantwortlich ist.

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Point-Defect Studies in Platinum by Electron Irradiation at Low Temperatures. I. Defect Production

Cited by 29 publications

References 16 publications

Influence of Plastic Deformation and of Substitutional Gold on Defect Production and Recovery in Platinum

Influence of Plastic Deformation and of Substitutional Gold on Defect Production and Recovery in Platinum

Vacancies, divacancies, and self‐diffusion in platinum

Mössbauer Measurements of the Debye‐Waller Factor of Gold in Platinum after Low‐Temperature Neutron Irradiation

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