Vacancies, Divacancies, and Self-Diffusion in Platinum

Schumacher, Dieter; Seeger, A.; Härlin, O/

doi:10.1515/9783112496787-037

Search citation statements

Order By: Relevance

Paper Sections

Select...

Introduction1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1990

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The positron annihilation method has proved useful in studying the electronic structure of lattice defects (West 1973, Hautojarvi 1979. Many investigations on the problem of the positron-dislocation interaction have been undertaken in deformed metals.…”

Section: Introductionmentioning

confidence: 99%

The positron-dislocation interaction studied in deformed zinc single crystals

Shi¹,

Xiong²,

Lung³

1990

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The pyramidal dislocations and parallel basal dislocations induced from the deformation with compressive loading normal to the (0001) plane and to the (1012) plane of the Zn single-crystal specimen are observed by TEM. The positron lifetime experiments for the samples measured at 100 K yield two different trapping lifetimes. It is found that the lifetime tau d of positrons trapped and annihilated in basal dislocations lines increases by about 20% compared with that in bulk ( tau d=177+or-2 ps) and it is shown that a positron would be trapped in deeper traps (jogs) via the dislocation when the jog concentration along it is sufficiently high, with the annihilation lifetime close to that in a monovacancy. The intensities of the two trapping components decrease evidently with increase in temperature increasing to room temperature. The difference between positron-vacancy and positron-dislocation interactions are discussed.

show abstract

Section: Introductionmentioning

confidence: 99%