Positron Annihilation in Solid and Liquid Bi_{40}Sn_{60} Alloy

• Authors: St. Chabik , W. Rudzińska , M. Szuszkiewicz , Cz. Szymański
• Languages of publication: EN

Abstracts

EN

The peak counting rate, F(T), for Bi_{40}Sn_{60} alloy in the temperature range from room temperature to 400°C was measured in three consecutive heating-cooling runs. Significant changes in F(T) were observed in the temperature interval between the solidus and liquidus temperature. The magnitude of these anomalies systematically diminishes in consecutive heating-cooling runs. Noticeable changes of values of F(T) parameter in the liquid alloy were observed, too. These effects were connected with trapping of positrons at the grain boundaries-defects and in the short-range ordered regions in the liquid alloy. Also microscopic structure of sample before and after measurements cycles was observed.

Keywords

EN

64.70.Dv; 61.72.Cc; 78.70.Bj

Discipline

• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)
• 61.72.Cc: Kinetics of defect formation and annealing

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1999
• Volume: 95
• Issue: 4
• Pages: 479-482

Dates

published

1999-04

Contributors

author

St. Chabik

• Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland

author

W. Rudzińska

• Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland

author

M. Szuszkiewicz

• Institute of Experimental Physics, Wrocław University, Pl. Maxa Borna 9, 50-204 Wrocław, Poland

author

Cz. Szymański

• Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland

Identifiers

DOI

10.12693/APhysPolA.95.479