Positron annihilation studies in Li-implanted alumina

11th International Workshop on Positron and Positronium Chemistry

物理学;化学

Gaikwad, Prashant V.^1,2 ; Sharma, S.K.^2 ; Mukherjee, S.^2 ; Sudarshan, K.^2 ; Maheshwari, P.^2 ; Pujari, P.K.^2 ; Kshirsagar, A.^1

Department of Physics, Savitribai Phule Pune University, Pune

411007, India^1

Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai

400085, India^2

关键词: Annealed samples;    Annealing temperatures;    Cluster formations;    Depth dependents;    Doppler broadening of annihilation radiations;    Implantation depth;    Ion implanted;    Isochronal annealing;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/618/1/012017/pdf
DOI  :  10.1088/1742-6596/618/1/012017

来源: IOP

【 摘 要 】

Depth dependent Doppler broadening of annihilation radiation (DBAR) measurements are carried out for a sample of Li ion implanted in alumina. The effect of Li ion implantation and the subsequent isochronal annealing at the temperatures up to 1100 °C on the Doppler broadening annihilation parameters (S-parameter) are studied. The S-parameter around the Li implantation depth (∼191 nm) increased with annealing temperature up to 700 °C and reduced beyond. The results suggest possible Li cluster formation in annealed sample.