Abstract
A model of knock-out of oxygen by charged particle (α and proton) irradiation of Bi2Sr2CaCu2O8+x (Bi-2212) is proposed on the basis of Monte Carlo TRIM calculations. In Bi-2212, the loosely bound excess oxygen is vulnerable to be displaced by particle irradiation. Binding energy and hence, displacement energy of this loosely bound excess oxygen is less compared to that of stoichiometric lattice bound oxygen and other atoms. The displaced or knocked out oxygen goes to pores or intergranular region and generates large pressure inside the sample. Because of porosity of the material, this displaced oxygen diffuses out and there is a net reduction of oxygen content of the sample. The irradiation induced oxygen knock-out is dominant in the bulk where nonionizing energy loss is maximum.
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Bandyopadhyay, S.K., Sen, P., Barat, P. et al. A model of knock-out of oxygen by charged particle irradiation of Bi-2212. Pramana - J Phys 47, 309–315 (1996). https://doi.org/10.1007/BF02848530
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DOI: https://doi.org/10.1007/BF02848530