TY  - JOUR
AU  - Ji, Yaqi
AU  - Kowalski, Piotr
AU  - Neumeier, Stefan
AU  - Deissmann, Guido
AU  - Kulriya, Pawan K.
AU  - Gale, Julian D.
TI  - Atomistic modeling and experimental studies of radiation damage in monazite-type LaPO$_{4}$ ceramics
JO  - Nuclear instruments & methods in physics research / B
VL  - 393
SN  - 0168-583X
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - FZJ-2016-05404
SP  - 54-58
PY  - 2017
AB  - We simulated the threshold displacement energies (EdEd), the related displacement and defect formation probabilities, and the energy barriers in LaPO4 monazite-type ceramics. The obtained EdEd values for La, P, O primary knock-on atoms (PKA) are 56 eV, 75 eV and 8 eV, respectively. We found that these energies can be correlated with the energy barriers that separate the defect from the initial states. The EdEd values are about twice the values of energy barriers, which is explained through an efficient dissipation of the PKA kinetic energy in the considered system. The computed EdEd were used in simulations of the extent of radiation damage in La0.2Gd0.8PO4 solid solution, investigated experimentally. We found that this lanthanide phosphate fully amorphises in the ion beam experiments for fluences higher than ∼1013 ions/cm2.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000394194500013
DO  - DOI:10.1016/j.nimb.2016.09.031
UR  - https://juser.fz-juelich.de/record/819817
ER  -