Электронный каталог

Статья

Abdullaev, A.
Impact of Swift Heavy Ion-Induced Point Defects on Nanoscale Thermal Transport in ZnO / A.Abdullaev, R.Rymzhanov, V.Skuratov, [et al.] // Materials Research Bulletin [Electronic resource]. – 2024. – Vol. 175. – P. 112786. – URL: https://doi.org/10.1016/j.materresbull.2024.112786. – Bibliogr.: 67.

Near-surface nanoscale thermal conductivity (k) variation of ion-irradiated single-crystalline ZnO was studied by time-domain thermoreflectance. ZnO was irradiated by 710 MeV Bi swift heavy ions (SHI) in the 10*1*0–10*1*3 ion/cm*2 fluence range to investigate the progression of radiation damage both from single ion impacts and ion path overlapping regimes. Structural characterization using X-ray diffraction, Raman spectroscopy, and transmission electron microscopy indicated the absence of amorphization. The degradation in k was attributed primarily due to phonon scattering on point defects. The results of measured were used to validate several models including the semi-analytical Klemens-Callaway model, and a novel hybrid modeling approach based on the Monte-Carlo code TREKIS coupled with molecular dynamics simulations which captures the effects of single ion and ion path overlapping regimes, respectively. The findings promote a novel approach to developing radiation-controlled thermally functional materials.



Спец.(статьи,препринты) = С 349.1 - Действие излучения на материалы$
ОИЯИ = ОИЯИ (JINR)2024
Бюллетени = 33/024