Retrieval of B1 phase from high-pressure B2 phase for CdO nanoparticles by electronic excitations in CdxZn1−xO composite thin films
Arkaprava Das, Marcin Zając, Carla Bittencourt
TL;DR
This study shows how ion irradiation can recover a high-pressure phase in CdO nanoparticles within a composite thin film.
Contribution
The novel use of oxygen ion irradiation to recover the B1 phase from the B2 phase in CdO nanoparticles is demonstrated.
Findings
80 MeV oxygen ion irradiation facilitates the recovery of the B1 phase in CdO nanoparticles.
Silver ion irradiation causes complete amorphization of the B2 phase in CdO nanoparticles.
XANES and XPS confirm the structural changes in Zn2SiO4 under different irradiation conditions.
Abstract
This study investigates the recovery of the B1 phase from the high-pressure B2 phase, at atmospheric pressure, in cadmium oxide (CdO) nanoparticles incorporated within sol–gel synthesized CdxZn1−xO (x = 0.40) composite thin films. The recovery process is investigated using electronic excitations as an effective tool. Exposure to 120 MeV silver ion irradiation results in the complete amorphization of the B2 phase in CdO nanoparticles, while the crystalline hexagonal wurtzite phase of zinc oxide (ZnO) remains intact. In contrast, 80 MeV oxygen ion irradiation preserves the B2 phase and facilitates the reemergence of the B1 phase. The partial damage caused by electronic energy loss during oxygen ion irradiation in the willemite Zn2SiO4 phase is identified as a trigger for the B1 to B2 phase transformation in CdO nanoparticles, enabling the recovery of the B1 phase. The diminishing local…
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Taxonomy
TopicsZnO doping and properties · Quantum Dots Synthesis And Properties · Copper-based nanomaterials and applications