Unconventional Disorder by Femtosecond Laser Irradiation in Fe₂O₃.

ABSTRACT: This paper demonstrates that femtosecond laser-irradiated Fe₂O₃ materials containing a mixture of α-Fe₂O₃ and ε-Fe₂O₃ phases showed significant improvement in their photoelectrochemical performance and magnetic and optical properties. The absence of Raman-active vibrational modes in the irradiated samples and the changes in charge carrier emission observed in the photocurrent density results indicate an increase in the density of defects and distortions in the crystalline lattice when compared to the nonirradiated ones. The magnetization measurements at room temperature for the nonirradiated samples revealed a weak ferromagnetic behavior, whereas the irradiated samples exhibited a strong one. The optical properties showed a

SUBMITTER: Souza JC 

PROVIDER: S-EPMC8552326 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature