The effect of Er doping on local structure of magnetite nanoparticles

Author(s)

Rodrigues, Priscila S. ; Burimova, Anastasia ; Sales, Tatiane S. N. ; Filho, Arnaldo A. M. ; Otubo, Larissa ; Saxena, Rajendra N. ; Carbonari, Artur W.

• Document type: Journal article
• Source: HYPERFINE INTERACTIONS; v. 242, n. 1, p. 6-pg., 2021-12-01.

Abstract

In this work Fe3O4:Er nanoparticles (NPs) with the characteristic size of similar to 11 nm were synthesized via classic co-precipitation method. Electron microscopy and X-ray diffraction were employed to probe the morphology and structure of the samples. Results revealed that samples synthesized in the Fd-3mZ structure with lattice constant close to that of pure magnetite. In-111 probe generator was incorporated at synthesis in order to map the evolution of hyperfine magnetic field with temperature using time differential perturbed angular correlation (TDPAC) spectroscopy. The TDPAC results are discussed in terms of the effect of Er dopant on the magnetic properties and local structure of the NPs. (AU)

• FAPESP's process: 19/15620-0 - Tuning MFe2O4 (M=Co,Ni) nanoparticles for in vivo biomedical applications: Doping with rare earths and biocompatible coating
• Grantee: Anastasia Nikolaevna Burimova
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 17/50332-0 - Scientific, technological and infrastructure qualification in radiopharmaceuticals, radiation and entrepreneurship for health purposes (PDIp)
• Grantee: Marcelo Linardi
• Support Opportunities: Research Grants - State Research Institutes Modernization Program