Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 547, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2021.168944
Keywords
Diluted magnetic semiconductor; Indium oxide; Iron-doped; Freeze-drying; Mossbauer spectroscopy; Nanoparticles
Funding
- CNPq/Fundacao Araucaria [PRONEX 46824]
- SQUID-UFSCAR_QD_MPMS3 [FAPESP 09/54082-2]
- Incorporacion de Investigadores program CONCYTEC-FONDECYT. UNMSM [12-2019-FONDECYT BM-INC-INV.]
Ask authors/readers for more resources
Monophasic nanoparticles of (In1-xFex)(2)O-3 were prepared by freeze-drying and heat treatment, where iron cations substituted for indium cations in the oxide matrix. Different magnetic behaviors were observed at varying temperatures, correlating with iron magnetic moments.
(In1-xFex)(2)O-3 monophasic nanoparticles were prepared by a freeze-drying process followed by heat treatment after which they were characterized by magnetization measurements and Mo & BULL;ssbauer spectroscopy at tempera-tures ranging from 300 to 4.2 K. The iron cations were trivalent and substituted for the indium cations in both cationic sites, 24d and 8b, of the oxide matrix, showing an occupancy preference that depends on x. Two different magnetic regimes were observed after varying the temperature of the doped samples, and both correlated with the iron magnetic moments. At room temperature, the moments at the site 24d were partially ordered with ferromagnetic alignment, whereas those at the site 8b showed paramagnetic behavior. After decreasing the temperature, both sublattices become progressively ordered and more robustly below 50 K.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available