Fabrication, magnetic and luminescent properties of CoFe2O 4@SiO2@Y2O3:Dy3+ composites

Xiaozhen Ren; Lizhu Tong; Xiaodong Chen; Hong Ding; Hua Yang

doi:10.1016/j.jallcom.2013.11.102

Fabrication, magnetic and luminescent properties of CoFe₂O ₄@SiO₂@Y₂O₃:Dy³⁺ composites

Xiaozhen Ren, Lizhu Tong, Xiaodong Chen, Hong Ding, Hua Yang^*

^*Corresponding author for this work

Jilin University

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Depositing the luminescent Y₂O₃:Dy³⁺ onto the surface of ferrimagnetic CoFe₂O₄@SiO₂ composites obtains the difunctional CoFe₂O₄@SiO ₂@Y₂O₃:Dy³⁺ nanoparticles. In spite to keeping the yellow luminescence property (⁴F_9/2 → ₆H_13/2 in 572 nm), the nanoparticles display the strongest luminescent intensity at 600 C of calcination temperature due to the influence of ferrimagnetic CoFe₂O₄ particles. The increasing of maturation magnetization (Ms) and the nearly unchanging of coercivity (Hc) in the nanoparticles with the increasing calcination temperature can be contribute to the increasing of CoFe₂O₄ particles size. By altering annealing temperature, the mass rate of Y₂O₃:Dy ³⁺ over CoFe₂O₄@SiO₂, and the doping concentration of Dy³⁺, the size, the magnetic, and luminescence properties of nanoparticles can be controlled.

Original language	English
Pages (from-to)	76-81
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	589
DOIs	https://doi.org/10.1016/j.jallcom.2013.11.102
Publication status	Published - Mar 15 2014
Externally published	Yes

ASJC Scopus Subject Areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Keywords

Core-shell structure
Ferrimagnetism
Luminescence
Nanoparticles

Access to Document

10.1016/j.jallcom.2013.11.102

Cite this

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title = "Fabrication, magnetic and luminescent properties of CoFe2O 4@SiO2@Y2O3:Dy3+ composites",

abstract = "Depositing the luminescent Y2O3:Dy3+ onto the surface of ferrimagnetic CoFe2O4@SiO2 composites obtains the difunctional CoFe2O4@SiO 2@Y2O3:Dy3+ nanoparticles. In spite to keeping the yellow luminescence property (4F9/2 → 6H13/2 in 572 nm), the nanoparticles display the strongest luminescent intensity at 600 C of calcination temperature due to the influence of ferrimagnetic CoFe2O4 particles. The increasing of maturation magnetization (Ms) and the nearly unchanging of coercivity (Hc) in the nanoparticles with the increasing calcination temperature can be contribute to the increasing of CoFe2O4 particles size. By altering annealing temperature, the mass rate of Y2O3:Dy 3+ over CoFe2O4@SiO2, and the doping concentration of Dy3+, the size, the magnetic, and luminescence properties of nanoparticles can be controlled.",

keywords = "Core-shell structure, Ferrimagnetism, Luminescence, Nanoparticles",

author = "Xiaozhen Ren and Lizhu Tong and Xiaodong Chen and Hong Ding and Hua Yang",

year = "2014",

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doi = "10.1016/j.jallcom.2013.11.102",

language = "English",

volume = "589",

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journal = "Journal of Alloys and Compounds",

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T1 - Fabrication, magnetic and luminescent properties of CoFe2O 4@SiO2@Y2O3:Dy3+ composites

AU - Ren, Xiaozhen

AU - Tong, Lizhu

AU - Chen, Xiaodong

AU - Ding, Hong

AU - Yang, Hua

PY - 2014/3/15

Y1 - 2014/3/15

N2 - Depositing the luminescent Y2O3:Dy3+ onto the surface of ferrimagnetic CoFe2O4@SiO2 composites obtains the difunctional CoFe2O4@SiO 2@Y2O3:Dy3+ nanoparticles. In spite to keeping the yellow luminescence property (4F9/2 → 6H13/2 in 572 nm), the nanoparticles display the strongest luminescent intensity at 600 C of calcination temperature due to the influence of ferrimagnetic CoFe2O4 particles. The increasing of maturation magnetization (Ms) and the nearly unchanging of coercivity (Hc) in the nanoparticles with the increasing calcination temperature can be contribute to the increasing of CoFe2O4 particles size. By altering annealing temperature, the mass rate of Y2O3:Dy 3+ over CoFe2O4@SiO2, and the doping concentration of Dy3+, the size, the magnetic, and luminescence properties of nanoparticles can be controlled.

AB - Depositing the luminescent Y2O3:Dy3+ onto the surface of ferrimagnetic CoFe2O4@SiO2 composites obtains the difunctional CoFe2O4@SiO 2@Y2O3:Dy3+ nanoparticles. In spite to keeping the yellow luminescence property (4F9/2 → 6H13/2 in 572 nm), the nanoparticles display the strongest luminescent intensity at 600 C of calcination temperature due to the influence of ferrimagnetic CoFe2O4 particles. The increasing of maturation magnetization (Ms) and the nearly unchanging of coercivity (Hc) in the nanoparticles with the increasing calcination temperature can be contribute to the increasing of CoFe2O4 particles size. By altering annealing temperature, the mass rate of Y2O3:Dy 3+ over CoFe2O4@SiO2, and the doping concentration of Dy3+, the size, the magnetic, and luminescence properties of nanoparticles can be controlled.

KW - Core-shell structure

KW - Ferrimagnetism

KW - Luminescence

KW - Nanoparticles

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