Optical and magnetic properties of elliptical hematite (α-Fe2O3) nanoparticles coated with uniform continuous layers of silica of different thickness

Jen Bin Shi; Chia-Wei Lee; Jhe Wei Guo; Min Jung Cheng; Chien Wu; Chih Jung Chen; Cheng Yu Chen; Ya Ting Lin; Chung Chieh Chang

doi:10.1016/j.matlet.2007.04.045

Optical and magnetic properties of elliptical hematite (α-Fe₂O₃) nanoparticles coated with uniform continuous layers of silica of different thickness

Jen Bin Shi, Chia-Wei Lee, Jhe Wei Guo, Min Jung Cheng, Chien Wu, Chih Jung Chen, Cheng Yu Chen, Ya Ting Lin, Chung Chieh Chang

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

29 Citations (Scopus)

Abstract

Elliptical-type α-Fe₂O₃ nanoparticles with/without silica shell have been prepared. The core particles were coated with uniform continuous layers of silica of two different thicknesses by hydrolysis of TEOS. The obtained HCP structure elliptical α-Fe₂O₃ nanoparticles with ∼ 240 nm length and 100 nm width is polycrystalline in nature. The thicknesses of SiO₂ shell coated on α-Fe₂O₃ are about 55 and 30 nm, respectively. The optical and magnetic properties of these nanoparticles have been investigated.

Original language	English
Pages (from-to)	5268-5270
Number of pages	3
Journal	Materials Letters
Volume	61
Issue number	30
DOIs	https://doi.org/10.1016/j.matlet.2007.04.045
Publication status	Published - Dec 2007
Externally published	Yes

Keywords

Elliptical α-FeO nanoparticles
Magnetic materials
Nanomaterials
Optical properties

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.matlet.2007.04.045

Cite this

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title = "Optical and magnetic properties of elliptical hematite (α-Fe2O3) nanoparticles coated with uniform continuous layers of silica of different thickness",

abstract = "Elliptical-type α-Fe2O3 nanoparticles with/without silica shell have been prepared. The core particles were coated with uniform continuous layers of silica of two different thicknesses by hydrolysis of TEOS. The obtained HCP structure elliptical α-Fe2O3 nanoparticles with ∼ 240 nm length and 100 nm width is polycrystalline in nature. The thicknesses of SiO2 shell coated on α-Fe2O3 are about 55 and 30 nm, respectively. The optical and magnetic properties of these nanoparticles have been investigated.",

keywords = "Elliptical α-FeO nanoparticles, Magnetic materials, Nanomaterials, Optical properties",

author = "Shi, {Jen Bin} and Chia-Wei Lee and Guo, {Jhe Wei} and Cheng, {Min Jung} and Chien Wu and Chen, {Chih Jung} and Chen, {Cheng Yu} and Lin, {Ya Ting} and Chang, {Chung Chieh}",

note = "Funding Information: The research was supported by the National Science Council of R.O.C. under grant Nos. NSC94-2112-M-035-004 and NSC95-2112-M-035-003. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2007",

month = dec,

doi = "10.1016/j.matlet.2007.04.045",

language = "English",

volume = "61",

pages = "5268--5270",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

number = "30",

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T1 - Optical and magnetic properties of elliptical hematite (α-Fe2O3) nanoparticles coated with uniform continuous layers of silica of different thickness

AU - Shi, Jen Bin

AU - Lee, Chia-Wei

AU - Guo, Jhe Wei

AU - Cheng, Min Jung

AU - Wu, Chien

AU - Chen, Chih Jung

AU - Chen, Cheng Yu

AU - Lin, Ya Ting

AU - Chang, Chung Chieh

N1 - Funding Information: The research was supported by the National Science Council of R.O.C. under grant Nos. NSC94-2112-M-035-004 and NSC95-2112-M-035-003. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2007/12

Y1 - 2007/12

N2 - Elliptical-type α-Fe2O3 nanoparticles with/without silica shell have been prepared. The core particles were coated with uniform continuous layers of silica of two different thicknesses by hydrolysis of TEOS. The obtained HCP structure elliptical α-Fe2O3 nanoparticles with ∼ 240 nm length and 100 nm width is polycrystalline in nature. The thicknesses of SiO2 shell coated on α-Fe2O3 are about 55 and 30 nm, respectively. The optical and magnetic properties of these nanoparticles have been investigated.

AB - Elliptical-type α-Fe2O3 nanoparticles with/without silica shell have been prepared. The core particles were coated with uniform continuous layers of silica of two different thicknesses by hydrolysis of TEOS. The obtained HCP structure elliptical α-Fe2O3 nanoparticles with ∼ 240 nm length and 100 nm width is polycrystalline in nature. The thicknesses of SiO2 shell coated on α-Fe2O3 are about 55 and 30 nm, respectively. The optical and magnetic properties of these nanoparticles have been investigated.

KW - Elliptical α-FeO nanoparticles

KW - Magnetic materials

KW - Nanomaterials

KW - Optical properties

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