Room temperature ferromagnetism in Fe-doped CeO 2 nanoparticles

Santi Maensiri; Sumalin Phokha; Paveena Laokul; Supapan Seraphin

doi:10.1166/jnn.2009.1372

Room temperature ferromagnetism in Fe-doped CeO ₂ nanoparticles

Santi Maensiri, Sumalin Phokha, Paveena Laokul, Supapan Seraphin

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

18 Scopus citations

Abstract

RT ferromagnetism was observed in nanoparticles of Fe-doped CeO ₂ (i.e., Ce _0.97Fe _0.03O ₂) synthesized by a sol-gel method. The undoped and Fe-doped CeO ₂ were characterized by XRD, Raman spectroscopy, TEM, and VSM. The undoped samples and Ce _0.97Fe _0.03O ₂ precursor exhibit a diamagnetic behavior. The 673 K-calcined Ce _0.97Fe _0.03O ₂ sample is paramagnetic whereas 773 and 873 K-calcined Ce _0.97Fe _0.03O ₂ samples are ferromagnetism having the magnetizations of 4.65 × 10 ^~3 emu/g and 6.20 × 10 ^~3 emu/g at 10 kOe, respectively. Our results indicate that the ferromagnetic property is intrinsic to the Fe-doped CeO ₂ system and is not a result of any secondary magnetic phase or cluster formation.

Original language	English (US)
Pages (from-to)	6415-6420
Number of pages	6
Journal	Journal of Nanoscience and Nanotechnology
Volume	9
Issue number	11
DOIs	https://doi.org/10.1166/jnn.2009.1372
State	Published - Nov 2009
Externally published	Yes

Keywords

Cerium oxide
Dilute magnetic semiconductor
Ferromagnetism
Magnetic properties
Nanoparticles

ASJC Scopus subject areas

Bioengineering
General Chemistry
Biomedical Engineering
General Materials Science
Condensed Matter Physics

Access to Document

10.1166/jnn.2009.1372

Cite this

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title = "Room temperature ferromagnetism in Fe-doped CeO 2 nanoparticles",

abstract = "RT ferromagnetism was observed in nanoparticles of Fe-doped CeO 2 (i.e., Ce 0.97Fe 0.03O 2) synthesized by a sol-gel method. The undoped and Fe-doped CeO 2 were characterized by XRD, Raman spectroscopy, TEM, and VSM. The undoped samples and Ce 0.97Fe 0.03O 2 precursor exhibit a diamagnetic behavior. The 673 K-calcined Ce 0.97Fe 0.03O 2 sample is paramagnetic whereas 773 and 873 K-calcined Ce 0.97Fe 0.03O 2 samples are ferromagnetism having the magnetizations of 4.65 × 10 ~3 emu/g and 6.20 × 10 ~3 emu/g at 10 kOe, respectively. Our results indicate that the ferromagnetic property is intrinsic to the Fe-doped CeO 2 system and is not a result of any secondary magnetic phase or cluster formation.",

keywords = "Cerium oxide, Dilute magnetic semiconductor, Ferromagnetism, Magnetic properties, Nanoparticles",

author = "Santi Maensiri and Sumalin Phokha and Paveena Laokul and Supapan Seraphin",

year = "2009",

month = nov,

doi = "10.1166/jnn.2009.1372",

language = "English (US)",

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journal = "Journal of Nanoscience and Nanotechnology",

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T1 - Room temperature ferromagnetism in Fe-doped CeO 2 nanoparticles

AU - Maensiri, Santi

AU - Phokha, Sumalin

AU - Laokul, Paveena

AU - Seraphin, Supapan

PY - 2009/11

Y1 - 2009/11

N2 - RT ferromagnetism was observed in nanoparticles of Fe-doped CeO 2 (i.e., Ce 0.97Fe 0.03O 2) synthesized by a sol-gel method. The undoped and Fe-doped CeO 2 were characterized by XRD, Raman spectroscopy, TEM, and VSM. The undoped samples and Ce 0.97Fe 0.03O 2 precursor exhibit a diamagnetic behavior. The 673 K-calcined Ce 0.97Fe 0.03O 2 sample is paramagnetic whereas 773 and 873 K-calcined Ce 0.97Fe 0.03O 2 samples are ferromagnetism having the magnetizations of 4.65 × 10 ~3 emu/g and 6.20 × 10 ~3 emu/g at 10 kOe, respectively. Our results indicate that the ferromagnetic property is intrinsic to the Fe-doped CeO 2 system and is not a result of any secondary magnetic phase or cluster formation.

AB - RT ferromagnetism was observed in nanoparticles of Fe-doped CeO 2 (i.e., Ce 0.97Fe 0.03O 2) synthesized by a sol-gel method. The undoped and Fe-doped CeO 2 were characterized by XRD, Raman spectroscopy, TEM, and VSM. The undoped samples and Ce 0.97Fe 0.03O 2 precursor exhibit a diamagnetic behavior. The 673 K-calcined Ce 0.97Fe 0.03O 2 sample is paramagnetic whereas 773 and 873 K-calcined Ce 0.97Fe 0.03O 2 samples are ferromagnetism having the magnetizations of 4.65 × 10 ~3 emu/g and 6.20 × 10 ~3 emu/g at 10 kOe, respectively. Our results indicate that the ferromagnetic property is intrinsic to the Fe-doped CeO 2 system and is not a result of any secondary magnetic phase or cluster formation.

KW - Cerium oxide

KW - Dilute magnetic semiconductor

KW - Ferromagnetism

KW - Magnetic properties

KW - Nanoparticles

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