Raman studies of Ti1-xFexO2 nano-particles

Nguyen Van Minh; Dao Hai Long; Nguyen The Khoi; Sung Jin Kim; In Sang Yang

doi:10.1109/NMDC.2006.4388803

Raman studies of Ti_1-xFe_xO₂ nano-particles

Nguyen Van Minh, Dao Hai Long, Nguyen The Khoi, Sung Jin Kim, In Sang Yang

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Ti_1-xFe_xO₂ (x=0.00-0.13) nano-particles were prepared by hydrolysis method and characterized by SEM, TEM, XRD, and magnetization measurements (VSM). We investigated the effects of Fe doping on the structure of the Ti_1-xFe_xO₂ system by Raman scattering studies. SEM, TEM and XRD measurements show that the particle size of the powder is in nano-scale, and that the magnetic Fe impurities substitute for the Ti sites in the anatase TiO₂ phase. All the samples with x>0 were found to be superparamagnetic at room temperature. Raman spectra show no iron-oxide peak at around 610 cm^-1, strongly supporting that the Fe atoms go into the Ti-site in TiO₂ of nano-particles. However, for the ceramic samples, one additional Raman peaks at around 610 cm ^-1 are observed. This may be related to the clusters or disorders created by mixture of various valence state of Fe ions. This may explain the existence if ferromagnetism in the ceramic Ti_1-xFe_xO ₂ system, but none in the Ti_1-xFe_xO₂ nano-particles.

Original language	English
Title of host publication	2006 IEEE Nanotechnology Materials and Devices Conference, NMDC
Pages	434-435
Number of pages	2
DOIs	https://doi.org/10.1109/NMDC.2006.4388803
State	Published - 2006
Event	2006 IEEE Nanotechnology Materials and Devices Conference, NMDC - Gyeongju, Korea, Republic of Duration: 22 Oct 2006 → 25 Oct 2006

Publication series

Name	2006 IEEE Nanotechnology Materials and Devices Conference, NMDC
Volume	1

Conference

Conference	2006 IEEE Nanotechnology Materials and Devices Conference, NMDC
Country/Territory	Korea, Republic of
City	Gyeongju
Period	22/10/06 → 25/10/06

Keywords

Anatase
Diluted magnetic semiconductors
Nano-particle
Raman spectroscopy

Access to Document

10.1109/NMDC.2006.4388803

Cite this

@inproceedings{4030423da368445eb079bddd88484766,

title = "Raman studies of Ti1-xFexO2 nano-particles",

abstract = "Ti1-xFexO2 (x=0.00-0.13) nano-particles were prepared by hydrolysis method and characterized by SEM, TEM, XRD, and magnetization measurements (VSM). We investigated the effects of Fe doping on the structure of the Ti1-xFexO2 system by Raman scattering studies. SEM, TEM and XRD measurements show that the particle size of the powder is in nano-scale, and that the magnetic Fe impurities substitute for the Ti sites in the anatase TiO2 phase. All the samples with x>0 were found to be superparamagnetic at room temperature. Raman spectra show no iron-oxide peak at around 610 cm-1, strongly supporting that the Fe atoms go into the Ti-site in TiO2 of nano-particles. However, for the ceramic samples, one additional Raman peaks at around 610 cm -1 are observed. This may be related to the clusters or disorders created by mixture of various valence state of Fe ions. This may explain the existence if ferromagnetism in the ceramic Ti1-xFexO 2 system, but none in the Ti1-xFexO2 nano-particles.",

keywords = "Anatase, Diluted magnetic semiconductors, Nano-particle, Raman spectroscopy",

author = "{Van Minh}, Nguyen and Long, {Dao Hai} and Khoi, {Nguyen The} and Kim, {Sung Jin} and Yang, {In Sang}",

year = "2006",

doi = "10.1109/NMDC.2006.4388803",

language = "English",

isbn = "1424405408",

series = "2006 IEEE Nanotechnology Materials and Devices Conference, NMDC",

pages = "434--435",

booktitle = "2006 IEEE Nanotechnology Materials and Devices Conference, NMDC",

note = "2006 IEEE Nanotechnology Materials and Devices Conference, NMDC ; Conference date: 22-10-2006 Through 25-10-2006",

}

Van Minh, N, Long, DH, Khoi, NT, Kim, SJ & Yang, IS 2006, Raman studies of Ti_1-xFe_xO₂ nano-particles. in 2006 IEEE Nanotechnology Materials and Devices Conference, NMDC., 4388803, 2006 IEEE Nanotechnology Materials and Devices Conference, NMDC, vol. 1, pp. 434-435, 2006 IEEE Nanotechnology Materials and Devices Conference, NMDC, Gyeongju, Korea, Republic of, 22/10/06. https://doi.org/10.1109/NMDC.2006.4388803

Raman studies of Ti_1-xFe_xO₂ nano-particles. / Van Minh, Nguyen; Long, Dao Hai; Khoi, Nguyen The et al.
2006 IEEE Nanotechnology Materials and Devices Conference, NMDC. 2006. p. 434-435 4388803 (2006 IEEE Nanotechnology Materials and Devices Conference, NMDC; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Long, Dao Hai

AU - Khoi, Nguyen The

AU - Kim, Sung Jin

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N2 - Ti1-xFexO2 (x=0.00-0.13) nano-particles were prepared by hydrolysis method and characterized by SEM, TEM, XRD, and magnetization measurements (VSM). We investigated the effects of Fe doping on the structure of the Ti1-xFexO2 system by Raman scattering studies. SEM, TEM and XRD measurements show that the particle size of the powder is in nano-scale, and that the magnetic Fe impurities substitute for the Ti sites in the anatase TiO2 phase. All the samples with x>0 were found to be superparamagnetic at room temperature. Raman spectra show no iron-oxide peak at around 610 cm-1, strongly supporting that the Fe atoms go into the Ti-site in TiO2 of nano-particles. However, for the ceramic samples, one additional Raman peaks at around 610 cm -1 are observed. This may be related to the clusters or disorders created by mixture of various valence state of Fe ions. This may explain the existence if ferromagnetism in the ceramic Ti1-xFexO 2 system, but none in the Ti1-xFexO2 nano-particles.

AB - Ti1-xFexO2 (x=0.00-0.13) nano-particles were prepared by hydrolysis method and characterized by SEM, TEM, XRD, and magnetization measurements (VSM). We investigated the effects of Fe doping on the structure of the Ti1-xFexO2 system by Raman scattering studies. SEM, TEM and XRD measurements show that the particle size of the powder is in nano-scale, and that the magnetic Fe impurities substitute for the Ti sites in the anatase TiO2 phase. All the samples with x>0 were found to be superparamagnetic at room temperature. Raman spectra show no iron-oxide peak at around 610 cm-1, strongly supporting that the Fe atoms go into the Ti-site in TiO2 of nano-particles. However, for the ceramic samples, one additional Raman peaks at around 610 cm -1 are observed. This may be related to the clusters or disorders created by mixture of various valence state of Fe ions. This may explain the existence if ferromagnetism in the ceramic Ti1-xFexO 2 system, but none in the Ti1-xFexO2 nano-particles.

KW - Anatase

KW - Diluted magnetic semiconductors

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