Enhanced Crystalline and Magnetic Properties of Co-Doped TiO2 Films Grown by Ultraviolet-Assisted Pulsed Laser Deposition

Hyuck Soo Yang; Jaeyoung Choi; Sun Ju Song; Rajiv K. Singh

doi:10.1149/1.1625811

Enhanced Crystalline and Magnetic Properties of Co-Doped TiO₂ Films Grown by Ultraviolet-Assisted Pulsed Laser Deposition

Hyuck Soo Yang, Jaeyoung Choi, Sun Ju Song, Rajiv K. Singh

University of Florida

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

6 Scopus citations

Abstract

Using in situ ultraviolet irradiation during pulsed laser deposition (UVPLD), enhanced magnetic properties (larger remanence and coercivity) were obtained in Co-doped anatase TiO₂ films. The UVPLD grown films exhibited smaller full width at half-maximum value for the (004) peak of the Co-doped TiO₂ layer, indicating higher crystallinity. No superparamagnetic behavior was examined in the zero field cooled/field cooled measurements, suggesting an intrinsic diluted magnetic semiconductor characteristic. X-ray photoelectron spectroscopy results indicated that the cobalt in the films was in the +2 formal oxidation state and a much stronger binding coordination between oxygen and cations (Co and Ti) was inferred in the UVPLD grown films.

Original language	English
Pages (from-to)	C4-C6
Journal	Electrochemical and Solid-State Letters
Volume	7
Issue number	1
DOIs	https://doi.org/10.1149/1.1625811
State	Published - 2004
Externally published	Yes

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abstract = "Using in situ ultraviolet irradiation during pulsed laser deposition (UVPLD), enhanced magnetic properties (larger remanence and coercivity) were obtained in Co-doped anatase TiO2 films. The UVPLD grown films exhibited smaller full width at half-maximum value for the (004) peak of the Co-doped TiO2 layer, indicating higher crystallinity. No superparamagnetic behavior was examined in the zero field cooled/field cooled measurements, suggesting an intrinsic diluted magnetic semiconductor characteristic. X-ray photoelectron spectroscopy results indicated that the cobalt in the films was in the +2 formal oxidation state and a much stronger binding coordination between oxygen and cations (Co and Ti) was inferred in the UVPLD grown films.",

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AU - Song, Sun Ju

AU - Singh, Rajiv K.

PY - 2004

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N2 - Using in situ ultraviolet irradiation during pulsed laser deposition (UVPLD), enhanced magnetic properties (larger remanence and coercivity) were obtained in Co-doped anatase TiO2 films. The UVPLD grown films exhibited smaller full width at half-maximum value for the (004) peak of the Co-doped TiO2 layer, indicating higher crystallinity. No superparamagnetic behavior was examined in the zero field cooled/field cooled measurements, suggesting an intrinsic diluted magnetic semiconductor characteristic. X-ray photoelectron spectroscopy results indicated that the cobalt in the films was in the +2 formal oxidation state and a much stronger binding coordination between oxygen and cations (Co and Ti) was inferred in the UVPLD grown films.

AB - Using in situ ultraviolet irradiation during pulsed laser deposition (UVPLD), enhanced magnetic properties (larger remanence and coercivity) were obtained in Co-doped anatase TiO2 films. The UVPLD grown films exhibited smaller full width at half-maximum value for the (004) peak of the Co-doped TiO2 layer, indicating higher crystallinity. No superparamagnetic behavior was examined in the zero field cooled/field cooled measurements, suggesting an intrinsic diluted magnetic semiconductor characteristic. X-ray photoelectron spectroscopy results indicated that the cobalt in the films was in the +2 formal oxidation state and a much stronger binding coordination between oxygen and cations (Co and Ti) was inferred in the UVPLD grown films.

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Enhanced Crystalline and Magnetic Properties of Co-Doped TiO₂ Films Grown by Ultraviolet-Assisted Pulsed Laser Deposition

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