Fe-doped La0.5 Sr0.5 Ti O3-δ nanoparticles: A diluted magnetic oxide system

Santi Maensiri; Kwanruthai Wongsaprom; Ekaphan Swatsitang; Supapan Seraphin

doi:10.1063/1.2786674

Fe-doped La0.5 Sr0.5 Ti O3-δ nanoparticles: A diluted magnetic oxide system

Santi Maensiri, Kwanruthai Wongsaprom, Ekaphan Swatsitang, Supapan Seraphin

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

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Abstract

We report room-temperature ferromagnetism in ∼11.4-14.6 nm nanoparticles of La0.5 Sr0.5 Ti0.985 Fe0.015 O3-δ. Nanoparticles of undoped and Fe-doped samples were synthesized by a polymerized complex method and were characterized using x-ray diffraction, transmission electron microscopy, and vibrating-sample magnetometer. The undoped samples exhibit a diamagnetic behavior, whereas the Fe-doped samples are ferromagnetic having the specific magnetizations of 0.041-0.101 emug at 10 kOe. Our results indicate that the ferromagnetic property of La0.5 Sr0.5 Ti0.985 Fe0.015 O3-δ system is intrinsic and is not a result of any secondary magnetic phase or cluster formation. The finding of room-temperature ferromagnetism in this system would stimulate further interest in the area of diluted magnetic oxides.

Original language	English (US)
Article number	076110
Journal	Journal of Applied Physics
Volume	102
Issue number	7
DOIs	https://doi.org/10.1063/1.2786674
State	Published - 2007
Externally published	Yes

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General Physics and Astronomy

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@article{df37b553e8774e5d9d438eafc7a6cdf4,

title = "Fe-doped La0.5 Sr0.5 Ti O3-δ nanoparticles: A diluted magnetic oxide system",

abstract = "We report room-temperature ferromagnetism in ∼11.4-14.6 nm nanoparticles of La0.5 Sr0.5 Ti0.985 Fe0.015 O3-δ. Nanoparticles of undoped and Fe-doped samples were synthesized by a polymerized complex method and were characterized using x-ray diffraction, transmission electron microscopy, and vibrating-sample magnetometer. The undoped samples exhibit a diamagnetic behavior, whereas the Fe-doped samples are ferromagnetic having the specific magnetizations of 0.041-0.101 emug at 10 kOe. Our results indicate that the ferromagnetic property of La0.5 Sr0.5 Ti0.985 Fe0.015 O3-δ system is intrinsic and is not a result of any secondary magnetic phase or cluster formation. The finding of room-temperature ferromagnetism in this system would stimulate further interest in the area of diluted magnetic oxides.",

author = "Santi Maensiri and Kwanruthai Wongsaprom and Ekaphan Swatsitang and Supapan Seraphin",

note = "Funding Information: The authors would like to thank the Department of Chemistry, Khon Kaen University for providing VSM facilities. This work was supported by The National Nanotechnology Center (NANOTEC), Thailand.",

year = "2007",

doi = "10.1063/1.2786674",

language = "English (US)",

volume = "102",

journal = "Journal of Applied Physics",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Fe-doped La0.5 Sr0.5 Ti O3-δ nanoparticles

T2 - A diluted magnetic oxide system

AU - Maensiri, Santi

AU - Wongsaprom, Kwanruthai

AU - Swatsitang, Ekaphan

AU - Seraphin, Supapan

N1 - Funding Information: The authors would like to thank the Department of Chemistry, Khon Kaen University for providing VSM facilities. This work was supported by The National Nanotechnology Center (NANOTEC), Thailand.

PY - 2007

Y1 - 2007

N2 - We report room-temperature ferromagnetism in ∼11.4-14.6 nm nanoparticles of La0.5 Sr0.5 Ti0.985 Fe0.015 O3-δ. Nanoparticles of undoped and Fe-doped samples were synthesized by a polymerized complex method and were characterized using x-ray diffraction, transmission electron microscopy, and vibrating-sample magnetometer. The undoped samples exhibit a diamagnetic behavior, whereas the Fe-doped samples are ferromagnetic having the specific magnetizations of 0.041-0.101 emug at 10 kOe. Our results indicate that the ferromagnetic property of La0.5 Sr0.5 Ti0.985 Fe0.015 O3-δ system is intrinsic and is not a result of any secondary magnetic phase or cluster formation. The finding of room-temperature ferromagnetism in this system would stimulate further interest in the area of diluted magnetic oxides.

AB - We report room-temperature ferromagnetism in ∼11.4-14.6 nm nanoparticles of La0.5 Sr0.5 Ti0.985 Fe0.015 O3-δ. Nanoparticles of undoped and Fe-doped samples were synthesized by a polymerized complex method and were characterized using x-ray diffraction, transmission electron microscopy, and vibrating-sample magnetometer. The undoped samples exhibit a diamagnetic behavior, whereas the Fe-doped samples are ferromagnetic having the specific magnetizations of 0.041-0.101 emug at 10 kOe. Our results indicate that the ferromagnetic property of La0.5 Sr0.5 Ti0.985 Fe0.015 O3-δ system is intrinsic and is not a result of any secondary magnetic phase or cluster formation. The finding of room-temperature ferromagnetism in this system would stimulate further interest in the area of diluted magnetic oxides.

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DO - 10.1063/1.2786674

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JF - Journal of Applied Physics

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ER -

Fe-doped La0.5 Sr0.5 Ti O3-δ nanoparticles: A diluted magnetic oxide system

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