Gas adsorption on the surface of ferromagnetic Pd nanoparticles

Yojiro Oba; Tetsuya Sato; Takenao Shinohara

doi:10.1380/ejssnt.2006.439

Gas adsorption on the surface of ferromagnetic Pd nanoparticles

Yojiro Oba, Tetsuya Sato, Takenao Shinohara

Department of Applied Physics and Physico-Informatics

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

5 Citations (Scopus)

Abstract

The appearance of ferromagnetism in the surface regime of Pd nanoparticles was recently reported [Phys. Rev. Lett. 91, 197201 (2003)]. To experimentally confirm the surface magnetism, the effects of O₂ gas adsorption on the Pd nanoparticles are studied based on the measurements of the coverage and magnetization. The surface ferromagnetism was weakened in the samples fully covered with O₂ gas. However, the ferromagnetic moment remained after the exposure to O₂ gas. This result shows the ferromagnetism existing in the internal regime in addition to the surface magnetism.

Original language	English
Pages (from-to)	439-442
Number of pages	4
Journal	e-Journal of Surface Science and Nanotechnology
Volume	4
DOIs	https://doi.org/10.1380/ejssnt.2006.439
Publication status	Published - 2006 Apr 25

Keywords

Ferromagnetism
Magnetic measurements
Magnetic phenomena
Magnetic properties of nanostructures
Nanoparticles
Oxygen
Palladium
Powders

ASJC Scopus subject areas

Biotechnology
Bioengineering
Condensed Matter Physics
Mechanics of Materials
Surfaces and Interfaces
Surfaces, Coatings and Films

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title = "Gas adsorption on the surface of ferromagnetic Pd nanoparticles",

abstract = "The appearance of ferromagnetism in the surface regime of Pd nanoparticles was recently reported [Phys. Rev. Lett. 91, 197201 (2003)]. To experimentally confirm the surface magnetism, the effects of O2 gas adsorption on the Pd nanoparticles are studied based on the measurements of the coverage and magnetization. The surface ferromagnetism was weakened in the samples fully covered with O2 gas. However, the ferromagnetic moment remained after the exposure to O2 gas. This result shows the ferromagnetism existing in the internal regime in addition to the surface magnetism.",

keywords = "Ferromagnetism, Magnetic measurements, Magnetic phenomena, Magnetic properties of nanostructures, Nanoparticles, Oxygen, Palladium, Powders",

author = "Yojiro Oba and Tetsuya Sato and Takenao Shinohara",

year = "2006",

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T1 - Gas adsorption on the surface of ferromagnetic Pd nanoparticles

AU - Oba, Yojiro

AU - Sato, Tetsuya

AU - Shinohara, Takenao

PY - 2006/4/25

Y1 - 2006/4/25

N2 - The appearance of ferromagnetism in the surface regime of Pd nanoparticles was recently reported [Phys. Rev. Lett. 91, 197201 (2003)]. To experimentally confirm the surface magnetism, the effects of O2 gas adsorption on the Pd nanoparticles are studied based on the measurements of the coverage and magnetization. The surface ferromagnetism was weakened in the samples fully covered with O2 gas. However, the ferromagnetic moment remained after the exposure to O2 gas. This result shows the ferromagnetism existing in the internal regime in addition to the surface magnetism.

AB - The appearance of ferromagnetism in the surface regime of Pd nanoparticles was recently reported [Phys. Rev. Lett. 91, 197201 (2003)]. To experimentally confirm the surface magnetism, the effects of O2 gas adsorption on the Pd nanoparticles are studied based on the measurements of the coverage and magnetization. The surface ferromagnetism was weakened in the samples fully covered with O2 gas. However, the ferromagnetic moment remained after the exposure to O2 gas. This result shows the ferromagnetism existing in the internal regime in addition to the surface magnetism.

KW - Ferromagnetism

KW - Magnetic measurements

KW - Magnetic phenomena

KW - Magnetic properties of nanostructures

KW - Nanoparticles

KW - Oxygen

KW - Palladium

KW - Powders

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DO - 10.1380/ejssnt.2006.439

M3 - Article

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EP - 442

JO - e-Journal of Surface Science and Nanotechnology

JF - e-Journal of Surface Science and Nanotechnology

SN - 1348-0391

ER -

Gas adsorption on the surface of ferromagnetic Pd nanoparticles

Abstract

Keywords

ASJC Scopus subject areas

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