Surface ferromagnetism of Pd fine particles

We report clear evidence of the ferromagnetism of gas-evaporated Pd fine particles with a clean surface. The clean Pd particle is found to have a magnetic heterostructure: the surface of the particle is ferromagnetic and the rest is paramagnetic. The size dependence of the magnetic saturation compon...

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Bibliographic Details
Published in:Physical review letters 2003-11, Vol.91 (19), p.197201-197201, Article 197201
Main Authors: Shinohara, T, Sato, T, Taniyama, T
Format: Article
Language:English
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Summary:We report clear evidence of the ferromagnetism of gas-evaporated Pd fine particles with a clean surface. The clean Pd particle is found to have a magnetic heterostructure: the surface of the particle is ferromagnetic and the rest is paramagnetic. The size dependence of the magnetic saturation component reveals that the ferromagnetic ordering occurs only on (100) facets of the particle and that the topmost two to five layers from the surface contribute to the ferromagnetism with a magnetic moment of (0.75+/-0.31)micro(B)/atom.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.91.197201