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Title: Pd nanoparticle embedded with only one Co atom behaves as a single-particle magnet
Authors: Ito, Y.
Miyazaki, A.
Fukui, K.-I.
Valiyaveettil, S. 
Yokoyama, T.
Enoki, T.
Keywords: Co-Pd nanoparticle
Exchange enhancement
Giant magnetic moment
Single-particle magnet
Issue Date: Oct-2008
Citation: Ito, Y., Miyazaki, A., Fukui, K.-I., Valiyaveettil, S., Yokoyama, T., Enoki, T. (2008-10). Pd nanoparticle embedded with only one Co atom behaves as a single-particle magnet. Journal of the Physical Society of Japan 77 (10) : -. ScholarBank@NUS Repository.
Abstract: Single molecular magnets and single-particle magnets have been intensively investigated from the viewpoints of spintronics devices. We employ the giant magnetic moment effect on magnetic impurities embedded in Pd in designing a single-nanoparticle magnet. A transition metal magnetic impurity such as Co has a giant magnetic moment in Pd metal due to the exchange enhancement effect. As the interaction range of the effect is ca. 1 nm from the magnetic impurity center, all Pd atoms are spin-polarized in a Pd nanoparticle having a radius smaller than the range. Here, we unveil this feature experimentally and show that a Pd nanoparticle containing only one Co atom exhibits a single-domain nanomagnet behavior with a blocking temperature of 3K. ©2008 The Physical Society of Japan.
Source Title: Journal of the Physical Society of Japan
ISSN: 00319015
DOI: 10.1143/JPSJ.77.103701
Appears in Collections:Staff Publications

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