Plasma-assisted synthesis and high-resolution characterization of anisotropic elemental and bimetallic core–shell magnetic nanoparticles

• M. Hennes,
• A. Lotnyk and
• S. G. Mayr

Beilstein J. Nanotechnol. 2014, 5, 466–475, doi:10.3762/bjnano.5.54

• , which relies on (optionally pulsed) DC plasma gas condensation has been developed. We demonstrate the synthesis of elemental nickel nanoparticles with highly tunable sizes and shapes and Ni@Cu CS-NPs with an average shell thickness of 10 nm as determined with scanning electron microscopy, high

• heterostructured NP in gas condensation processes are discussed. Keywords: bimetallic magnetic nanoparticle; core–shell; magnetron sputtering; plasma gas condensation; Introduction Due to their size, novel physical properties and the possibility of contactless manipulation, magnetic nanoparticles can be employed

• heterostructured particles in plasma gas condensation setups have been performed yet [10][11][12], and many publications remain mostly focused on the tuning of size and shape of selected elemental particles [13][14][15][16][17][18][19]. When concentrating on the synthesis of CS-NPs in the gas phase, two general

Effect of large mechanical stress on the magnetic properties of embedded Fe nanoparticles

• Srinivasa Saranu,
• Sören Selve,
• Ute Kaiser,
• Luyang Han,
• Ulf Wiedwald,
• Paul Ziemann and
• Ulrich Herr

Beilstein J. Nanotechnol. 2011, 2, 268–275, doi:10.3762/bjnano.2.31

• gas condensation (PGC) chamber. Iron metal “vapour” was generated using a 2" magnetron sputter source (MAK II) which was loaded with a 99.95% pure Fe target. A continuous argon (Ar) gas stream, adjusted using a mass flow controller, was used as the sputtering gas source and also acts as a condensation

• explained by an additional magneto-elastic anisotropy which leads to an “easy plane” rather than an “easy axis”. The results may be useful for the optimization of the magnetic properties of future magnetic data storage media. Experimental Iron (Fe) nanoparticles were generated using a custom-built plasma