Magnetic Anisotropy of a Single Cobalt Nanocluster
Matthieu Jamet,Wolfgang Wernsdorfer,C. Thirion,Dominique Mailly,Véronique Dupuis,Patrice Mélinon,Alain Perez +6 more
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TLDR
Three-dimensional switching field measurements performed on a 3 nm cobalt cluster embedded in a niobium matrix are reported, able to separate the different magnetic anisotropy contributions and evidence the dominating role of the cluster surface.Abstract:
Using a new micro-SQUID setup, we investigate magnetic anisotropy in a single 1000-atom cobalt cluster. This system opens new fields in the characterization and understanding of the origin of magnetic anisotropy in such nanoparticles. For this purpose, we report three-dimensional switching field measurements performed on a 3 nm cobalt cluster embedded in a niobium matrix. We are able to separate the different magnetic anisotropy contributions and evidence the dominating role of the cluster surface.read more
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On the nature of metallic nanoparticles obtained from molecular Co3Ru–carbonyl clusters in mesoporous silica matrices
Fanny Schweyer-Tihay,Fanny Schweyer-Tihay,Claude Estournès,Pierre Braunstein,Jean Guille,Jean-Louis Paillaud,Mireille Richard-Plouet,Jacky Rosé +7 more
TL;DR: The impregnation of THF solutions of the low-valent heterometallic cluster NEt(4)[Co(3)Ru(CO)(12)] into two mesoporous silica matrices, amorphous xerogels and ordered MCM-41 is reported and a study of its thermal decomposition into metallic nanoparticles is studied.
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Soft- and Reactive-Landing of Cr(aniline)2 Sandwich Complexes onto Self-Assembled Monolayers: Separation between Functional and Binding Sites
TL;DR: The results show that the hyperthermal depositions onto a COOH-SAM bring about reactive-landing followed by covalent linking of an amide bond between the amine-containing Cr(aniline)(2) complexes to the carboxyl-terminated SAM surface, in which the binding sites can be separated from the functional sites of the d-π interaction.
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Effect of surface anisotropy on the hysteretic properties of a magnetic particle
Mihai Dimian,Hamid Kachkachi +1 more
TL;DR: In this article, the influence of surface anisotropy on the zero-temperature hysteretic properties of a single-domain magnetic particle was studied and an estimation of the anisotropic constant for which deviations from the Stoner-Wohlfarth model are observed.
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Three-Axis Vector Nano Superconducting Quantum Interference Device
M. J. Martínez-Pérez,D. Gella,B. Müller,Viacheslav Morosh,R. Wöbling,Javier Sesé,Oliver Kieler,Reinhold Kleiner,Dieter Koelle +8 more
TL;DR: The nanoSQUID as discussed by the authors is based on Nb/HfTi/Nb Josephson junctions and exhibits linewidths of 250$ nm and inner loop areas of $600 \times 90$ nm$^2$ and $500 \times 500$ nm/$2.