Switching of exchange coupled grains

Thermally activated switching at long time scales in exchange-coupled magnetic grains.

Ahmad M. Almudallal, J. I. Mercer, J. P. Whitehead, M. L. Plumer, J. van Ek, and T. J. Fal

Phys. Rev. B 92, 134418 (2015)

The contour plot of the minimum energy surface for the weak coupling case I=0.5×10−3J/m2 for (a) H=0 and (b) H=4kOe. The black lines indicate the boundary separating each pair of basins of attraction {Ωα,Ωβ} and is denoted by Γαβ. The red lines indicate the MEP connecting the four minima. The lines cross at the saddle points sαβ.

2D Nanomaterials: Review

Ultrathin Two-Dimensional Nanomaterials.
Hua Zhang
ACS Nano 9, 9451 (2015)

 

Review: Magnetic nanoparticles: applications in biomedicine

Magnetic nanoparticles: material engineering and emerging applications in lithography and biomedicine.
Yuping Bao, Tianlong Wen, Anna Cristina S. Samia, Amit Khandhar, Kannan M. Krishnan
Journal of Materials Science 51, 513 (2016) 

Spin configurations in a single Fe cube

Size-Specific Spin Configurations in Single Iron Nanomagnet: From Flower to Exotic Vortices.

Christophe Gatel, Francisco Javier Bonilla, Anca Meffre, Etienne Snoeck, Bénédicte Warot-Fonrose, Bruno Chaudret, Lise-Marie Lacroix, and Thomas Blon

Nano Letters 15, 6952 (2015)

From shape to surface effects in magnetic anisotropy of Co NPs

Size effects in the magnetic anisotropy of embedded cobalt nanoparticles: from shape to surface.
Simón Oyarzún, Alexandre Tamion, Florent Tournus, Véronique Dupuis, Matthias Hillenkamp

Scientific Reports 5, 14749 (2015)

Comparison of the experimental values for with the magnetic surface anisotropy calculated using the Néel model for different example cluster sizes and single facets added along the [100] (blue, lower curve) and [111] (green, upper curve) directions.

Iron Oxide NPs for Multimodal Imaging and Magnetoresponsive Therapy

Iron Oxide Based Nanoparticles for Multimodal Imaging and Magnetoresponsive Therapy.
Nohyun Lee, Dongwon Yoo, Daishun Ling, Mi Hyeon Cho, Taeghwan Hyeon, and Jinwoo Cheon 
Chem. Rev. 115, 10637 (2015)
 

Néel skyrmions in confined geometries

Degeneracies and fluctuations of Néel skyrmions in confined geometries.
Rick Keesman, A. O. Leonov, P. van Dieten, Stefan Buhrandt, G. T. Barkema, Lars Fritz, and R. A. Duine 
Phys. Rev. B 92, 134405 (2015)

Simulations snapshots of spin systems of size L×L=3 for different parameter values and temperatures with the parameter D/Jchosen such that the pitch length p=8. The periodic boundary is drawn as a red solid line and spin vectors are represented by colored arrows where the color scales linearly with the zˆ component of the vector to highlight spin texture

Exchange bias in molecular layers

Exchange bias and room-temperature magnetic order in molecular layers.

Manuel Gruber, Fatima Ibrahim, Samy Boukari, Hironari Isshiki, Loïc Joly, Moritz Peter, Michał Studniarek, Victor Da Costa, Hashim Jabbar, Vincent Davesne, Ufuk Halisdemir, Jinjie Chen, Jacek Arabski, Edwige Otero, Fadi Choueikani, Kai Chen, Philippe Ohresser, Wulf Wulfhekel, Fabrice Scheurer, Wolfgang Weber, Mebarek Alouani, Eric Beaurepaire & Martin Bowen

Nature Materials 14, 981 (2015)

Adsorption geometry and magnetic properties of the MnPc stacking on Co deduced from DFT calculations.

 

Nano Kirkendall Effect

Nano Kirkendall Effect Related to Nanocrystallinity of Metal Nanocrystals: Influence of the Outward.and Inward Atomic Diffusion on the Final Nanoparticle Structure.
Zhijie Yang, Nailiang Yang, and Marie-Paule Pileni
The Journal of Physical Chemistry C 119, 22249 (2015)

Domain wall formation in dipolar NP assemblies

Longitudinal domain wall formation in elongated assemblies of ferromagnetic nanoparticles.
Miriam Varón, Marco Beleggia, Jelena Jordanovic, Jakob Schiøtz, Takeshi Kasama, Victor F. Puntes & Cathrine Frandsen
Scientific Reports 5, 14536 (2015)

Simulation of the relaxed F-state (a–c) and the relaxed L-state (d–f) with increasing reverse fields of (a,d) 0 mT, (b,e) 35 mT, and (c,f) 50 mT. The colors denote the orientation of the magnetic moment (cf. the color wheel in Fig. 3). Panels on the right hand side indicate the net moment in the length direction over the widths of the assemblies.