Recent progress in magnetic applications for micro- and nanorobots

• Ke Xu,
• Shuang Xu and
• Fanan Wei

Beilstein J. Nanotechnol. 2021, 12, 744–755, doi:10.3762/bjnano.12.58

• coupling strength increases. Because WPT is essentially the transmission of electric energy caused by magnetic coupling between coils, a magnetic material with high relative permeability yielded a larger coupling coefficient and, thus, a higher power transfer. In addition, by adjusting the angle of the

• induced current on the force of the magnetic material. Therefore, it was more convenient to use the resonant frequency [42]. It yielded the maximum power transmission efficiency and promoted the development of microrobots of a smaller size. Also, due to the addition of magnetic materials, the magnetic

Giant magnetoresistance ratio in a current-perpendicular-to-plane spin valve based on an inverse Heusler alloy Ti₂NiAl

• Yu Feng,
• Zhou Cui,
• Bo Wu,
• Jianwei Li,
• Hongkuan Yuan and
• Hong Chen

Beilstein J. Nanotechnol. 2019, 10, 1658–1665, doi:10.3762/bjnano.10.161

• –Yosida (RKKY) indirect exchange mechanism. According to the RKKY mechanism, the magnetic coupling among d-electron atoms is transferred through the conduction electrons, and the cooperative magnetic states would exhibit ferromagnetic or antiferromagnetic alignment of the moments largely dependent upon

Magnetic and luminescent coordination networks based on imidazolium salts and lanthanides for sensitive ratiometric thermometry

• Pierre Farger,
• Cédric Leuvrey,
• Mathieu Gallart,
• Pierre Gilliot,
• Guillaume Rogez,
• João Rocha,
• Duarte Ananias,
• Pierre Rabu and
• Emilie Delahaye

Beilstein J. Nanotechnol. 2018, 9, 2775–2787, doi:10.3762/bjnano.9.259

• , we evaluated the magnetic coupling, J, between neighboring Gd3+ ions by using the Fisher expression for classical spin chains [48][49]: In the above expression, N is the Avogadro number, g is the Landé factor, β is the Bohr magneton, k is the Boltzmann constant, S is the spin moment, J is the

• magnetic coupling constant and T is the temperature. The simultaneous fitting of the susceptibility and the χT product with the Fischer expression above lead to refined values of g = 2.00(1) and J = −0.026 cm−1. The g value was left free during fitting and is in line with the tabulated g values for Gd ions

Interplay between pairing and correlations in spin-polarized bound states

• Szczepan Głodzik,
• Aksel Kobiałka,
• Anna Gorczyca-Goraj,
• Andrzej Ptok,
• Grzegorz Górski,
• Maciej M. Maśka and
• Tadeusz Domański

Beilstein J. Nanotechnol. 2018, 9, 1370–1380, doi:10.3762/bjnano.9.129

• that spin–orbit coupling strongly affects the subgap states, both of the single impurities and their conglomerate arranged into a nanoscopic chain. For the case of single magnetic impurity the spin–orbit interaction (i) shifts the quantum phase transition towards higher magnetic coupling Jc, (ii

Beyond Moore’s technologies: operation principles of a superconductor alternative

• Igor I. Soloviev,
• Nikolay V. Klenov,
• Sergey V. Bakurskiy,
• Mikhail Yu. Kupriyanov,
• Alexander L. Gudkov and
• Anatoli S. Sidorenko

Beilstein J. Nanotechnol. 2017, 8, 2689–2710, doi:10.3762/bjnano.8.269

• design of an adiabatic circuit of arbitrary complexity. Recently, a 10000 gate-scale AQFP circuit was reported [70]. Magnetic coupling of AQFP gates is performed via transformers. The current flowing through the transformer wire must not be too small because it ought to provide appropriate bias flux to

Formation of ferromagnetic molecular thin films from blends by annealing

• Peter Robaschik,
• Ye Ma,
• Salahud Din and
• Sandrine Heutz

Beilstein J. Nanotechnol. 2017, 8, 1469–1475, doi:10.3762/bjnano.8.146

• their application in optoelectronic and spintronic devices [1][2]. One of the key physical properties determining the performance is crystallinity, which significantly influences electron/hole mobility and magnetic coupling [3][4]. We recently reported on an approach to achieve crystalline porphyrazine

Deposition of exchange-coupled dinickel complexes on gold substrates utilizing ambidentate mercapto-carboxylato ligands

• Martin Börner,
• Laura Blömer,
• Marcus Kischel,
• Peter Richter,
• Georgeta Salvan,
• Dietrich R. T. Zahn,
• Pablo F. Siles,
• Maria E. N. Fuentes,
• Carlos C. B. Bufon,
• Daniel Grimm,
• Oliver G. Schmidt,
• Daniel Breite,
• Bernd Abel and
• Berthold Kersting

Beilstein J. Nanotechnol. 2017, 8, 1375–1387, doi:10.3762/bjnano.8.139

• value for the magnetic coupling in 7 and 8. The experimental J-values agree also reasonably well with those obtained by broken symmetry density functional calculations for exchange interactions (J = +26 cm−1 for 7; J = +27 cm−1 for 8). In order to evaluate the coupling through the thiophenolato and

Nanoantenna-assisted plasmonic enhancement of IR absorption of vibrational modes of organic molecules

• Alexander G. Milekhin,
• Olga Cherkasova,
• Sergei A. Kuznetsov,
• Ilya A. Milekhin,
• Ekatherina E. Rodyakina,
• Alexander V. Latyshev,
• Sreetama Banerjee,
• Georgeta Salvan and
• Dietrich R. T. Zahn

Beilstein J. Nanotechnol. 2017, 8, 975–981, doi:10.3762/bjnano.8.99

• molecules, often investigated as promising candidates for molecular spintronics [5][6]. There have been studies on molecule/metal interfaces [7], magnetic coupling in the metal phthalocyanine layers [8], spin transport or magnetic properties through single molecules or even thin layers [6][9][10] of

Computing the T-matrix of a scattering object with multiple plane wave illuminations

• Martin Fruhnert,
• Ivan Fernandez-Corbaton,
• Vassilios Yannopapas and
• Carsten Rockstuhl

Beilstein J. Nanotechnol. 2017, 8, 614–626, doi:10.3762/bjnano.8.66

• incidence modes to electric scattered modes, Tmm describes the magnetic coupling and the other parts correspond to mixing of electric and magnetic modes. These parts of the T-matrix can be ordered to show the coupling between the multipolar modes Then Tnn' is the part that represents the coupling of order n

Microwave solvothermal synthesis and characterization of manganese-doped ZnO nanoparticles

• Jacek Wojnarowicz,
• Roman Mukhovskyi,
• Elzbieta Pietrzykowska,
• Sylwia Kusnieruk,
• Jan Mizeracki and
• Witold Lojkowski

Beilstein J. Nanotechnol. 2016, 7, 721–732, doi:10.3762/bjnano.7.64

• various oxidation states (II–IV), and dopant clusters. The formation of clusters of Mn2+ dopant in ZnO NPs, e.g., on the particle surface, may lead to a various kind of magnetic coupling of atoms with their adjacent atoms [46]. This, in turn, leads to different magnetic properties than those encountered

Magnetic reversal dynamics of a quantum system on a picosecond timescale

• Nikolay V. Klenov,
• Alexey V. Kuznetsov,
• Igor I. Soloviev,
• Sergey V. Bakurskiy and
• Olga V. Tikhonova

Beilstein J. Nanotechnol. 2015, 6, 1946–1956, doi:10.3762/bjnano.6.199

• pulse with an amplitude of about 1 Oe for the solution of the magnetization reversal problem on the picosecond timescale. Note that in this case the characteristic decoherence time is up to 10 μs [48]. It is possible to implement such an impact in the experiment due to the magnetic coupling of the

Quasi-1D physics in metal-organic frameworks: MIL-47(V) from first principles

• Danny E. P. Vanpoucke,
• Jan W. Jaeken,
• Stijn De Baerdemacker,
• Kurt Lejaeghere and
• Veronique Van Speybroeck

Beilstein J. Nanotechnol. 2014, 5, 1738–1748, doi:10.3762/bjnano.5.184

• “Stability and magnetic coupling” and Table 3). Table 2 shows that the VO6 octahedra are asymmetrically distorted. The double bond at one apex ( = 1.65 Å) lies in the center of the range of lengths of normal V=O bonds (1.55–1.75 Å), while the V···O trans bond () is at the lower end of the length range of

• this regard. Stability and magnetic coupling The spin configuration plays an important role in the stability of the system as is shown in Table 1. As is expected from magnetic measurements on MIL-47(V) [1] and magnetic susceptibility measurements on vanadyl acetate chains [78], an antiferromagnetic

• (V) MOF. Pink, red, black, and white spheres indicate V, O, C and H positions, respectively. The grey box indicates the unit cell used. The intra- and inter-chain couplings Jc and Ji (cf. section “Stability and magnetic coupling”) are indicated. (b) Representation of the Brillouin zone of the unit

Nanoglasses: a new kind of noncrystalline materials

• Herbert Gleiter

Beilstein J. Nanotechnol. 2013, 4, 517–533, doi:10.3762/bjnano.4.61

• the behavior of the interfacial component of the nanoglass with the same chemical composition. In the case of the nanoglass, the slope of the Bhf versus T plot is found to be about 2 (Figure 13). This slope indicates [21][22][23][24] a dominant contribution of the itinerant electrons to the magnetic

• coupling in the nanoglass interfaces. The same conclusion is suggested by the magnetic Compton profile of the chemically identical nanoglass [21] indicating that the itinerant ferromagnetism of the Fe90Sc10 nanoglass is based on spin-polarized sp-like itinerant electrons [21][22][23][24]. If the Young’s

Antiferromagnetic coupling of TbPc₂ molecules to ultrathin Ni and Co films

• David Klar,
• Svetlana Klyatskaya,
• Andrea Candini,
• Bernhard Krumme,
• Kurt Kummer,
• Philippe Ohresser,
• Valdis Corradini,
• Valentina de Renzi,
• Roberto Biagi,
• Loic Joly,
• Jean-Paul Kappler,
• Umberto del Pennino,
• Marco Affronte,
• Heiko Wende and
• Mario Ruben

Beilstein J. Nanotechnol. 2013, 4, 320–324, doi:10.3762/bjnano.4.36

• , CNRS UMP 7504, 23 Rue du Loess, 67034 Strasbourg Cedex 2, France 10.3762/bjnano.4.36 Abstract The magnetic and electronic properties of single-molecule magnets are studied by X-ray absorption spectroscopy and X-ray magnetic circular dichroism. We study the magnetic coupling of ultrathin Co and Ni

• . On both substrates the TbPc2 molecules couple antiferromagnetically to the ferromagnetic films, which is possibly due to a superexchange interaction via the phthalocyanine ligand that contacts the magnetic surface. Keywords: magnetic anisotropy; magnetic coupling; single molecule magnets; X-ray

• coverage of TbPc2 molecules on ultrathin Co and Ni films, focusing on the magnetic coupling between the substrate and the molecules. Results and Discussion X-ray absorption spectroscopy of TbPc2 molecules Figure 2 shows spectra of circularly polarized (top) and linearly polarized X-rays (bottom) and the

Hydrogen-plasma-induced magnetocrystalline anisotropy ordering in self-assembled magnetic nanoparticle monolayers

• Alexander Weddemann,
• Judith Meyer,
• Anna Regtmeier,
• Irina Janzen,
• Dieter Akemeier and
• Andreas Hütten

Beilstein J. Nanotechnol. 2013, 4, 164–172, doi:10.3762/bjnano.4.16

• symmetry [7][8][9] or various superstructures such as lines or rings [10][11]. In these systems, the magnetic coupling between individual particles increases the geometrical order of the assembly, which makes such patterns promising candidates for the design of novel data-storage devices [12]. A basic

• ensembles of interacting magnetic nanocrystals, not only the magnetocrystalline contribution, but also the magnetic coupling determines the stability of a given magnetic state. In particular, the most stable magnetic configuration is achieved whenever the magnetocrystalline axes of individual particle

Strong spin-filtering and spin-valve effects in a molecular V–C₆₀–V contact

• Mohammad Koleini and
• Mads Brandbyge

Beilstein J. Nanotechnol. 2012, 3, 589–596, doi:10.3762/bjnano.3.69

• transport properties of a C60-molecular junction in a setup relevant for STM experiments. Our results demonstrate how the FM and AFM configurations can be identified due to their markedly different conductance and shot noise. Thus, it may allow for the study of the magnetic coupling between tip and

Nanoscaled alloy formation from self-assembled elemental Co nanoparticles on top of Pt films

• Luyang Han,
• Ulf Wiedwald,
• Johannes Biskupek,
• Kai Fauth,
• Ute Kaiser and
• Paul Ziemann

Beilstein J. Nanotechnol. 2011, 2, 473–485, doi:10.3762/bjnano.2.51

• boundaries facing a Pt-rich environment. Moreover, magnetic coupling of NPs can be excluded as shown by Henkel plots. On the Pt(100) epitaxial films a completely different behavior has been observed up to intermediate annealing temperature TA = 380 °C. In this regime, both µL/µSeff and the coercive field

Magnetic coupling mechanisms in particle/thin film composite systems

• Giovanni A. Badini Confalonieri,
• Philipp Szary,
• Durgamadhab Mishra,
• Maria J. Benitez,
• Mathias Feyen,
• An Hui Lu,
• Leonardo Agudo,
• Gunther Eggeler,
• Oleg Petracic and
• Hartmut Zabel

Beilstein J. Nanotechnol. 2010, 1, 101–107, doi:10.3762/bjnano.1.12

• reproducible over multiple scans. Accounting for the better contact between particles and thin film and thus stronger magnetic coupling, this phenomenon can be due to the particles collecting the magnetic flux in a mechanism similar to that exerted by soft magnetic underlayers in perpendicular recording media