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Magnetochemistry, Volume 8, Issue 7

2022 July - 9 articles

Cover Story: Micro- and nano-structured metal layers are attractive for numerous applications including microelectronics, microcopies and electrocatalysis. Using pulse-reverse electroplating on a planar but magnetically patterned electrode, tall copper structures of about 2 μm height are obtained. A new numerical approach is presented which allows better agreement with the experimental results. A detailed discussion of the magnetic forces and the buoyancy force involved allows us to clarify the growth mechanism of the micro-structures during the alternating pulses and to give an explanation of why the maximum height of the structures is limited to a few microns. View this paper
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Articles (9)

  • Article
  • Open Access
2,372 Views
11 Pages

ESR Investigations of the Submicron LiFe1−xMnxPO4 Systems

  • Tatiana Gavrilova,
  • Adilya Yagfarova,
  • Sergey Khantimerov,
  • Dinar Abdullin,
  • Nina Kosova and
  • Nail Suleimanov

Magnetic properties of the submicron carbon-coated LiFe1−xMnxPO4 (x = 0, 0.01, 0.1) systems were investigated using the electron spin resonance (ESR) method. The observed ESR signal consisted of two broad resonance lines with a Lorentzian line...

(This article belongs to the Section Magnetic Materials)
  • Article
  • Open Access
21 Citations
6,100 Views
13 Pages

Terbium (III) Oxide (Tb2O3) Transparent Ceramics by Two-Step Sintering from Precipitated Powder

  • Dianjun Hu,
  • Xiaoying Li,
  • Lixuan Zhang,
  • Ilya Snetkov,
  • Penghui Chen,
  • Zhengfa Dai,
  • Stanislav Balabanov,
  • Oleg Palashov and
  • Jiang Li

As a result of preliminary air calcination and subsequent reduction in a flowing NH3 atmosphere of the precursor from the liquid precipitation method for the first time, pure-phase Tb2O3 powder with an average particle size of 135 nm was prepared. Th...

(This article belongs to the Special Issue New Trends in Magneto-Optical Ceramics)
  • Article
  • Open Access
8 Citations
3,549 Views
16 Pages

Magnetic and Luminescence Properties of 8-Coordinated Pyridyl Adducts of Samarium(III) Complexes Containing 4,4,4-Trifluoro-1-(naphthalen-2-yl)-1,3-butanedionate

  • Franz A. Mautner,
  • Florian Bierbaumer,
  • Ramon Vicente,
  • Saskia Speed,
  • Ánnia Tubau,
  • Roland C. Fischer and
  • Salah S. Massoud

A novel series of polypyridyl adducts, [Sm(ntfa)3(NN)] (2–4), with ntfa = 4,4,4-trifluoro-1-(naphthalen-2-yl)-1,3-butanedionate, NN = 2,2′-bipyridine (bipy), 4,4′-dimethyl-2,2′-bipyridine (4,4′-Me2bipy), and 5,5′-d...

(This article belongs to the Special Issue Characterization of Coordination Compounds)
  • Feature Paper
  • Article
  • Open Access
5 Citations
3,713 Views
66 Pages

Theory of Chiral Electrodeposition by Chiral Micro-Nano-Vortices under a Vertical Magnetic Field -1: 2D Nucleation by Micro-Vortices

  • Ryoichi Morimoto,
  • Miki Miura,
  • Atsushi Sugiyama,
  • Makoto Miura,
  • Yoshinobu Oshikiri,
  • Iwao Mogi,
  • Yusuke Yamauchi,
  • Satoshi Takagi and
  • Ryoichi Aogaki

Remarkable chiral activity is donated to a copper deposit surface by magneto-electrodeposition, whose exact mechanism has been clarified by the three-generation model. In copper deposition under a vertical magnetic field, a macroscopic tornado-like r...

(This article belongs to the Special Issue Magnetohydrodynamic Effect in Electrochemical Processes: Magnetoelectrodeposition, Magnetoelectrocatalysis, and Related Studies)
  • Article
  • Open Access
4 Citations
3,050 Views
10 Pages

Influence of a Constant Magnetic Field on the Mechanism of Adrenaline Oxidation

  • Vyacheslav N. Kazin,
  • Evgenii A. Guzov,
  • Valentina A. Moshareva and
  • Evgenii M. Pliss

In order to establish the role of the magnetic effect in the key stages of the autoxidation and initiated oxidation radical-chain reactions, the experimental data and kinetic analysis of the influence of a magnetic field on the oxidative transformati...

(This article belongs to the Section Applications of Magnetism and Magnetic Materials)
  • Feature Paper
  • Article
  • Open Access
2 Citations
3,343 Views
20 Pages

Corrosion Behavior of ZnMn Coatings Magnetoelectrodeposited

  • Lamia Allam,
  • Florica S. Lazar and
  • Jean-Paul Chopart

The zinc–manganese alloy coatings have been obtained without and with superimposition of a 0.3 T magnetic field in a parallel direction to the working surface electrode. The electrodeposition during 30 min, for two applied potentials (E = &minu...

(This article belongs to the Special Issue Magnetohydrodynamic Effect in Electrochemical Processes: Magnetoelectrodeposition, Magnetoelectrocatalysis, and Related Studies)
  • Article
  • Open Access
2 Citations
3,050 Views
8 Pages

M-type Sr0.1Ca0.4La0.5Fe12O19 powder specimens doped with different precursors RFe2O4(R = Co, Ni, Cu, Zn, and Mg) were prepared via a traditional solid-state reaction method. The structural and magnetic properties of the specimens were studied. Only...

(This article belongs to the Special Issue Hexagonal Ferrites: Synthesis, Structure and Properties)
  • Review
  • Open Access
4 Citations
2,696 Views
14 Pages

Breaking of Odd Chirality in Magnetoelectrodeposition

  • Iwao Mogi,
  • Ryoichi Morimoto,
  • Ryoichi Aogaki and
  • Kohki Takahashi

Electrodeposition under magnetic fields (magnetoelectrodeposition; MED) can induce surface chirality on copper films. The chiral signs of MED films should depend on the magnetic field polarity; namely, the reversal of the magnetic field causes the op...

(This article belongs to the Special Issue Magnetohydrodynamic Effect in Electrochemical Processes: Magnetoelectrodeposition, Magnetoelectrocatalysis, and Related Studies)
  • Article
  • Open Access
9 Citations
3,352 Views
12 Pages

Pulse Reverse Plating of Copper Micro-Structures in Magnetic Gradient Fields

  • Mengyuan Huang,
  • Margitta Uhlemann,
  • Kerstin Eckert and
  • Gerd Mutschke

Micro-structured copper layers are obtained from pulse-reverse electrodeposition on a planar gold electrode that is magnetically patterned by magnetized iron wires underneath. 3D numerical simulations of the electrodeposition based on an adapted reac...

(This article belongs to the Special Issue Magnetohydrodynamic Effect in Electrochemical Processes: Magnetoelectrodeposition, Magnetoelectrocatalysis, and Related Studies)
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Magnetochemistry - ISSN 2312-7481