Magnetic field effects in electrochemical reactions

Bund, Andreas; Koehler, S.; Kuehnlein, Holger H.; Plieth, W.

doi:10.1016/j.electacta.2003.04.009

Cited by 148 publications

(94 citation statements)

References 26 publications

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“…The cathode surface pH variation closely related to the hydroxide and the oxide formation determines the crystal growth mechanism. [19][20][21] That is, "Macro-MHD" convection changes the concentration profiles of H ϩ and Fe 2ϩ in the concentration boundary layer. Moreover, the hydroxides formation might induce an anisotropic texture evolution as shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

Phenomenological Discussion of Fe and Co Film Electrodeposited in a Magnetic Field

et al. 2005

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Section: Discussionmentioning

confidence: 99%

Phenomenological Discussion of Fe and Co Film Electrodeposited in a Magnetic Field

et al. 2005

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“…(16) In electrochemical processing, the advantage of the magnetic field is improving mass transport, accelerating oxidation reaction at electrode, and assisting the rate of passivation on the surface. (17) The main effect of the applied magnetic field on the electrochemical reaction is the additional magnetic convection in the electrolyte, called the magnetohydrodynamic (MHD) effect. This convection results from the Lorentz Force generated by the interaction of the magnetic field perpendicular to the current line.…”

Section: Introductionmentioning

confidence: 99%

“…(19,20) Bund et al also reported this magnetic convection because of the gradient of magnetic susceptibility in the solution, especially between the bulk and Nernst layer in copper electrodeposition. (17) In this experiment, during the porous growth, the micro MHD affects the ionic migration, O 2− , OH − , Al 3+ , during oxide dissolution for pore growth in a circular manner along the pore channel. The convection arises at the vicinity between the alumina and electrolyte interface.…”

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confidence: 99%

The Effect of Applied Vertical Magnetic Field on Anodizing Behavior of Aluminum to Produce Porous Anodic Aluminum Oxide

2016

Sensors and Materials

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Porous anodic aluminum oxide (AAO) film has potential to be a candidate material in nanofabrication, membranes, and humidity sensors. Anodic oxidation is typically preferred to fabricate AAO because it is an inexpensive and controllable process. In this study, a different approach to fabricating AAO by a single step anodizing in oxalic acid assisted by externally applied vertical magnetic field, is adopted. The anodizing experiments were conducted in 0.3 M oxalic acid aqueous solution as electrolyte. The vertical magnetic field was generated by a superconducting magnet with the range of 1 to 5 T. The results of the experiment showed that the magnetic field can promote the anodic dissolution of Al 3+ ions, and hence increase the AAO thickness by twice as much as without one. However, the pore diameter was decreased by the increased magnitude of the magnetic field. Interestingly, the AAO formed by anodizing with the vertical magnetic field showed a vertically aligned cylindrical structure of the pores. On the other hand, AAO formed by anodizing without the magnetic field showed random growth of pore structure. The density of AAO pores was also increased by the increase in magnitude of the magnetic field. The deep and straight structure with high density and porosity of AAO is advantageous for further application as template and sensor materials.

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“…12) In this paper, we investigated the effects of varying the external applied magnetic field (H A = 00.21 T) on the magnetic properties of Co-Ni-P nanorods with the diameter of 200 nm and the length of 3 µm, which were electrodeposited into polycarbonate templates. We found that the magnetic properties of Co-Ni-P nanorods were improved when the external magnetic field was applied during the deposition.…”

mentioning

confidence: 99%

Magnetic Behaviors of Arrays of Co-Ni-P Nanorod: Effects of Applied Magnetic Field

Thiem¹,

Pham²,

Dũng

et al. 2015

Mater. Trans.

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The Co-Ni-P nanorods were fabricated by electrodeposition method by using the porous polycarbonate template. The investigation by mean of X-ray diffraction and high-resolution transmission electron microscopy indicated that samples were nanocrystalline clusters embedded in the amorphous base. The samples exhibited a room temperature ferromagnetism with the high magnetic anisotropy along the rod. The applied magnetic fields during the fabrication of the Co-Ni-P nanorods was strongly influenced by the magnetic properties. The M R /M S ratio and coercivity rapidly increased when the magnetic applied field changed from 0 to 0.21 T.

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Magnetic field effects in electrochemical reactions

Cited by 148 publications

References 26 publications

Phenomenological Discussion of Fe and Co Film Electrodeposited in a Magnetic Field

Phenomenological Discussion of Fe and Co Film Electrodeposited in a Magnetic Field

The Effect of Applied Vertical Magnetic Field on Anodizing Behavior of Aluminum to Produce Porous Anodic Aluminum Oxide

Magnetic Behaviors of Arrays of Co-Ni-P Nanorod: Effects of Applied Magnetic Field

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