The effect of magnetic fields on the electroless deposition of Co–W–P film

Yu, Yundan; Wei, Guoying; Hu, Xiukun; Ge, Hongliang; Yu, Zhou

doi:10.1016/j.surfcoat.2010.02.020

Cited by 26 publications

(8 citation statements)

References 10 publications

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“…Актуальність дослідження діелектричних та спектральних харак-теристик гетеросистем з металевими включеннями розміром по-рядку 5-15 нм обумовлено низкою властивостей цих систем та ак-тивним їх використанням у сучасних технологіях для задач діелек-тричної і оптичної спектроскопії поверхні, оптичного запису інфо-рмації тощо [1][2][3][4]. Варто відмітити виявлення аномально великої швидкості коаґуляції крапель срібла, розмір яких становить приб-лизно 14 нм [2].…”

Section: вступunclassified

Influence of the Adsorptive Layer of Metal Particles on Their Polarizability and Light Scattering

Gryshchuk¹,

Stetsenko²

2016

Metallofiz. Noveishie Tekhnol.

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* Національний університет біотехнологічних ресурсів і природокористування України, вул. Героїв оборони, 15, 03141 Київ, Україна Розглядається сучасний стан досліджень взаємодії електромагнітного ви-промінення з металевими наночастинками та дисперсними системами на їх основі. Проаналізовано деякі чисельні результати з даної тематики, одержані за останні роки. Наведено результати досліджень впливу адсор-бційного шару металевої частинки сферичної форми на її поляризовність та посилення комбінаційного розсіяння світла молекулами у зовнішньо-му електричному полі.Рассматривается современное состояние исследований взаимодействия электромагнитного излучения с металлическими наночастицами и дис-персными системами на их основе. Проанализированы некоторые чис-ленные результаты по данной тематике, полученные в последние годы. Приведены результаты исследований влияния адсорбционного слоя ме-таллической частицы сферической формы на её поляризуемость и усиле-ние комбинационного рассеяния света молекулами во внешнем электри-ческом поле.Current state of studies of interaction of the electromagnetic radiation with metal nanoparticles and dispersed systems based on them is considered. Some numerical data on this subject obtained in recent years are analysed. Results of investigation of influence of the adsorptive layer of a spherical metal particle on its polarizability and amplification of Raman scattering in external electric field are presented.Ключові слова: малі частинки, адсорбційний шар, поляризовність, ком-бінаційне розсіяння, коефіцієнт посилення.

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Section: вступunclassified

Influence of the Adsorptive Layer of Metal Particles on Their Polarizability and Light Scattering

Gryshchuk¹,

Stetsenko²

2016

Metallofiz. Noveishie Tekhnol.

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“…Electrodeposition is an effective method to produce cobalt-based alloys, but thin films obtained by this way contain some defects, such as rough surface. An application of parallel-toelectrode-surface magnetic field during the process can positively affect the deposits by smoothing their surfaces as well as improving magnetic properties [31][32][33]. This is caused by magnetohydrodynamic (MHD) and magnetocrystalline anisotropy effects.…”

Section: The Magnetic Properties Dependence On the Coupled Effects Ofmentioning

confidence: 99%

The Coupled Magnetic Field Effects on the Microstructure Evolution and Magnetic Properties of As-Deposited and Post- Annealed Nano-Scaled Co-Based Films — Part I

Li¹,

Wang²,

Frańczak³

et al. 2015

Electroplating of Nanostructures

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Superimposed external magnetic fields during electrodeposition process offers the possibility to tailor microstructure and properties of the obtained films in a very efficient, contactless, and easily controllable way, what is caused by so-called magnetohydrodynamic MHD effect. On the other hand, the nonequilibrium state of aselectrodeposited nanocrystalline films provides a strong thermodynamic potential for microstructural transformation. This means that the benefit effect of magneto-electrodeposition on a nanocrystalline film can be completely consumed by a thermal exposure at relatively low temperature. Magnetic field annealing has been confirmed to be useful for tailoring the microstructure of as-deposited nanocrystalline films for their widespread uses.The particular interest of this book Chapter Growth of Co-based magnetic thin films by magnetic fields MF assisted electrodeposition and heat treatment is the finding that the microstructure and magnetic properties of nanocrystalline Co-based alloys and oxides like CoX X= Cu, Ni, NiP, FeO are improved by imposition of MF during elaboration process or post-annealing process. "ccording to the previous study, the targeted scientific activities pay more attention to develop alloys and oxides in nanoscale using pulsed electrodeposition assisted by high magnetic field HMF . Note Since the instantaneous current density during pulse electrodeposition is higher than that during direct current plating, the microstructure of the nano-scale electrodeposits can be more easily controlled by perturbing the desorption/adsorption processes occurring in the pulse electrodeposition process .During the experiment, high magnetic field is an in-situ method for the control of electrodeposition process. The obtained material is then annealed or oxidized after

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“…Therefore, cobalt thin films have been considered as a kind of significant and promising material, which could be used in electronics industry, electromechanical systems, magnetic storage devices and military avionics. [1][2][3][4][5][6] Electrodeposition is an effective and efficient way to obtain cobalt thin films. However, it is not easy to control particle size and morphology roughness of samples during electrodeposition process.…”

Section: Introductionmentioning

confidence: 99%

Influence of magnetic fields on cobalt electrodeposition

Zhang

et al. 2014

Surface Engineering

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Magnetic fields parallel to electrodes were introduced during plating process to prepare cobalt films from baths without additives. Effects of magnetic intensities on the nucleation process, electrochemical mechanism and surface morphology were investigated. It was found that limiting current and deposition mass increased gradually with the rise in magnetic intensities. Magnetohydrodynamic phenomenon (magnetic fields can induce currents in a moving conductive fluid, which in turn creates forces on the fluid and also changes the magnetic field itself) caused by Lorentz forces could agitate to decrease thickness of diffusion layers, which contribute to the increase in deposition rate. Reduction of cobalt on copper substrates without magnetic fields showed instantaneous nucleation process. However, cobalt reduction with 1 T magnetic intensity deviated from instantaneous nucleation process as a result of micromagnetohydrodynamic (micro-MHD) flows. Films of smaller grain size and compact surface could be obtained under 1 T magnetic intensity as a result of MHD effects.

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The effect of magnetic fields on the electroless deposition of Co–W–P film

Cited by 26 publications

References 10 publications

Influence of the Adsorptive Layer of Metal Particles on Their Polarizability and Light Scattering

Influence of the Adsorptive Layer of Metal Particles on Their Polarizability and Light Scattering

The Coupled Magnetic Field Effects on the Microstructure Evolution and Magnetic Properties of As-Deposited and Post- Annealed Nano-Scaled Co-Based Films — Part I

Influence of magnetic fields on cobalt electrodeposition

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