Anomalous codeposition of cobalt and ruthenium from chloride-sulfate baths

Marjaneh Jafari Fesharaki, Gholam Reza Nabiyouni, Júlia Dégi, L. Pogány, A. Révész, I. Bakonyi, L. Péter

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Codeposition of Ru and Co was studied at room temperature and at 50°C with various Ru 3+ and Co 2+ concentrations in the electrolyte. The codeposition of Co and Ru proved to be anomalous since no pure Ru could be obtained in the presence of Co 2+ in the electrolyte, but a significant Co incorporation into the deposit was detected at potentials where the deposition of pure Co was not possible. The composition of the deposits varied monotonously with the change of the concentration ratio of Co 2+ and Ru 3+. The deposition of Ru was much hindered, and the current efficiency was a few percent only when the molar fraction of Co in the deposit was low. Continuous deposits could be obtained only when the molar fraction of Co in the deposit was at least 40 at.%. The deposit morphology was related to the molar fraction of Co in the deposit. The X-ray diffractograms are in conformity with a hexagonal close-packed alloy and indicate the formation of nanocrystalline deposits. Two-pulse plating did not lead to a multilayer but to a Co-rich alloy. Magnetoresistance of the samples decreased with increasing Ru content.

Original languageEnglish
Pages (from-to)715-722
Number of pages8
JournalJournal of Solid State Electrochemistry
Volume16
Issue number2
DOIs
Publication statusPublished - Feb 2012

Fingerprint

Ruthenium
ruthenium
Sulfates
baths
sulfates
Cobalt
cobalt
Deposits
chlorides
deposits
Electrolytes
electrolytes
cobaltous chloride
ruthenium chloride
Magnetoresistance
plating
Plating
Multilayers
X rays
room temperature

Keywords

  • Alloy formation
  • Anomalous codeposition
  • Cobalt
  • Pulse plating
  • Ruthenium

ASJC Scopus subject areas

  • Electrochemistry
  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Materials Science(all)

Cite this

Anomalous codeposition of cobalt and ruthenium from chloride-sulfate baths. / Jafari Fesharaki, Marjaneh; Nabiyouni, Gholam Reza; Dégi, Júlia; Pogány, L.; Révész, A.; Bakonyi, I.; Péter, L.

In: Journal of Solid State Electrochemistry, Vol. 16, No. 2, 02.2012, p. 715-722.

Research output: Contribution to journalArticle

Jafari Fesharaki, Marjaneh ; Nabiyouni, Gholam Reza ; Dégi, Júlia ; Pogány, L. ; Révész, A. ; Bakonyi, I. ; Péter, L. / Anomalous codeposition of cobalt and ruthenium from chloride-sulfate baths. In: Journal of Solid State Electrochemistry. 2012 ; Vol. 16, No. 2. pp. 715-722.
@article{9157ea9f7b3e4036915a741531555f32,
title = "Anomalous codeposition of cobalt and ruthenium from chloride-sulfate baths",
abstract = "Codeposition of Ru and Co was studied at room temperature and at 50°C with various Ru 3+ and Co 2+ concentrations in the electrolyte. The codeposition of Co and Ru proved to be anomalous since no pure Ru could be obtained in the presence of Co 2+ in the electrolyte, but a significant Co incorporation into the deposit was detected at potentials where the deposition of pure Co was not possible. The composition of the deposits varied monotonously with the change of the concentration ratio of Co 2+ and Ru 3+. The deposition of Ru was much hindered, and the current efficiency was a few percent only when the molar fraction of Co in the deposit was low. Continuous deposits could be obtained only when the molar fraction of Co in the deposit was at least 40 at.{\%}. The deposit morphology was related to the molar fraction of Co in the deposit. The X-ray diffractograms are in conformity with a hexagonal close-packed alloy and indicate the formation of nanocrystalline deposits. Two-pulse plating did not lead to a multilayer but to a Co-rich alloy. Magnetoresistance of the samples decreased with increasing Ru content.",
keywords = "Alloy formation, Anomalous codeposition, Cobalt, Pulse plating, Ruthenium",
author = "{Jafari Fesharaki}, Marjaneh and Nabiyouni, {Gholam Reza} and J{\'u}lia D{\'e}gi and L. Pog{\'a}ny and A. R{\'e}v{\'e}sz and I. Bakonyi and L. P{\'e}ter",
year = "2012",
month = "2",
doi = "10.1007/s10008-011-1416-6",
language = "English",
volume = "16",
pages = "715--722",
journal = "Journal of Solid State Electrochemistry",
issn = "1432-8488",
publisher = "Springer Verlag",
number = "2",

}

TY - JOUR

T1 - Anomalous codeposition of cobalt and ruthenium from chloride-sulfate baths

AU - Jafari Fesharaki, Marjaneh

AU - Nabiyouni, Gholam Reza

AU - Dégi, Júlia

AU - Pogány, L.

AU - Révész, A.

AU - Bakonyi, I.

AU - Péter, L.

PY - 2012/2

Y1 - 2012/2

N2 - Codeposition of Ru and Co was studied at room temperature and at 50°C with various Ru 3+ and Co 2+ concentrations in the electrolyte. The codeposition of Co and Ru proved to be anomalous since no pure Ru could be obtained in the presence of Co 2+ in the electrolyte, but a significant Co incorporation into the deposit was detected at potentials where the deposition of pure Co was not possible. The composition of the deposits varied monotonously with the change of the concentration ratio of Co 2+ and Ru 3+. The deposition of Ru was much hindered, and the current efficiency was a few percent only when the molar fraction of Co in the deposit was low. Continuous deposits could be obtained only when the molar fraction of Co in the deposit was at least 40 at.%. The deposit morphology was related to the molar fraction of Co in the deposit. The X-ray diffractograms are in conformity with a hexagonal close-packed alloy and indicate the formation of nanocrystalline deposits. Two-pulse plating did not lead to a multilayer but to a Co-rich alloy. Magnetoresistance of the samples decreased with increasing Ru content.

AB - Codeposition of Ru and Co was studied at room temperature and at 50°C with various Ru 3+ and Co 2+ concentrations in the electrolyte. The codeposition of Co and Ru proved to be anomalous since no pure Ru could be obtained in the presence of Co 2+ in the electrolyte, but a significant Co incorporation into the deposit was detected at potentials where the deposition of pure Co was not possible. The composition of the deposits varied monotonously with the change of the concentration ratio of Co 2+ and Ru 3+. The deposition of Ru was much hindered, and the current efficiency was a few percent only when the molar fraction of Co in the deposit was low. Continuous deposits could be obtained only when the molar fraction of Co in the deposit was at least 40 at.%. The deposit morphology was related to the molar fraction of Co in the deposit. The X-ray diffractograms are in conformity with a hexagonal close-packed alloy and indicate the formation of nanocrystalline deposits. Two-pulse plating did not lead to a multilayer but to a Co-rich alloy. Magnetoresistance of the samples decreased with increasing Ru content.

KW - Alloy formation

KW - Anomalous codeposition

KW - Cobalt

KW - Pulse plating

KW - Ruthenium

UR - http://www.scopus.com/inward/record.url?scp=84858860490&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84858860490&partnerID=8YFLogxK

U2 - 10.1007/s10008-011-1416-6

DO - 10.1007/s10008-011-1416-6

M3 - Article

AN - SCOPUS:84858860490

VL - 16

SP - 715

EP - 722

JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

SN - 1432-8488

IS - 2

ER -