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Title: The evolution of composition and morphology during the initial growth of electrodeposited Ni-Fe films: Comparison between the potentiostatic mode and the pulse-reverse potential mode

Journal Article · · Electrochimica Acta
 [1];  [2]
  1. Univ. of Virginia, Charlottesville, VA (United States); OSTI
  2. Univ. of Virginia, Charlottesville, VA (United States)

The anomalous codeposition of Ni-Fe tends to develop a composition gradient zone along the growth direction within the near-substrate region. Although it has been shown that such a composition gradient can be mitigated by the pulsed deposition method, a fundamental understanding of this behavior based on the anomalous codeposition mechanism has not been achieved yet. In this work, the evolution of the composition and the morphology during the (pulsed) electrodeposition of Ni-Fe films was reported. Further, a theory based on the Fe deposition mechanism originally described by Bockris, Drazic, and Despic was proposed and described in detail, which was used to rationalize not only the occurrence and the decline of the composition gradient, but also the opposite signs of the composition gradient observed under the potentiostatic mode and the pulse-reverse potential mode.

Research Organization:
Univ. of Virginia, Charlottesville, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019191
OSTI ID:
1977074
Journal Information:
Electrochimica Acta, Journal Name: Electrochimica Acta Journal Issue: C Vol. 409; ISSN 0013-4686
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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