Single step electrosynthesis of NiMnGa alloys

Berna Özkale; Fajer Mushtaq; Jordina Fornell; George Chatzipirpiridis; Lukas H.J. Martin; Jordi Sort; Carlos M. Müller; Eva Pellicer; Bradley J. Nelson; Salvador Pané

doi:10.1016/j.electacta.2016.04.071

Single step electrosynthesis of NiMnGa alloys

Berna Özkale, Fajer Mushtaq, Jordina Fornell, George Chatzipirpiridis, Lukas H.J. Martin, Jordi Sort, Carlos M. Müller, Eva Pellicer, Bradley J. Nelson, Salvador Pané

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

An electrochemical synthesis route for NiMnGa alloys is presented. Thin films of NiMnGa were fabricated by single step electrodeposition from aqueous electrolytes using direct current over a range of current densities. By electrolyte tuning, homogeneous films with high Ga and Mn content could be achieved at current densities as high as -400 mA cm^-2. Detailed compositional analysis of the alloys showed that growth was homogeneous and oxygen content was minimized. Films plated at very low current densities were found to be nanocrystalline/amorphous. In order to obtain fully crystalline samples, thermal annealing was carried out. Mechanical characterization was assessed by nanoindentation, and the effect of Ga content on mechanical properties was investigated.

Original language	English
Pages (from-to)	199-205
Number of pages	7
Journal	Electrochimica Acta
Volume	204
DOIs	https://doi.org/10.1016/j.electacta.2016.04.071
State	Published - 20 Jun 2016
Externally published	Yes

Keywords

NiMnGa
aqueous electrolyte
single step electrodeposition
thin films

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10.1016/j.electacta.2016.04.071

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title = "Single step electrosynthesis of NiMnGa alloys",

abstract = "An electrochemical synthesis route for NiMnGa alloys is presented. Thin films of NiMnGa were fabricated by single step electrodeposition from aqueous electrolytes using direct current over a range of current densities. By electrolyte tuning, homogeneous films with high Ga and Mn content could be achieved at current densities as high as -400 mA cm-2. Detailed compositional analysis of the alloys showed that growth was homogeneous and oxygen content was minimized. Films plated at very low current densities were found to be nanocrystalline/amorphous. In order to obtain fully crystalline samples, thermal annealing was carried out. Mechanical characterization was assessed by nanoindentation, and the effect of Ga content on mechanical properties was investigated.",

keywords = "NiMnGa, aqueous electrolyte, single step electrodeposition, thin films",

author = "Berna {\"O}zkale and Fajer Mushtaq and Jordina Fornell and George Chatzipirpiridis and Martin, {Lukas H.J.} and Jordi Sort and M{\"u}ller, {Carlos M.} and Eva Pellicer and Nelson, {Bradley J.} and Salvador Pan{\'e}",

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doi = "10.1016/j.electacta.2016.04.071",

language = "English",

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TY - JOUR

T1 - Single step electrosynthesis of NiMnGa alloys

AU - Özkale, Berna

AU - Mushtaq, Fajer

AU - Fornell, Jordina

AU - Chatzipirpiridis, George

AU - Martin, Lukas H.J.

AU - Sort, Jordi

AU - Müller, Carlos M.

AU - Pellicer, Eva

AU - Nelson, Bradley J.

AU - Pané, Salvador

PY - 2016/6/20

Y1 - 2016/6/20

N2 - An electrochemical synthesis route for NiMnGa alloys is presented. Thin films of NiMnGa were fabricated by single step electrodeposition from aqueous electrolytes using direct current over a range of current densities. By electrolyte tuning, homogeneous films with high Ga and Mn content could be achieved at current densities as high as -400 mA cm-2. Detailed compositional analysis of the alloys showed that growth was homogeneous and oxygen content was minimized. Films plated at very low current densities were found to be nanocrystalline/amorphous. In order to obtain fully crystalline samples, thermal annealing was carried out. Mechanical characterization was assessed by nanoindentation, and the effect of Ga content on mechanical properties was investigated.

AB - An electrochemical synthesis route for NiMnGa alloys is presented. Thin films of NiMnGa were fabricated by single step electrodeposition from aqueous electrolytes using direct current over a range of current densities. By electrolyte tuning, homogeneous films with high Ga and Mn content could be achieved at current densities as high as -400 mA cm-2. Detailed compositional analysis of the alloys showed that growth was homogeneous and oxygen content was minimized. Films plated at very low current densities were found to be nanocrystalline/amorphous. In order to obtain fully crystalline samples, thermal annealing was carried out. Mechanical characterization was assessed by nanoindentation, and the effect of Ga content on mechanical properties was investigated.

KW - NiMnGa

KW - aqueous electrolyte

KW - single step electrodeposition

KW - thin films

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U2 - 10.1016/j.electacta.2016.04.071

DO - 10.1016/j.electacta.2016.04.071

M3 - Article

AN - SCOPUS:84964414675

SN - 0013-4686

VL - 204

SP - 199

EP - 205

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Single step electrosynthesis of NiMnGa alloys

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Keywords

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