Andrei Ionut Mardare, Cezarina Cela Mardare, Achim Walter Hassel,
"Anodization behaviour and basic property mapping in the aluminium-erbium system"
, in Journal of Solid State Electrochemistry, Vol. 22, Nummer 3, Springer Berlin Heidelberg, Seite(n) 869, 3-2018, ISSN: 1432-8488
Original Titel:
Anodization behaviour and basic property mapping in the aluminium-erbium system
Sprache des Titels:
Englisch
Original Kurzfassung:
A co-evaporation technique was used for depositing
an Al-Er thin film combinatorial library on borosilicate glass
substrates with Er concentrations between 3 and 21 at.% and a
total compositional resolution of 0.25 at.% mm?1. Scanning
droplet cell microscopy was employed for compositional mapping
of several fundamental properties of mixed oxides grown
on Al-Er thin film alloys. Microstructural and crystallographic
particularities of Al-Er alloys were identified along the library,
and a relevant compositional threshold at around Al-5 at.% Er
was identified. Further, small surface grains in the nanometre
range were found at Al grain boundaries, and an initial
amorphization and/or hexagonal phase nucleation was identified
for Er amounts around 5 at.%. Electrochemical studies
revealed the importance of this compositional threshold, as
distinct maximizations of oxide formation factors and oxide
electrical permittivities were observed.
Forschungs-