Structural properties of pure and Fe-doped Yb films prepared by vapor condensation

Chachi Rojas Ayala, E. C. Passamani, N. M. Suguihiro, F. J. Litterst, E. Baggio Saitovitch

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Ytterbium and iron-doped ytterbium films were prepared by vapor quenching on Kapton substrates at room temperature. Structural characterization was performed by X-ray diffraction and transmission electron microscopy. The aim was to study the microstructure of pure and iron-doped films and thereby to understand the effects induced by iron incorporation. A coexistence of face centered cubic and hexagonal close packed-like structures was observed, the cubic-type structure being the dominant contribution. There is an apparent thickness dependence of the cubic/hexagonal relative ratios in the case of pure ytterbium. Iron-clusters induce a crystalline texture effect, but do not influence the cubic/hexagonal volume fraction. A schematic model is proposed for the microstructure of un-doped and iron-doped films including the cubic- and hexagonal-like structures, as well as the iron distribution in the ytterbium matrix.

Original languageEnglish
Pages (from-to)108-114
Number of pages7
JournalMaterials Characterization
Volume96
DOIs
StatePublished - Oct 2014
Externally publishedYes

Bibliographical note

Funding Information:
This work has been made possible by financial support from FAPERJ ( BOLSA NOTA 10 E-26/100.382/2012 ), CAPES , FAPES (Grant No. 54658551/11 and 54866286/11 ), CNPq/PCI , and Brazilian-German research programs financed by CNPq-DFG ( 444BRA-113/55/0-1 ) and CAPES-DAAD ( PROBRAL, Ref 389/13389/13 ). The authors gratefully acknowledge the use of the facilities for electron microscopy in the LabNano/CBPF, Rio de Janeiro-BR.

Keywords

  • Fe clusters
  • Fe-doped Yb films
  • Transmission electron microscopy
  • Vapor condensation
  • Yb films

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