Ordering and the relaxation of elastic strain in thin Au-Ni films grown on Au(001)

Journal Article · Thu Oct 31 23:00:00 EST 1996 · Acta Materialia

DOI:https://doi.org/10.1016/1359-6454(96)00070-5· OSTI ID:415430

Dynna, M; Marty, A ^[1]; Gilles, B ^[2]; Patrat, G ^[3]

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1. CEA, Grenoble (France). Dept. de Recherche Fondamentale sur la Matiere Condensee
2. ENSEEG, Saint Martin d`Heres (France)
3. CNRS, Grenoble (France). Lab. de Cristallographie

Epitaxial Au{sub 1{minus}x}Ni{sub x} solid solutions with x ranging from 0.2 to 0.6 have been grown by MBE on Au(001) at room temperature. Their relaxation has been studied in-situ by RHEED and ex-situ by GIXD, TEM and HREM. All of the films studied relax via the introduction of a/6<211> partial dislocations and microtwins. Furthermore, alloys ranging in composition from 30 to 60 at.% Ni undergo an ordering process during growth in which pseudo-periodic antiphase structures based on the L1{sub 0} unit cell are formed. The origin of this state of order is attributed primarily to the large misfit existing between the alloy films and Au(001).

• OSTI ID: 415430
• Journal Information: Acta Materialia, Journal Name: Acta Materialia Journal Issue: 11 Vol. 44; ISSN 1359-6454; ISSN ACMAFD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHEMICAL COMPOSITION
DISLOCATIONS
ELECTRON DIFFRACTION
GOLD
GOLD ALLOYS
MICROSTRUCTURE
MOLECULAR BEAM EPITAXY
NICKEL ALLOYS
SOLID SOLUTIONS
STRAINS
STRESS RELAXATION
SUBSTRATES
TRANSMISSION ELECTRON MICROSCOPY
TWINNING
X-RAY DIFFRACTION