Reaction of amorphous NiNb films with crystalline metal overlayers
Conference
·
OSTI ID:6256244
In many cases the stability of amorphous films is influenced by interaction with metallic crystalline overlayers. Such interactions between Au, Ni, Nb and Ta overlayers and a-(Ni-Nb) films are reported. During interdiffusion Au overlayers reacted with a-(Ni-Nb) to form two different adjacent crystalline layers. In order to study the influence of realxation of the amorphous film on overlayer reaction several a-(Ni-Nb) samples were pre-annealed prior to Au deposition. High depth resolution Rutherford Backscattering Spectrometry (RBS) demonstrate that preannealing lowers the diffusion coefficient of Au in a-(Ni-Nb) at 450/sup 0/C from 7.5x10/sup -22/ m/sup 2//s to 8.7x10/sup -23/ m/sup 2//s. During interdiffusion Ta was discovered to be substantially more inert than Au. For example, negligible interdiffusion between Ta and a-(Ni-Nb) at 505/sup 0/C after 25 hours implies a diffusivity of less than 5x10/sup -24/ m/sup 2//s. These observations allow assessment of some of the requirements for increasing the stability of crystalline-amorphous metal film layered structures. 14 references, 4 figures.
- Research Organization:
- Wisconsin Univ., Madison (USA); Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- FG02-84ER45096; AC04-76DP00789
- OSTI ID:
- 6256244
- Report Number(s):
- SAND-84-1292C; CONF-841157-53; ON: DE85005483
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermal stability of amorphous Ni-Nb thin films for use as diffusion barriers
Au diffusion in amorphous and polycrystalline Ni/sub 0. 55/ Nb/sub 0. 45/
Annealing studies of amorphous alloys
Conference
·
Wed Dec 31 23:00:00 EST 1986
·
OSTI ID:5614820
Au diffusion in amorphous and polycrystalline Ni/sub 0. 55/ Nb/sub 0. 45/
Journal Article
·
Wed Sep 01 00:00:00 EDT 1982
· J. Appl. Phys.; (United States)
·
OSTI ID:5079214
Annealing studies of amorphous alloys
Technical Report
·
Thu Mar 31 23:00:00 EST 1983
·
OSTI ID:6223102
Related Subjects
36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
AMORPHOUS STATE
ANNEALING
BACKSCATTERING
COHERENT SCATTERING
CRYSTALLIZATION
DATA
DIFFRACTION
DIFFUSION
ELASTIC SCATTERING
ELEMENTS
EXPERIMENTAL DATA
FILMS
GOLD
HEAT TREATMENTS
HIGH TEMPERATURE
INFORMATION
METALS
NICKEL
NICKEL ALLOYS
NIOBIUM
NIOBIUM ALLOYS
NUMERICAL DATA
PERMEABILITY
PHASE TRANSFORMATIONS
RUTHERFORD SCATTERING
SCATTERING
STABILITY
TANTALUM
THIN FILMS
TRANSITION ELEMENTS
X-RAY DIFFRACTION
360101* -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
AMORPHOUS STATE
ANNEALING
BACKSCATTERING
COHERENT SCATTERING
CRYSTALLIZATION
DATA
DIFFRACTION
DIFFUSION
ELASTIC SCATTERING
ELEMENTS
EXPERIMENTAL DATA
FILMS
GOLD
HEAT TREATMENTS
HIGH TEMPERATURE
INFORMATION
METALS
NICKEL
NICKEL ALLOYS
NIOBIUM
NIOBIUM ALLOYS
NUMERICAL DATA
PERMEABILITY
PHASE TRANSFORMATIONS
RUTHERFORD SCATTERING
SCATTERING
STABILITY
TANTALUM
THIN FILMS
TRANSITION ELEMENTS
X-RAY DIFFRACTION