Abstract
Measuring intrinsic macro stresses in fibre-textured thin films have always been challenging. Due to the nature of preferential orientation in these films, only d-spacings aligned with the film surface are observable in Bragg-Brentano X-ray diffraction scans, and to collect sufficient diffraction data needed for the stress calculation, a sample stage with tilt capabilities is essentially required. In this article, a new method is developed to lift this requirement. Based on the thin film crystal structure, an incident angle for asymmetrical XRD configuration is calculated to reveal tilted planes belonging to the same group of crystallites which are the textured majority. Measurement of d-spacing for this angle of incidence in combination with the Bragg-Brentano configuration is shown to successfully extract stress-free lattice parameter and the internal stress of the cubic metallic thin film. This method can also be adapted to determine stress and strain in polycrystalline thin films.
| Original language | English |
|---|---|
| Article number | 108063 |
| Journal | Materials and Design |
| Volume | 181 |
| DOIs | |
| Publication status | Published - 5 Nov 2019 |
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Determining intrinsic stress and strain state of fibre-textured thin films by x-ray diffraction measurements using combined asymmetrical and Bragg-Brentano configurations. / Motazedian, Fakhrodin; Wu, Zhigang; Zhang, Junsong; Samsam Shariat, Bashir; Jiang, Daqiang; Martyniuk, Mariusz; Liu, Yinong; Yang, Hong.
In: Materials and Design, Vol. 181, 108063, 05.11.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Determining intrinsic stress and strain state of fibre-textured thin films by x-ray diffraction measurements using combined asymmetrical and Bragg-Brentano configurations
AU - Motazedian, Fakhrodin
AU - Wu, Zhigang
AU - Zhang, Junsong
AU - Samsam Shariat, Bashir
AU - Jiang, Daqiang
AU - Martyniuk, Mariusz
AU - Liu, Yinong
AU - Yang, Hong
PY - 2019/11/5
Y1 - 2019/11/5
N2 - Measuring intrinsic macro stresses in fibre-textured thin films have always been challenging. Due to the nature of preferential orientation in these films, only d-spacings aligned with the film surface are observable in Bragg-Brentano X-ray diffraction scans, and to collect sufficient diffraction data needed for the stress calculation, a sample stage with tilt capabilities is essentially required. In this article, a new method is developed to lift this requirement. Based on the thin film crystal structure, an incident angle for asymmetrical XRD configuration is calculated to reveal tilted planes belonging to the same group of crystallites which are the textured majority. Measurement of d-spacing for this angle of incidence in combination with the Bragg-Brentano configuration is shown to successfully extract stress-free lattice parameter and the internal stress of the cubic metallic thin film. This method can also be adapted to determine stress and strain in polycrystalline thin films.
AB - Measuring intrinsic macro stresses in fibre-textured thin films have always been challenging. Due to the nature of preferential orientation in these films, only d-spacings aligned with the film surface are observable in Bragg-Brentano X-ray diffraction scans, and to collect sufficient diffraction data needed for the stress calculation, a sample stage with tilt capabilities is essentially required. In this article, a new method is developed to lift this requirement. Based on the thin film crystal structure, an incident angle for asymmetrical XRD configuration is calculated to reveal tilted planes belonging to the same group of crystallites which are the textured majority. Measurement of d-spacing for this angle of incidence in combination with the Bragg-Brentano configuration is shown to successfully extract stress-free lattice parameter and the internal stress of the cubic metallic thin film. This method can also be adapted to determine stress and strain in polycrystalline thin films.
KW - Crystalline texture
KW - Elastic strain
KW - Internal stress
KW - Thin film
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=85069877505&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2019.108063
DO - 10.1016/j.matdes.2019.108063
M3 - Article
VL - 181
JO - MATERIALS & DESIGN
JF - MATERIALS & DESIGN
SN - 0264-1275
M1 - 108063
ER -