This state-of-the-art instrument was purchased in 2013, and with the possibility of automatic sample changer for up to 90 samples, makes this instrument the main workhorse of the lab.
Instrument specifications
- CuKα radiation
- 2.5° primary and secondary Soller slits
- 60-90 position sample changer
- LynxEye™ SuperSpeed Detector
Not so good for:
...
Description
Bruker D8 A25 DaVinci X-ray Diffractometer with CuKα radiation. LynxEye™ SuperSpeed Detector. 90 position sample changer.
Well suited for:
- Fast XRD scans for phase identification
- Samples that can wait in a queue for hours before being measured (the engineer will load the samples into the instrument every morning and afternoon)
- Energy-discriminating detector makes it useful also for the fluorescing elements (Fe, Co, Mn)
...
- )
Not so good for:
- Samples that change fast in air (then the D8 Focus may be better to use, due to the booking system)
- Samples that doesn't fit the standard sample holders.
Photo: Kristin Høydalsvik Wells
Specifications, standard powder diffraction set-
...
up
Bragg-Brentano geometry
θ–θ operating mode
- 2.5° primary and secondary Soller slits
Data collection from 5 to 105° 2θ (typically)
Variable divergence slit: "V6" means that the divergence slit (the slit between the X-ray source and the sample) opens automatically such that the illuminated length on the sample always remains 6 mm).
Standard measurements:
- Highly crystalline samples: step size: ca. 0.010 °/step
- Crystalline samples: step size: ca. 0.013 °/step
- Low crystallinity samples: step size: ca. 0.044 °/step
(for exact numbers, please consult the measurement PC - ask Lab Manager or substitutes for help if needed).
Specifications, grazing-incidence diffraction (GIXRD) set-up (
...
by request)
Well-suited for studying the structure of polycrystalline films on substrates.
- Göbel mirror → parallel beam
- Incident angle fixed at grazing angle (for example 0.5 to 3°)
- Scanning detector angle (typically 5 to 80 degrees 2θ)
Before you begin
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- Equipment may not be used without training.
- Access to the lab will be given after training.
Relevant links:
- See XRD-lab info 2024.