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Chair of Materials and Surface Engineering
Materials and Surface Engineering
Chair of Materials and Surface Engineering 

X-ray diffractometer D8 DISCOVER (Bruker AXS)

  • Vertical goniometer in theta/theta configuration with centric Euler cradle for Bragg-Brentano and parallel beam geometry
  • Measurement positioning with laser video system

 

Technical details:

Rotation:

  • 0° ≤ φ ≤ 360° (minimum step size φ = 0.0002°)

Tilting:

  • -11° ≤ ψ ≤ +97° (minimum step size ψ = 0.0002°)

Primary beam path: 

  • X-ray tube with Cu anode and optional line or point focus
  • Gap diaphragm for Bragg-Brentano geometry
  • Göbel mirror or polycap for parallel beam geometry
  • Irradiated area Ø ≥ 150 µm (point focus) and 3.5 cm × ≥ 2mm to 1 cm × 200 µm (line focus)

Secondary beam path:  optionally with

  • Area detector (VǺNTEC–500)
  • Point detector (scintillation counter)
  • Energy dispersive point detector (Sol-XE)

Angle range:

  • 0° ≤ 2 θ ≤ 130° (minimum step size 2 θ = 0.0001°)

Diffraction methods:

  • Phase analysis (qualitative, quantitative)
  • Determination of the degree of crystallinity
  • Determination of the mean particle size
  • (Intrinsic) stress analysis
  • Texture analysis
  • Measurement of layer thicknesses and interfacial roughnesses

Sample request:

  • crystalline and/or amorphous (compact, powder, thin films)
  • Maximum dimensions 10 cm × 10 cm × ≤ 3 cm