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Figure 2
Primary (σ, π) and secondary (σ′, π′) states of polarization. Corresponding wavevectors q and q′ subtend an angle 2θ. The Laue condition for diffraction is met when qq′ coincides with a reflection vector (h, k, l) of the monoclinic reciprocal lattice. Crystal vectors that define local axes for Ni ions (ξ, η, ζ) and the depicted Cartesian (x, y, z) coincide in the nominal setting of the crystal.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
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