Table 2 Lattice parameters of the KNTN crystals.

From: Origin of giant piezoelectric effect in lead-free K1−xNaxTa1−yNbyO3 single crystals

Crystal

a(Å)

b(Å)

c(Å)

K0.30Na0.70Ta0.37Nb0.63O3

5.6061

3.9385

5.5876

K0.36Na0.64Ta0.40Nb0.60O3

5.6083

3.9433

5.5828

K0.39Na0.61Ta0.42Nb0.58O3

5.6290

3.9449

5.5828

K0.3Na0.7NbO340

5.64304

3.93187

5.61260

  1. aThe lattice parameters corresponding to a symmetric orthorhombic cell were converted into the lattice parameters for a pseudo-monoclinic cell (a′ = c′, b and β) using the following formula a = 2d sin (β/2), c = 2a′ sin (β/2)41.
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