Table 1 Lattice parameters of Mn-doped β-CPP and α-CPP.

From: Synthesis, structural and luminescent properties of Mn-doped calcium pyrophosphate (Ca2P2O7) polymorphs

Sample

a, Å

b, Å

c, Å

V, Å3

β-CPP

6.681

6.681

24.126

1076.8

α-CPP

12.644

8.522

5.312

572.3

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