 | Acta Crystallographica Section B Acta Crystallographica Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS |
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![[Figure 2]](yh5031fig2mag.jpg)
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Figure 2
The c versus a unit-cell parameters for several NZP-type materials with substitutions on the M and R sites. The filled black circles show the effect of substitution of the M (M1 and/or M2) site cation in (M)2Zr4P6O24, where M = Li, Na, K, Rb and Cs. The red triangles show the effect of substitution of the R site cation in Na2(R)4P6O24, where R = Ge, Ti, Sn, Zr and Hf. The black and red arrows indicate the directions of increasing size of atomic radii for the M and R sites, respectively. Tabulated unit-cell parameter values from the ICDD database (Kabekkodu et al., 2002  ) are given in Table S4. |
![[Figure 2]](yh5031fig2.jpg)
| STRUCTURAL SCIENCE CRYSTAL ENGINEERING MATERIALS |
ISSN: 2052-5206
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