. 2022 Mar 16;7(12):10382–10393. doi: 10.1021/acsomega.1c07063

Table 2. Elastic Constants, Shear Modulus (G), Young’s Modulus (E), Bulk Modulus (B), and Poisson’s Ratio (σ) of SnO₂ Polymorphs^a.

S. No	polymorphs	C₁₁	C₁₂	C₁₃	C₂₂	C₂₃	C₃₃	C₄₄	C₅₅	C₆₆	σ	A^u	E (GPa)	G (GPa)	B (GPa)
1	Pa3̅	417	209					134			0.31	0.08	317	121	279
		327²²	135²²					104²²
2	P4₂/mnm	207	140	126			373	84		177	0.29	1.65	215	84	170
		199²²	131²²	126²²			389²²	86²²		180²²	0.27²²		211²²	81²²	167²²
3	I4/m	101	90	62			270	55		25	0.36	9.77	80	30	96
4	Imma	374	126	126	351	–3	351	84	34	84	0.29	1.72	216	84	170
5	Pnnm	209	142	127	210	128	376	84	85	178	0.29	1.72	216	84	172
		215²²	147	133	215	134	388	86	86	181
6	Pbcn	221	152	138	275	117	327	107	83	129	0.30	1.80	222	86	181
		241²²	154²²	121²²	256²²	83²²	257²²	74²²	92²²	111²²
7	Pbca	325	88.3	88.4	314.1	127.7	333.9	78.2	68.6	55.0	0.32	0.33	365	138	347
		329²²	164²²	135²²	353²²	127²²	346²²	61²²	82²²	75²²
8	Pnma-I	587	307	297	489	261	520	112	87	196	0.39	0.32	333	123	397

The modulus is in GPa.

Table 2. Elastic Constants, Shear Modulus (G), Young’s Modulus (E), Bulk Modulus (B), and Poisson’s Ratio (σ) of SnO2 Polymorphsa.