Table 1. Least-Square Fitted BM-EoS Parameters of the Unit-Cell Volume and Lattice Parameters for Various End Member MSO4·H2O Polymorphs.
| phase, p range (GPa) | X0 | K0, M0 (GPa) | K′, M′ | phase P range (GPa) | X0 | K0, M0 (GPa) | K′, M′ |
|---|---|---|---|---|---|---|---|
| α-FeSO4·H2Oa | V0 = 365.2(3) | K0 = 45.2(2) | K′ = 6.7(1) | α-NiSO4·H2O | V0 = 342.3(1) | K0 = 63.4(1.0) | K′ = 4b |
| 10–4 – 5.94 | a0 = 7.082(1) | M0 = 496(9) | M′ =1.3(3.2) | 10–4 – 2.30 | a0 = 6.826(1) | M0 = 401(12) | M′ =12b |
| b0 = 7.553(1) | M0 = 109(2) | M′ = 36(2) | b0 = 7.598(1) | M0 = 175(4) | M′ = 12b | ||
| c0 = 7.779(1) | M0 = 93.8(7) | M′ = 13.1(4) | c0 = 7.403(1) | M0 = 200(4) | M′ = 12b | ||
| β-FeSO4·H2Oa | V0 = 367.0(4) | K0 = 45.1(6) | K′ = 5.4c | β-NiSO4·H2O | V0 = 342.1(6) | K0 = 61.3(1.9) | K′ = 4b |
| 6.15–8.40 | a0 = 7.087(4) | M0 = 471(19) | M′ = 3.0c | 4.00–6.00 | a0 = 6.838(4) | M0 = 332(16) | M′ = 12b |
| b0 = 7.54(1) | M0 = 112(7) | M′ = 36.8c | b0 = 7.576(6) | M0 = 191(7) | M′ = 12b | ||
| c0 = 7.784(4) | M0 = 102(1) | M′=9.1c | c0 = 7.414(6) | M0 = 169(6) | M′=12b | ||
| α-MgSO4·H2Oa | V0 = 355.5(4) | K0 = 48.1(5) | K′ = 8.1(6) | γ-NiSO4·H2O | V0 = 339.5(8) | K0 = 68.4(2.0) | K′ = 4b |
| 10–4 – 2.50 | a0 = 6.909 (1) | M0 = 297(12) | M′ = 21(14) | 6.50–9.00 | a0 = 6.850(6) | M0 = 301(12) | M′ = 12b |
| b0 = 7.628(1) | M0 = 142(4) | M′ = 30(5) | b0 = 7.523(6) | M0 = 264(9) | M′ = 12b | ||
| c0 = 7.642(1) | M0 = 94.1(1.3) | M′ = 13.1(4) | c0 = 7.405(7) | M0 = 177(6) | M′ = 12b | ||
| β-MgSO4·H2Oa | V0 = 355.8(1.8) | K0 = 49.3(5.5) | K′ = 4.8(1.0) | ||||
| 4.75–8.40 | a0 = 6.911(1) | M0 = 383(27) | M′ = −6(2) | ||||
| b0 = 7.649(1) | M0 = 83.5(5.5) | M′ = 45.9(5.5) | |||||
| c0 = 7.615(14) | M0 = 122(11) | M′ = 8.0(1.5) |