
人工晶体学报 ›› 2026, Vol. 55 ›› Issue (4): 566-573.DOI: 10.16553/j.cnki.issn1000-985x.2025.0255
收稿日期:2025-12-22
出版日期:2026-04-20
发布日期:2026-05-19
JIANG Qianyue1,2(
), LI Rukang1,2(
)
Received:2025-12-22
Online:2026-04-20
Published:2026-05-19
Contact:
LI Rukang, professor. E-mail: rkli@mail.ipc.ac.cnAbout author:JIANG Qianyue (2000—), from Shandong Provice, doctoral candidate. E-mail: jiangqianyue22@mails.ucas.ac.cn
Supported by:摘要: 稀土硅酸盐RE2SiO5(RE为稀土)在激光、闪烁体、热障涂层和量子存储等领域都具有重要应用。该系列化合物通常表现出两种不同的相结构:X1型(低温相,空间群P21/c)和X2型(高温相,空间群C2/c)。每种结构包含两个独特的稀土离子占据位点,其配位数(CNs)各不相同。为了更好地理解这些化合物的相结构相对稳定性及掺杂稀土离子的优先占据位点,本文借助第一性原理计算软件CP2K和计算速度较快且结构优化结果较好的PBEsol泛函对该系列化合物进行了理论计算研究。结构优化和数据分析后发现,色散力矫正对于正确预测RE2SiO5两相之间的相对结构稳定性起着至关重要的作用。此外,系统研究不同尺寸的稀土离子在Y2SiO5中掺杂行为的结果表明,在两种相中,Y1位点(X1型的配位数为9,X2型的配位数为7)更倾向于被尺寸较大的离子,如La3+占据;而尺寸较小的离子,如Sc3+在Y2位点(X1型的配位数为7,X2型的配位数为6)则表现出更高的稳定性。本文的研究为这类晶体的结构特性和掺杂机制提供了一定的参考价值。
中图分类号:
姜千玥, 李如康. RE2SiO5 (RE=Sc, Y, La)结构稳定性及掺杂效应的理论研究[J]. 人工晶体学报, 2026, 55(4): 566-573.
JIANG Qianyue, LI Rukang. Theoretical Studies on the Structural Stability and Doping Effects of RE2SiO5 (RE=Sc, Y, La)[J]. Journal of Synthetic Crystals, 2026, 55(4): 566-573.
Fig.1 Schematic diagrams of two structures of Y2SiO5. (a) X1-type structure of Y2SiO5; (b) coordination numbers of Y1 and Y2 sites in X1 phase; (c) X2-type structure of Y2SiO5; (d) coordination numbers of Y1 and Y2 sites in X2 phase
| Structure | Method | a/Å | b/Å | c/Å | β/(°) | V/Å3 |
|---|---|---|---|---|---|---|
| X1-type | Exp. [ | 9.014 | 6.928 | 6.643 | 106.68 | 397.38 |
| Cal. | 9.045 | 6.863 | 6.676 | 106.32 | 397.72 | |
| Cal. (DFT-D3) | 8.978 | 6.832 | 6.642 | 106.35 | 390.88 | |
| X2-type | Exp. [ | 14.406 | 6.728 | 10.421 | 122.19 | 854.75 |
| Cal. | 14.426 | 6.734 | 10.383 | 122.13 | 854.21 | |
| Cal. (DFT-D3) | 14.381 | 6.682 | 10.319 | 122.21 | 839.03 |
Table 1 Unit cell parameters and volume for Y2SiO5 in both X1-type and X2-type structures
| Structure | Method | a/Å | b/Å | c/Å | β/(°) | V/Å3 |
|---|---|---|---|---|---|---|
| X1-type | Exp. [ | 9.014 | 6.928 | 6.643 | 106.68 | 397.38 |
| Cal. | 9.045 | 6.863 | 6.676 | 106.32 | 397.72 | |
| Cal. (DFT-D3) | 8.978 | 6.832 | 6.642 | 106.35 | 390.88 | |
| X2-type | Exp. [ | 14.406 | 6.728 | 10.421 | 122.19 | 854.75 |
| Cal. | 14.426 | 6.734 | 10.383 | 122.13 | 854.21 | |
| Cal. (DFT-D3) | 14.381 | 6.682 | 10.319 | 122.21 | 839.03 |
| Method | Space group | Sc2SiO5 | Y2SiO5 | La2SiO5 |
|---|---|---|---|---|
| Only PBEsol | X1 | 0 | 0 | 0 |
| X2 | -57.14 | -51.70 | +223.13 | |
| PBEsol+D3(BJ) | X1 | 0 | 0 | 0 |
| X2 | +32.65 | +57.14 | +306.67 |
Table 2 Relative molar energy differences* (ΔE, in meV/mol) from DFT calculations between the two structures of RE2SiO5, where RE=Sc, Y and La
| Method | Space group | Sc2SiO5 | Y2SiO5 | La2SiO5 |
|---|---|---|---|---|
| Only PBEsol | X1 | 0 | 0 | 0 |
| X2 | -57.14 | -51.70 | +223.13 | |
| PBEsol+D3(BJ) | X1 | 0 | 0 | 0 |
| X2 | +32.65 | +57.14 | +306.67 |
| Structure | Compound | Doped site | a/Å | b/Å | c/Å | β/(°) | V/Å3 | Total energy (Hartree) |
|---|---|---|---|---|---|---|---|---|
| X1-type | La-doped | Y1 | 9.343 | 6.990 | 6.861 | 109.20 | 423.15 | -617.673 19 |
| Y2 | 8.874 | 7.620 | 6.692 | 108.66 | 428.72 | -617.623 42 | ||
| Sc-doped | Y1 | 8.777 | 6.542 | 6.450 | 97.67 | 367.08 | -677.461 93 | |
| Y2 | 8.803 | 6.701 | 6.438 | 106.15 | 364.78 | -677.469 44 | ||
| Undoped | — | 8.978 | 6.832 | 6.642 | 106.35 | 390.88 | -644.210 96 | |
| X2-type | La-doped | Y1 | 14.589 | 6.765 | 10.753 | 122.28 | 897.13 | -1 235.292 93 |
| Y2 | 14.485 | 6.891 | 10.567 | 121.67 | 898.46 | -1 235.186 85 | ||
| Sc-doped | Y1 | 14.100 | 6.549 | 9.934 | 121.69 | 780.58 | -1 354.845 03 | |
| Y2 | 14.002 | 6.511 | 10.042 | 122.23 | 774.48 | -1 354.978 20 | ||
| Undoped | — | 14.381 | 6.682 | 10.319 | 122.21 | 839.03 | -1 288.404 53 |
Table 3 Unit cell parameters, volume and total energy from DFT calculations for RE-doped Y2SiO5 both in X1-type and X2-type structures
| Structure | Compound | Doped site | a/Å | b/Å | c/Å | β/(°) | V/Å3 | Total energy (Hartree) |
|---|---|---|---|---|---|---|---|---|
| X1-type | La-doped | Y1 | 9.343 | 6.990 | 6.861 | 109.20 | 423.15 | -617.673 19 |
| Y2 | 8.874 | 7.620 | 6.692 | 108.66 | 428.72 | -617.623 42 | ||
| Sc-doped | Y1 | 8.777 | 6.542 | 6.450 | 97.67 | 367.08 | -677.461 93 | |
| Y2 | 8.803 | 6.701 | 6.438 | 106.15 | 364.78 | -677.469 44 | ||
| Undoped | — | 8.978 | 6.832 | 6.642 | 106.35 | 390.88 | -644.210 96 | |
| X2-type | La-doped | Y1 | 14.589 | 6.765 | 10.753 | 122.28 | 897.13 | -1 235.292 93 |
| Y2 | 14.485 | 6.891 | 10.567 | 121.67 | 898.46 | -1 235.186 85 | ||
| Sc-doped | Y1 | 14.100 | 6.549 | 9.934 | 121.69 | 780.58 | -1 354.845 03 | |
| Y2 | 14.002 | 6.511 | 10.042 | 122.23 | 774.48 | -1 354.978 20 | ||
| Undoped | — | 14.381 | 6.682 | 10.319 | 122.21 | 839.03 | -1 288.404 53 |
| Structure | Y site | La-doping | Sc-doping |
|---|---|---|---|
| X1-Y2SiO5 | Y1 | 0 | 0 |
| Y2 | +338.58 | -51.09 | |
| X2-Y2SiO5 | Y1 | 0 | 0 |
| Y2 | +364.02 | -452.97 |
Table 4 Relative molar energy differences (ΔE, in meV/mol) from DFT calculations among the doping structures of RE-doped Y2SiO5
| Structure | Y site | La-doping | Sc-doping |
|---|---|---|---|
| X1-Y2SiO5 | Y1 | 0 | 0 |
| Y2 | +338.58 | -51.09 | |
| X2-Y2SiO5 | Y1 | 0 | 0 |
| Y2 | +364.02 | -452.97 |
| Structure | RE3+ | Y1 site | Y2 site |
|---|---|---|---|
| X1-type | Y | 0.779 | 0.696 |
| La | 0.881 | 0.797 | |
| Sc | 0.630* | 0.630* | |
| X2-type | Y | 0.696 | 0.652 |
| La | 0.797 | 0.748 | |
| Sc | 0.630* | 0.540 |
Table 5 Values of the radius ratio for X1-type and X2-type structures of RE-doped Y2SiO5
| Structure | RE3+ | Y1 site | Y2 site |
|---|---|---|---|
| X1-type | Y | 0.779 | 0.696 |
| La | 0.881 | 0.797 | |
| Sc | 0.630* | 0.630* | |
| X2-type | Y | 0.696 | 0.652 |
| La | 0.797 | 0.748 | |
| Sc | 0.630* | 0.540 |
| [1] | TOROPOV N A, BONDAR I A. Silicates of the rare earth elements [J]. Russ Chem Bull, 1961, 10(4): 502-8. |
| [2] | WARSHAW I, ROY R. Polymorphism of the rare earth sesquioxides1[J]. The Journal of Physical Chemistry, 1961, 65(11): 2048-2051. |
| [3] | HARRIS L A, FINCH C B. Crystallographic data for Er2SiO5 and Y2SiO5 [J]. American Mineralogist, 1965, 50(9): 1493-1495. |
| [4] | TIAN Z L, ZHENG L Y, WANG J M, et al. Theoretical and experimental determination of the major thermo-mechanical properties of RE2SiO5 (RE=Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y) for environmental and thermal barrier coating applications[J]. Journal of the European Ceramic Society, 2016, 36(1): 189-202. |
| [5] | JACQUEMET M, JACQUEMET C, JANEL N, et al. Efficient laser action of Yb∶LSO and Yb∶YSO oxyorthosilicates crystals under high-power diode-pumping[J]. Applied Physics B, 2005, 80(2): 171-176. |
| [6] | THIBAULT F, PELENC D, DRUON F, et al. Efficient diode-pumped Yb3+∶Y2SiO5 and Yb3+∶Lu2SiO5 high-power femtosecond laser operation[J]. Optics Letters, 2006, 31(10): 1555-1557. |
| [7] | KANG F W, ZHANG Y, PENG M Y. Controlling the energy transfer via multi luminescent centers to achieve white light/tunable emissions in a single-phased X2-type Y2SiO5∶Eu3+, Bi3+ phosphor for ultraviolet converted LEDs[J]. Inorganic Chemistry, 2015, 54(4): 1462-1473. |
| [8] | COOKE D W, MCCLELLAN K J, BENNETT B L, et al. Crystal growth and optical characterization of cerium-doped Lu1.8Y0.2SiO5 [J]. Journal of Applied Physics, 2000, 88(12): 7360-7362. |
| [9] | VAN EIJK C W E. Development of inorganic scintillators[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1997, 392(1/2/3): 285-290. |
| [10] | MELCHER C L, ERIKSSON L A, AYKAC M, et al. Current and future use of LSO∶Ce scintillators in pet[M]//Radiation Detectors for Medical Applications. Springer Netherlands, 2006: 243-257. |
| [11] | HAM B S, HEMMER P R, SHAHRIAR M S. Efficient electromagnetically induced transparency in a rare-earth doped crystal[J]. Optics Communications, 1997, 144(4/5/6): 227-230. |
| [12] | ZHONG M J, HEDGES M P, AHLEFELDT R L, et al. Optically addressable nuclear spins in a solid with a six-hour coherence time[J]. Nature, 2015, 517(7533): 177-180. |
| [13] | TURUKHIN A V, SUDARSHANAM V S, SHAHRIAR M S, et al. Observation of ultraslow and stored light pulses in a solid[J]. Physical Review Letters, 2002, 88(2): 023602. |
| [14] | FELSCHE J. The crystal chemistry of the rare-earth silicates[M]//Rare Earths. Berlin, Heidelberg: Springer, 1973: 99-197. |
| [15] | CANNAS C, MUSINU A, PICCALUGA G, et al. Advances in the structure and microstructure determination of yttrium silicates using the Rietveld method[J]. Journal of Solid State Chemistry, 2005, 178(5): 1526-1532. |
| [16] | ZHANG X, ZHANG C Y, WANG X F, et al. Investigation on doping behavior of Ho ions in Lu2SiO5 lattice by XRD Rietveld refinement and first-principles calculations[J]. Journal of Solid State Chemistry, 2024, 331: 124505. |
| [17] | MIRZAI A, AHADI A, MELIN S, et al. First-principle investigation of doping effects on mechanical and thermodynamic properties of Y2SiO5 [J]. Mechanics of Materials, 2021, 154: 103739. |
| [18] | WEN J, DUAN C K, NING L X, et al. Spectroscopic distinctions between two types of Ce3+ ions in X2-Y2SiO5: a theoretical investigation[J]. The Journal of Physical Chemistry A, 2014, 118(27): 4988-4994. |
| [19] | LIN J, SU Q, WANG S B, et al. Influence of crystal structure on the luminescence properties of bismuth(III), europium(III) and dysprosium(III) in Y2SiO5 [J]. Journal of Materials Chemistry, 1996, 6(2): 265-269. |
| [20] | CHING W Y, OUYANG L Z, XU Y N. Electronic and optical properties of Y2SiO5 and Y2Si2O7 with comparisons to α-SiO2 and Y2O3 [J]. Physical Review B, 2003, 67(24): 245108. |
| [21] | LUO Y X, WANG J M, WANG J Y, et al. Theoretical predictions on elastic stiffness and intrinsic thermal conductivities of yttrium silicates[J]. Journal of the American Ceramic Society, 2014, 97(3): 945-951. |
| [22] | JIA Y C, MIGLIO A, GONZE X, et al. Ab-initio study of oxygen vacancy stability in bulk and cerium-doped lutetium oxyorthosilicate[J]. Journal of Luminescence, 2018, 204: 499-505. |
| [23] | SU F, XU G T, YAO Z H, et al. First-principles calculations of Y-Si-O nanoclusters and effect of Si on microstructure and mechanical properties of 12Cr ODS steel in vacuum sintering system[J]. Metals, 2022, 12(1): 155. |
| [24] | JIANG F R, CHENG L F, WEI H J, et al. Hot corrosion behavior of Lu2SiO5 and La2SiO5 in a molten Na2SO4 environment: a first-principles corrosion resistance investigation[J]. Ceramics International, 2019, 45(12): 15532-15537. |
| [25] | WANG L F, FAN L C, WANG T, et al. Investigation of phase evolution and Gd occupation in (Lu1- x Gd x )2SiO5 lattice by Rietveld refinement and DFT simulation[J]. Journal of Solid State Chemistry, 2021, 300: 122252. |
| [26] | ZHU J J, GU M, JIA L C, et al. Structural properties of Lu2SiO5 doped with rare-earth elements[J]. Materials Letters, 2019, 256: 126410. |
| [27] | MIRZAI A, AHADI A. First-principles study of luminescence and electronic properties of Ce-doped Y2SiO5 [J]. The Journal of Chemical Physics, 2023, 159(16): 164301. |
| [28] | ZHU J J, GU M, LIU X L, et al. Phase transition and elastic and optical properties of Lu2SiO5 [J]. Optical Materials, 2013, 35(9): 1659-1663. |
| [29] | CSONKA G I, PERDEW J P, RUZSINSZKY A, et al. Assessing the performance of recent density functionals for bulk solids[J]. Physical Review B, 2009, 79(15): 155107. |
| [30] | LABAT F, BRÉMOND E, CORTONA P, et al. Assessing modern GGA functionals for solids[J]. Journal of Molecular Modeling, 2013, 19(7): 2791-2796. |
| [31] | TERENTJEV A V, CONSTANTIN L A, PITARKE J M. Dispersion-corrected PBEsol exchange-correlation functional[J]. Physical Review B, 2018, 98(21): 214108. |
| [32] | AYYASAMY M V, BALACHANDRAN P V. Correlation between d-orbital bandwidth and local coordination environment in RE2SiO5 compounds with implications in minimizing the coefficient of thermal expansion anisotropy (RE=Sc, Y, La)[J]. AIP Advances, 2022, 12(4): 045012. |
| [33] | KÜHNE T D, IANNUZZI M, DEL BEN M, et al. CP2K: an electronic structure and molecular dynamics software package-quickstep: efficient and accurate electronic structure calculations[J]. The Journal of Chemical Physics, 2020, 152(19): 194103. |
| [34] | PERDEW J P, RUZSINSZKY A, CSONKA G I, et al. Restoring the density-gradient expansion for exchange in solids and surfaces[J]. Physical Review Letters, 2008, 100(13): 136406. |
| [35] | GRIMME S, ANTONY J, EHRLICH S, et al. A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu[J]. The Journal of Chemical Physics, 2010, 132(15): 154104. |
| [36] | GRIMME S, EHRLICH S, GOERIGK L. Effect of the damping function in dispersion corrected density functional theory[J]. Journal of Computational Chemistry, 2011, 32(7): 1456-1465. |
| [37] | MOMMA K, IZUMI F. VESTA: a three-dimensional visualization system for electronic and structural analysis[J]. Journal of Applied Crystallography, 2008, 41(3): 653-658. |
| [38] | LU T, CHEN F W. Multiwfn: a multifunctional wavefunction analyzer[J]. Journal of Computational Chemistry, 2012, 33(5): 580-592. |
| [39] | LU T. A comprehensive electron wavefunction analysis toolbox for chemists, Multiwfn[J]. The Journal of Chemical Physics, 2024, 161(8): 082503. |
| [40] | WANG J G, TIAN S J, LI G B, et al. Preparation and X-ray characterization of low-temperature phases of R2SiO5 (R=rare earth elements)[J]. Materials Research Bulletin, 2001, 36(10): 1855-1861. |
| [41] | DENAULT K A, BRGOCH J, KLOSS S D, et al. Average and local structure, Debye temperature, and structural rigidity in some oxide compounds related to phosphor hosts[J]. ACS Applied Materials & Interfaces, 2015, 7(13): 7264-7272. |
| [42] | RODEWALD U C, ZHENG L, HEYING B, et al. Rare earth site preference in the doped laser host material Sc2SiO5: a single-crystal X-Ray study[J]. Zeitschrift für Naturforschung B, 2012, 67: 113. |
| [43] | FUKUDA K, IWATA T, CHAMPION E. Crystal structure of lanthanum oxyorthosilicate, La2SiO5 [J]. Powder Diffraction, 2006, 21(4): 300-303. |
| [44] | ALIZADEH Y, WELLS J P R, REID M F, et al. Laser site-selective spectroscopy of Nd3+-doped Y2SiO5 [J]. Journal of Luminescence, 2021, 234: 117959. |
| [45] | DENOYER A, LÉVESQUE Y, JANDL S, et al. Cooperative emission study in ytterbium-doped Y2SiO5 [J]. Journal of Luminescence, 2008, 128(9): 1389-1393. |
| [46] | MANSUY C, LEROUX F, MAHIOU R, et al. Preferential site substitution in sol-gel derived Eu3+ doped Lu2SiO5: a combined study by X-ray absorption and luminescence spectroscopies[J]. Journal of Materials Chemistry, 2005, 15(38): 4129-4135. |
| [47] | PAULING L. The nature of the chemical bond[M]. New York: Cornell University Press, 1960. |
| [48] | SHANNON R D. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides[J]. Acta Crystallographica Section A, 1976, 32(5): 751-767. |
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