[1] [1] SONG Tianxiu, DING Shihua, ZHANG Yao, et al. J Chin Ceram Soc, 2018, 46(9): 1191-1195.

[2] [2] WANG Hongyi, LIU Peng, WEI Jingsheng, et al. J Chin Ceram Soc, 2015, 43(9): 1203-1209.

[3] [3] GUO H H, ZHOU D, PANG L X, et al. Microwave dielectric properties of low firing temperature stable scheelite structured (Ca,Bi)(Mo,V)O4 solid solution ceramics for LTCC applications. J Eur Ceram Soc, 2019, 39(7): 2365-2373.

[4] [4] WU S P, JIANG C, MEI Y X, et al. Synthesis and microwave dielectric

[5] [5] KONIJINENDIJK W L. Luminescence of BaSnSi3O9:Ti4+ compared to BaZrSi3O9:Ti4+. Inorg Nuc Chem Lett, 1981, 17(5/6): 129-132.

[6] [6] DU K, YIN C Z, YANG J Q, et al. Crystal structure, far-infrared spectra, and microwave dielectric properties of bazirite-type BaZr(Si1-xGex)3O9 ceramics. Ceram Inter, 2022, 48(3): 3592-3599.

[7] [7] DU K, SONG X Q, LI J, et al. Optimised phase compositions and improved microwave dielectric properties based on calcium tin silicates. J Eur Ceram Soc, 2019, 39(2/3): 340-345.

[8] [8] LI J, TANG Y, ZHANG Z W, et al. Two novel garnet Sr3B2Ge3O12 (B= Yb, Ho) microwave dielectric ceramics with low permittivity and high Q. J Eur Ceram Soc, 2021, 41(2): 1317-1323.

[9] [9] TANG Y, ZHANG Z W, LI J, et al. A3Y2Ge3O12 (A=Ca, Mg): Two novel microwave dielectric ceramics with contrasting τf and Q×f. J Eur Ceram Soc, 2020, 40(12): 3989-3995.

[10] [10] CHENG K, TANG Y, XIANG H C, et al. Two novel low permittivity microwave dielectric ceramics Li2TiMO5 (M=Ge, Si) with abnormally positive τf. J Eur Ceram Soc, 2019, 39(8): 2680-2684.

[11] [11] DU K, YIN C Z, GUO Y B, et al. The relationship between crystal structure and modified microwave dielectric properties of Ca3SnSi2-xGexO9 ceramics. J Am Ceram Soc, 2022, 105(2): 1253-1264.

[12] [12] DU K, YIN C Z, GUO Y B, et al. Phase transition, infrared spectra, and microwave dielectric properties of temperature-stable CaSnSi1-xGexO5 ceramics. Ceram Inter, 2022, 47(17): 24781-24792.

[13] [13] RIETVELD H M. A profile refinement method for nuclear and magnetic structures. J Appl Crystallogr, 1969, 3(2): 65-71.

[14] [14] HAKKI B W, COLEMAN P D. A dielectric resonant method of measuring inductive capacitance in the millimeter range. IEEE Trans Microw Theory Tech, 1960, 8(4): 402-410.

[15] [15] SHANNON R D. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallogr A, 1976, 32(1): 751-767.

[16] [16] DU K, SONG X Q, ZOU Z Y, et al. Correlation between crystal structure and microwave dielectric properties of CaRE4Si3O13 (RE = La, Nd, Sm, and Er). J Mater Sci-Mater El, 2020, 31(4): 3274-3280.

[17] [17] SONG X Q, DU K, ZHANG X Z, et al. Crystal structure, phase composition and microwave dielectric properties of Ca3MSi2O9 ceramics. J Alloy Compd, 2018, 750: 996-1002.

[18] [18] BRESE N E, OKEEFFE M. Bond-valence parameters for solids. Acta Crystallogr B, 1991, 47(2): 192-197.

[19] [19] BROWN I D, SHANNON R D. Empirical bond-strength-bond-length curves for oxides. Acta Crystallogr A, 1973, 29(3): 266-282.

[20] [20] RAMA RAO S D, ROOPAS KIRAN S, MURTHY V R K. Correlation between structural characteristics and microwave dielectric properties of scheelite Ca1-xCdxMoO4 solid solution. J Am Ceram Soc, 2012, 95(11): 3532-3537.

[21] [21] OHSATO H, TSUNOOKA T, SUGIYAMA T, et al. Forsterite ceramics for millimeterwave dielectrics. J Electroceram, 2006(2-4), 17: 445-450.