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Journal of Inorganic Materials, Volume. 40, Issue 6, 647(2025)

Crystal Structure and Terahertz Dielectric Properties of (Ti0.5W0.5)5+ Doped MgNb2O6 Ceramics

Zipeng HUANG1,2,3, Wenxiao JIA1,2,3, and Lingxia LI1,2,3、*
Author Affiliations
  • 11. School of Microelectronics, Tianjin University, Tianjin 300072, China
  • 22. Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China
  • 33. Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology, Tianjin University, Tianjin 300072, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
    Equations (5)
    References (33)
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    Figures & Tables(10)
    XRD analyses of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics
    1. XRD analyses of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics

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    (a) XRD refinement result and (b) crystal structure of MgNb2O6 ceramic
    2. (a) XRD refinement result and (b) crystal structure of MgNb2O6 ceramic

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    Surface morphologies of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics sintered at 1340 ℃
    3. Surface morphologies of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics sintered at 1340 ℃

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    Chemical bond characteristics of Mg-O and Nb-O bonds in MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics
    4. Chemical bond characteristics of Mg-O and Nb-O bonds in MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics

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    (a) Terahertz dielectric constants and (b) densities of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics
    5. (a) Terahertz dielectric constants and (b) densities of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics

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    (a) Terahertz dielectric loss and (b) absorption coefficient of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics
    6. (a) Terahertz dielectric loss and (b) absorption coefficient of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics

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    • Table 1. Reliability factor of XRD refinement results of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics

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      Table 1. Reliability factor of XRD refinement results of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics

      Parameterx=0 x=0.01 x=0.02 x=0.03
      Rwp/%10.3613.567.956.32
      Rp/%6.528.565.564.33

    • Table 2. Bond lengths (Å) in MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics obtained from XRD refinement

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      Table 2. Bond lengths (Å) in MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics obtained from XRD refinement

      Bondx=0 x=0.01 x=0.02 x=0.03
      Mg–O1$\times $22.00121.90332.06322.0821
      Mg–O2(1)$\times $21.98922.04232.00322.0262
      Mg–O2(2)$\times $22.01222.43432.07922.0631
      Nb–O1(1)$\times $12.02232.11232.06422.0322
      Nb–O1(2)$\times $12.10722.16122.00922.0082
      Nb–O2$\times $11.96211.83131.83411.8441
      Nb–O3(1)$\times $12.14611.99622.11212.1431
      Nb–O3(2)$\times $12.05422.13622.13622.1191
      Nb–O3(3)$\times $12.06622.17232.01522.0002

    • Table 3. B position chemical bond valences (Sij(B-O)) and global instability indexes (GII) of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics

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      Table 3. B position chemical bond valences (Sij(B-O)) and global instability indexes (GII) of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics

      Parameterx=0 x=0.01 x=0.02 x=0.03
      Sij(B-O)4.06574.16124.53834.5777
      GII0.78960.60690.39140.3458

    • Table 4. Atomic packing densities of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics

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      Table 4. Atomic packing densities of MgNb2-x(Ti0.5W0.5)xO6 (x=0-0.03) ceramics

      Parameterx=0 x=0.01 x=0.02 x=0.03
      Atomic packing density/%71.2571.3371.4671.50
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    Zipeng HUANG, Wenxiao JIA, Lingxia LI. Crystal Structure and Terahertz Dielectric Properties of (Ti0.5W0.5)5+ Doped MgNb2O6 Ceramics [J]. Journal of Inorganic Materials, 2025, 40(6): 647

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    Paper Information

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    Received: Dec. 10, 2024

    Accepted: --

    Published Online: Sep. 2, 2025

    The Author Email: Lingxia LI (tjulingxiali_666@163.com)

    DOI:10.15541/jim20240512

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology