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Effect of binary ion substitution on the crystal structure and microwave dielectric properties of MgTa2O6 ceramics.

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Title: Effect of binary ion substitution on the crystal structure and microwave dielectric properties of MgTa2O6 ceramics.
Authors: Gao, Yang1,2 (AUTHOR), Chen, Junjie1,3 (AUTHOR), Fang, Weishuang1 (AUTHOR), Peng, Haiyi1 (AUTHOR), Xie, Tianyi1 (AUTHOR), Ren, Haishen1 (AUTHOR), Yao, Xiaogang1,2 (AUTHOR) yaoxiaogang@mail.sic.ac.cn, Lin, Huixing1,2 (AUTHOR) huixinglin@mail.sic.ac.cn
Source: Journal of the American Ceramic Society. Feb2025, Vol. 108 Issue 2, p1-12. 12p.
Subjects: Permittivity, Complex ions, Large deviations (Mathematics), Dielectric properties, Crystal structure, Ceramics, Microwaves
Abstract: Mg1/3A11/3A21/3Ta2O6 ceramics (where A1 and A2 represent Co, Ni, or Zn) were prepared using the solid‐phase reaction route. The results of X‐ray diffraction and Raman tests showed that (Co1/2Ni1/2)2+, (Co1/ 2Zn1/2)2+, and (Ni1/2Zn1/2)2+ ions replaced Mg2+ ions in the lattice of MgTa2O6, resulting in the formation of a pure tri‐rutile structure. All three complex ions could significantly reduce the sintering temperature of the ceramics (by 150°C–200°C) and could broaden the sintering window. The large deviation (48.8%–69.2%) between the porosity corrected relative permittivity εr‐corr. and the theoretical relative permittivity εr‐theo. might be due to the overestimation of the ionic polarizability of Ta5+ by Shannon. (Co1/2Ni1/2)2+ has the most significant effect of increasing the bond energy of ceramic A–O bonds, reducing the τf value from 51 to 36 ppm/°C. In addition, the mechanisms affecting their dielectric properties are discussed based on bond ionicity (fi), full width at half maximum (FWHM) of Raman peak, and bond energy (E). Mg1/3Co1/3Ni1/3Ta2O6 ceramic sintered at 1350°C have the most excellent microwave dielectric properties: εr = 26.8, Q × f = 86,000 GHz, and τf = 36 ppm/°C. [ABSTRACT FROM AUTHOR]
Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Effect of binary ion substitution on the crystal structure and microwave dielectric properties of MgTa<subscript>2</subscript>O<subscript>6</subscript> ceramics.
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  Data: <searchLink fieldCode="AR" term="%22Gao%2C+Yang%22">Gao, Yang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Junjie%22">Chen, Junjie</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fang%2C+Weishuang%22">Fang, Weishuang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Peng%2C+Haiyi%22">Peng, Haiyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xie%2C+Tianyi%22">Xie, Tianyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ren%2C+Haishen%22">Ren, Haishen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yao%2C+Xiaogang%22">Yao, Xiaogang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> yaoxiaogang@mail.sic.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Lin%2C+Huixing%22">Lin, Huixing</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> huixinglin@mail.sic.ac.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+the+American+Ceramic+Society%22">Journal of the American Ceramic Society</searchLink>. Feb2025, Vol. 108 Issue 2, p1-12. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Permittivity%22">Permittivity</searchLink><br /><searchLink fieldCode="DE" term="%22Complex+ions%22">Complex ions</searchLink><br /><searchLink fieldCode="DE" term="%22Large+deviations+%28Mathematics%29%22">Large deviations (Mathematics)</searchLink><br /><searchLink fieldCode="DE" term="%22Dielectric+properties%22">Dielectric properties</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+structure%22">Crystal structure</searchLink><br /><searchLink fieldCode="DE" term="%22Ceramics%22">Ceramics</searchLink><br /><searchLink fieldCode="DE" term="%22Microwaves%22">Microwaves</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Mg1/3A11/3A21/3Ta2O6 ceramics (where A1 and A2 represent Co, Ni, or Zn) were prepared using the solid‐phase reaction route. The results of X‐ray diffraction and Raman tests showed that (Co1/2Ni1/2)2+, (Co1/ 2Zn1/2)2+, and (Ni1/2Zn1/2)2+ ions replaced Mg2+ ions in the lattice of MgTa2O6, resulting in the formation of a pure tri‐rutile structure. All three complex ions could significantly reduce the sintering temperature of the ceramics (by 150°C–200°C) and could broaden the sintering window. The large deviation (48.8%–69.2%) between the porosity corrected relative permittivity εr‐corr. and the theoretical relative permittivity εr‐theo. might be due to the overestimation of the ionic polarizability of Ta5+ by Shannon. (Co1/2Ni1/2)2+ has the most significant effect of increasing the bond energy of ceramic A–O bonds, reducing the τf value from 51 to 36 ppm/°C. In addition, the mechanisms affecting their dielectric properties are discussed based on bond ionicity (fi), full width at half maximum (FWHM) of Raman peak, and bond energy (E). Mg1/3Co1/3Ni1/3Ta2O6 ceramic sintered at 1350°C have the most excellent microwave dielectric properties: εr = 26.8, Q × f = 86,000 GHz, and τf = 36 ppm/°C. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/jace.20232
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      – Code: eng
        Text: English
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        PageCount: 12
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    Subjects:
      – SubjectFull: Permittivity
        Type: general
      – SubjectFull: Complex ions
        Type: general
      – SubjectFull: Large deviations (Mathematics)
        Type: general
      – SubjectFull: Dielectric properties
        Type: general
      – SubjectFull: Crystal structure
        Type: general
      – SubjectFull: Ceramics
        Type: general
      – SubjectFull: Microwaves
        Type: general
    Titles:
      – TitleFull: Effect of binary ion substitution on the crystal structure and microwave dielectric properties of MgTa2O6 ceramics.
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            NameFull: Gao, Yang
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              M: 02
              Text: Feb2025
              Type: published
              Y: 2025
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