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Synergistic effects of ZrO2 and La2O3 on the phase stability and optical–electronic properties of Y2O3.

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Title: Synergistic effects of ZrO2 and La2O3 on the phase stability and optical–electronic properties of Y2O3.
Authors: Tripathi, Harshit1 (AUTHOR), Sharma, Nikhil1 (AUTHOR), Sharma, Jagmohan Datt1 (AUTHOR) jdsharma@pec.edu.in
Source: International Journal of Applied Ceramic Technology. May/Jun2025, Vol. 22 Issue 3, p1-15. 15p.
Subjects: Transparent ceramics, Yttrium oxides, Lanthanum oxide, Phase transitions, Band gaps
Abstract: Yttrium oxide (Y2O3)$({{{\mathrm{Y}}}_2{{\mathrm{O}}}_3})$ has the potential to be used as a host material for creating polycrystalline transparent ceramics (PTCs). This paper presents an experimental study on opto‐electrical properties of Y2O3${{\mathrm{Y}}}_2{{\mathrm{O}}}_3$ using zirconium oxide (ZrO2)$({{\mathrm{ZrO}}_2})$ and lanthanum oxide (La2O3)$({\mathrm{La}}_2{{\mathrm{O}}}_3)$ as sintering aids via the co‐precipitation technique. The sintering aids improve the properties, sintering process, and lower the sintering temperature. Five different compositions of Y2O3(((Y1−xZr0.02Lax)2O3),wherex=0,3,6,and9at.%)${{\mathrm{Y}}}_2{{\mathrm{O}}}_3\ ({({{({{{\mathrm{Y}}}_{1 - x}{\mathrm{Zr}}_{0.02}{\mathrm{La}}_x})}}_2{{\mathrm{O}}}_3}),{\mathrm{\ where\ }}x = 0,\ 3,\ 6,{\mathrm{\ and\ }}9{\mathrm{\ at}}.{\mathrm{\% }})$ were synthesized and they were then used to analyze for their structural, morphological, physio‐chemical, and electrical characteristics. For the system studied, the addition of ZrO2${\mathrm{ZrO}}_2$ and La2O3${\mathrm{La}}_2{{\mathrm{O}}}_3$ does not change the phase of pure Y2O3${{\mathrm{Y}}}_2{{\mathrm{O}}}_3$, but an increase in the crystal and grain size from 31.2$31.2$ to 42.5nm$42.5{\mathrm{\ nm}}$ and 10.2 µm to 16.4 µm was noticed. The thermal characterization over thermogravimetric analysis/differential thermal calorimetry (TGA/DSC) determines the temperature at which pure Y2O3${{\mathrm{Y}}}_2{{\mathrm{O}}}_3$ undergoes a phase transition, specifically over 700°C. A reduction in the band gap due to strain induced by the dopant resulted in a decrease in energy from 5.54$5.54$ to 4.8eV$4.8{\mathrm{\ eV}}$. The dielectric constant of Y2O3${{\mathrm{Y}}}_2{{\mathrm{O}}}_3$ doped with 9at.%La$9{\mathrm{\ at}}.{\mathrm{\% \ La}}$ exhibits a significant increase of ∼50%${\sim}50\%$. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Applied Ceramic Technology 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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  Label: Title
  Group: Ti
  Data: Synergistic effects of ZrO<subscript>2</subscript> and La<subscript>2</subscript>O<subscript>3</subscript> on the phase stability and optical–electronic properties of Y<subscript>2</subscript>O<subscript>3</subscript>.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Tripathi%2C+Harshit%22">Tripathi, Harshit</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sharma%2C+Nikhil%22">Sharma, Nikhil</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sharma%2C+Jagmohan+Datt%22">Sharma, Jagmohan Datt</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jdsharma@pec.edu.in</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Applied+Ceramic+Technology%22">International Journal of Applied Ceramic Technology</searchLink>. May/Jun2025, Vol. 22 Issue 3, p1-15. 15p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Transparent+ceramics%22">Transparent ceramics</searchLink><br /><searchLink fieldCode="DE" term="%22Yttrium+oxides%22">Yttrium oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Lanthanum+oxide%22">Lanthanum oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+transitions%22">Phase transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Band+gaps%22">Band gaps</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Yttrium oxide (Y2O3)$({{{\mathrm{Y}}}_2{{\mathrm{O}}}_3})$ has the potential to be used as a host material for creating polycrystalline transparent ceramics (PTCs). This paper presents an experimental study on opto‐electrical properties of Y2O3${{\mathrm{Y}}}_2{{\mathrm{O}}}_3$ using zirconium oxide (ZrO2)$({{\mathrm{ZrO}}_2})$ and lanthanum oxide (La2O3)$({\mathrm{La}}_2{{\mathrm{O}}}_3)$ as sintering aids via the co‐precipitation technique. The sintering aids improve the properties, sintering process, and lower the sintering temperature. Five different compositions of Y2O3(((Y1−xZr0.02Lax)2O3),wherex=0,3,6,and9at.%)${{\mathrm{Y}}}_2{{\mathrm{O}}}_3\ ({({{({{{\mathrm{Y}}}_{1 - x}{\mathrm{Zr}}_{0.02}{\mathrm{La}}_x})}}_2{{\mathrm{O}}}_3}),{\mathrm{\ where\ }}x = 0,\ 3,\ 6,{\mathrm{\ and\ }}9{\mathrm{\ at}}.{\mathrm{\% }})$ were synthesized and they were then used to analyze for their structural, morphological, physio‐chemical, and electrical characteristics. For the system studied, the addition of ZrO2${\mathrm{ZrO}}_2$ and La2O3${\mathrm{La}}_2{{\mathrm{O}}}_3$ does not change the phase of pure Y2O3${{\mathrm{Y}}}_2{{\mathrm{O}}}_3$, but an increase in the crystal and grain size from 31.2$31.2$ to 42.5nm$42.5{\mathrm{\ nm}}$ and 10.2 µm to 16.4 µm was noticed. The thermal characterization over thermogravimetric analysis/differential thermal calorimetry (TGA/DSC) determines the temperature at which pure Y2O3${{\mathrm{Y}}}_2{{\mathrm{O}}}_3$ undergoes a phase transition, specifically over 700°C. A reduction in the band gap due to strain induced by the dopant resulted in a decrease in energy from 5.54$5.54$ to 4.8eV$4.8{\mathrm{\ eV}}$. The dielectric constant of Y2O3${{\mathrm{Y}}}_2{{\mathrm{O}}}_3$ doped with 9at.%La$9{\mathrm{\ at}}.{\mathrm{\% \ La}}$ exhibits a significant increase of ∼50%${\sim}50\%$. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Applied Ceramic Technology 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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    Identifiers:
      – Type: doi
        Value: 10.1111/ijac.14909
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 1
    Subjects:
      – SubjectFull: Transparent ceramics
        Type: general
      – SubjectFull: Yttrium oxides
        Type: general
      – SubjectFull: Lanthanum oxide
        Type: general
      – SubjectFull: Phase transitions
        Type: general
      – SubjectFull: Band gaps
        Type: general
    Titles:
      – TitleFull: Synergistic effects of ZrO2 and La2O3 on the phase stability and optical–electronic properties of Y2O3.
        Type: main
  BibRelationships:
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      – PersonEntity:
          Name:
            NameFull: Tripathi, Harshit
      – PersonEntity:
          Name:
            NameFull: Sharma, Nikhil
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            NameFull: Sharma, Jagmohan Datt
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          Dates:
            – D: 01
              M: 05
              Text: May/Jun2025
              Type: published
              Y: 2025
          Identifiers:
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              Value: 1546542X
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              Value: 22
            – Type: issue
              Value: 3
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            – TitleFull: International Journal of Applied Ceramic Technology
              Type: main
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