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Chessboard‐like nanostructure evolution in Li0.48Nd0.5TiO2.99 perovskites and its effects on electrochemical properties.

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Title: Chessboard‐like nanostructure evolution in Li0.48Nd0.5TiO2.99 perovskites and its effects on electrochemical properties.
Authors: Pal, Avnish Singh1 (AUTHOR), Godha, Akshat2 (AUTHOR), Sharma, Ankur3 (AUTHOR), Pimple, Sujit Yuvraj1 (AUTHOR), Singh, Ankit1 (AUTHOR), Billare, Pavithra4 (AUTHOR), Makineni, Surendra Kumar2 (AUTHOR), Knowles, Kevin M.5 (AUTHOR), Basu, Joysurya1 (AUTHOR) jbasu.met@iitbhu.ac.in
Source: Journal of the American Ceramic Society. Jul2025, Vol. 108 Issue 7, p1-18. 18p.
Subjects: Atom-probe tomography, Polymorphic transformations, Transmission electron microscopy, Perovskite, Phase separation
Abstract: Lithium neodymium titanate ABO3 perovskites have been synthesized by a solid‐state synthesis route. All the samples sintered at 1250°C for 24 h followed by slow cooling at ∼ 10°C h−1 undergo an ordering−induced polymorphic transformation where the amount of ordering increases as the A site cation vacancy content increases. Li0.48Nd0.5TiO2.99 sintered at 1250°C for 24 h and then quenched to room temperature forms a Pnma orthorhombic phase. This phase is also observed after 100 charging and discharging cycles of the Li0.48Nd0.5TiO2.99 sample sintered at 1250°C and then slow‐cooled. A chessboard‐like nanostructure with a ∼7 nm × 7 nm domain size is observed in the sintered and slow‐cooled Li0.48Nd0.5TiO2.99, forming along {001} or {010} interfaces of the pseudo‐tetragonal crystal structure. In the slow‐cooled sample, independent channels of Li‐ions, Nd‐ions, and mixed ions are observed in the [100] projection of this chessboard‐like structure. The atom probe tomographic reconstruction of this phase clearly indicates phase separation, with a periodic variation of the Li, Nd, and Ti ions. Significantly, the electrochemical properties of this Li0.48Nd0.5TiO2.99 material are superior to those of sintered and quenched Li0.48Nd0.5TiO2.99 and those of sintered and slow‐cooled Li0.36Nd0.5TiO2.93, neither of which exhibit a chessboard‐like nanostructure. [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: Chessboard‐like nanostructure evolution in Li<subscript>0.48</subscript>Nd<subscript>0.5</subscript>TiO<subscript>2.99</subscript> perovskites and its effects on electrochemical properties.
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  Data: <searchLink fieldCode="AR" term="%22Pal%2C+Avnish+Singh%22">Pal, Avnish Singh</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Godha%2C+Akshat%22">Godha, Akshat</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sharma%2C+Ankur%22">Sharma, Ankur</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pimple%2C+Sujit+Yuvraj%22">Pimple, Sujit Yuvraj</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Singh%2C+Ankit%22">Singh, Ankit</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Billare%2C+Pavithra%22">Billare, Pavithra</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Makineni%2C+Surendra+Kumar%22">Makineni, Surendra Kumar</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Knowles%2C+Kevin+M%2E%22">Knowles, Kevin M.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Basu%2C+Joysurya%22">Basu, Joysurya</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jbasu.met@iitbhu.ac.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+the+American+Ceramic+Society%22">Journal of the American Ceramic Society</searchLink>. Jul2025, Vol. 108 Issue 7, p1-18. 18p.
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– Name: Abstract
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  Data: Lithium neodymium titanate ABO3 perovskites have been synthesized by a solid‐state synthesis route. All the samples sintered at 1250°C for 24 h followed by slow cooling at ∼ 10°C h−1 undergo an ordering−induced polymorphic transformation where the amount of ordering increases as the A site cation vacancy content increases. Li0.48Nd0.5TiO2.99 sintered at 1250°C for 24 h and then quenched to room temperature forms a Pnma orthorhombic phase. This phase is also observed after 100 charging and discharging cycles of the Li0.48Nd0.5TiO2.99 sample sintered at 1250°C and then slow‐cooled. A chessboard‐like nanostructure with a ∼7 nm × 7 nm domain size is observed in the sintered and slow‐cooled Li0.48Nd0.5TiO2.99, forming along {001} or {010} interfaces of the pseudo‐tetragonal crystal structure. In the slow‐cooled sample, independent channels of Li‐ions, Nd‐ions, and mixed ions are observed in the [100] projection of this chessboard‐like structure. The atom probe tomographic reconstruction of this phase clearly indicates phase separation, with a periodic variation of the Li, Nd, and Ti ions. Significantly, the electrochemical properties of this Li0.48Nd0.5TiO2.99 material are superior to those of sintered and quenched Li0.48Nd0.5TiO2.99 and those of sintered and slow‐cooled Li0.36Nd0.5TiO2.93, neither of which exhibit a chessboard‐like nanostructure. [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.20488
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      – Code: eng
        Text: English
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        PageCount: 18
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    Subjects:
      – SubjectFull: Atom-probe tomography
        Type: general
      – SubjectFull: Polymorphic transformations
        Type: general
      – SubjectFull: Transmission electron microscopy
        Type: general
      – SubjectFull: Perovskite
        Type: general
      – SubjectFull: Phase separation
        Type: general
    Titles:
      – TitleFull: Chessboard‐like nanostructure evolution in Li0.48Nd0.5TiO2.99 perovskites and its effects on electrochemical properties.
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            – D: 01
              M: 07
              Text: Jul2025
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              Y: 2025
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