Stabilization of cubic phase in scandium-doped zirconia nanocrystals synthesized with sol-gel method

Alexander Sobolev; Albina Musin; Gene Whyman; Konstantin Borodianskiy; Olga Krichevski; Alexander Kalashnikov; Michael Zinigrad

doi:10.1111/jace.16232

Stabilization of cubic phase in scandium-doped zirconia nanocrystals synthesized with sol-gel method

Alexander Sobolev, Albina Musin, Gene Whyman, Konstantin Borodianskiy, Olga Krichevski, Alexander Kalashnikov, Michael Zinigrad

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19 Scopus citations

Abstract

A new room-temperature synthesis of nanocrystals of scandium-doped zirconium oxide by sol-gel method is reported. The structure of the obtained product is checked with standard structural analysis methods. The crystal phase of ZrO ₂ -Sc ₂ O ₃ nanocrystals changes from monoclinic to tetragonal and cubic with the increase in scandium concentration. The importance of the cubic phase, which appears at 10 mol% and refines at 16 mol% of Sc ₂ O ₃ concentration, is emphasized. The UV-Vis absorption spectra of the product are measured, and its bandgap is evaluated from the fundamental absorption edge. The value of the bandgap was calculated as 5.65 eV for the cubic phase.

Original language	English
Pages (from-to)	3236-3243
Number of pages	8
Journal	Journal of the American Ceramic Society
Volume	102
Issue number	6
DOIs	https://doi.org/10.1111/jace.16232
State	Published - Jun 2019

Keywords

UV-Vis spectra
scandium-doped zirconia nanocrystals
sol-gel synthesis
stabilization of cubic phase

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10.1111/jace.16232

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title = "Stabilization of cubic phase in scandium-doped zirconia nanocrystals synthesized with sol-gel method",

abstract = " A new room-temperature synthesis of nanocrystals of scandium-doped zirconium oxide by sol-gel method is reported. The structure of the obtained product is checked with standard structural analysis methods. The crystal phase of ZrO 2 -Sc 2 O 3 nanocrystals changes from monoclinic to tetragonal and cubic with the increase in scandium concentration. The importance of the cubic phase, which appears at 10 mol% and refines at 16 mol% of Sc 2 O 3 concentration, is emphasized. The UV-Vis absorption spectra of the product are measured, and its bandgap is evaluated from the fundamental absorption edge. The value of the bandgap was calculated as 5.65 eV for the cubic phase.",

keywords = "UV-Vis spectra, scandium-doped zirconia nanocrystals, sol-gel synthesis, stabilization of cubic phase",

author = "Alexander Sobolev and Albina Musin and Gene Whyman and Konstantin Borodianskiy and Olga Krichevski and Alexander Kalashnikov and Michael Zinigrad",

note = "Publisher Copyright: {\textcopyright} 2018 The American Ceramic Society",

year = "2019",

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T1 - Stabilization of cubic phase in scandium-doped zirconia nanocrystals synthesized with sol-gel method

AU - Sobolev, Alexander

AU - Musin, Albina

AU - Whyman, Gene

AU - Borodianskiy, Konstantin

AU - Krichevski, Olga

AU - Kalashnikov, Alexander

AU - Zinigrad, Michael

PY - 2019/6

Y1 - 2019/6

N2 - A new room-temperature synthesis of nanocrystals of scandium-doped zirconium oxide by sol-gel method is reported. The structure of the obtained product is checked with standard structural analysis methods. The crystal phase of ZrO 2 -Sc 2 O 3 nanocrystals changes from monoclinic to tetragonal and cubic with the increase in scandium concentration. The importance of the cubic phase, which appears at 10 mol% and refines at 16 mol% of Sc 2 O 3 concentration, is emphasized. The UV-Vis absorption spectra of the product are measured, and its bandgap is evaluated from the fundamental absorption edge. The value of the bandgap was calculated as 5.65 eV for the cubic phase.

AB - A new room-temperature synthesis of nanocrystals of scandium-doped zirconium oxide by sol-gel method is reported. The structure of the obtained product is checked with standard structural analysis methods. The crystal phase of ZrO 2 -Sc 2 O 3 nanocrystals changes from monoclinic to tetragonal and cubic with the increase in scandium concentration. The importance of the cubic phase, which appears at 10 mol% and refines at 16 mol% of Sc 2 O 3 concentration, is emphasized. The UV-Vis absorption spectra of the product are measured, and its bandgap is evaluated from the fundamental absorption edge. The value of the bandgap was calculated as 5.65 eV for the cubic phase.

KW - UV-Vis spectra

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KW - sol-gel synthesis

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Stabilization of cubic phase in scandium-doped zirconia nanocrystals synthesized with sol-gel method

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