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- W4213005730 abstract "${mathrm{V}}_{2}{mathrm{O}}_{3}$ undergoes a first-order metal-insulator transition accompanied by a magnetostructural transition at ${T}_{mathrm{MI}}ensuremath{sim}160phantom{rule{0.16em}{0ex}}mathrm{K}$. Here, we report a comprehensive study on gallium-doped (4%) polycrystalline ${mathrm{V}}_{2}{mathrm{O}}_{3}$ by employing various experimental techniques such as synchrotron x-ray diffraction, thermal expansion, Raman spectroscopy, DC magnetization, time-of-flight neutron diffraction, heat capacity, and electrical transport. Our studies show several interesting features related to the structural, magnetic, and electronic phase transitions in Ga-doped sample. Intriguingly, the nonmagnetic doping in ${mathrm{V}}_{2}{mathrm{O}}_{3}$ enhances the N'eel temperature by 25 K $({T}_{mathrm{N}}=185phantom{rule{0.16em}{0ex}}mathrm{K})$. Further, we find the decoupling of the structural transition from the magnetic and insulator-insulator transition $({T}_{mathrm{II}}ensuremath{sim}185phantom{rule{0.16em}{0ex}}mathrm{K})$. Raman spectroscopic studies reveal that the structural phase transition begins at ${T}^{*} (=195phantom{rule{0.16em}{0ex}}mathrm{K})$, which is slightly above ${T}_{mathrm{N}}$ or ${T}_{mathrm{II}}$, as evidenced from the softening of ${E}_{g}$ mode and the splitting of ${A}_{1g}$ mode. Additionally, the rhombohedral and monoclinic phases coexist in a broad temperature range, and a complete phase transformation to monoclinic phase occurs at 127 K." @default.
- W4213005730 created "2022-02-24" @default.
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- W4213005730 date "2022-02-14" @default.
- W4213005730 modified "2023-10-13" @default.
- W4213005730 title "Effects of Ga doping on the phase transitions of <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi mathvariant=normal>V</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant=normal>O</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>" @default.
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- W4213005730 doi "https://doi.org/10.1103/physrevb.105.064103" @default.
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