Synthesis, structure and magnetic properties of V4O9—A missing link in binary vanadium oxides

Yamazaki, Satoshi; Li, Chang; Ohoyama, Kenji; Nishi, Masakazu; Ichihara, Masaki; Ueda, Hiroaki; Ueda, Yutaka

doi:10.1016/j.jssc.2010.04.007

Cited by 38 publications

(47 citation statements)

References 31 publications

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“…In fact, strong and sharp diffraction peaks also indicate good crystallinity of the solvothermal product. Also, it is noted that the XRD pattern of the assynthesized material is similar to those presented in previous reports [45,47]. The average crystallite size of the as-synthesized materials was calculated using Scherrer's formula:…”

Section: Structural and Morphological Studiessupporting

confidence: 71%

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Solvothermal synthesis of V4O9 flake-like morphology and its photocatalytic application in the degradation of methylene blue

Chine

Sediri

Gharbi

2012

Materials Research Bulletin

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Section: Structural and Morphological Studiessupporting

confidence: 71%

“…According to Yamazaki et al [45] V 4 O 9 has an orthorhombic Cmcm structure. In this structure, there are three vanadium sites and seven oxygen sites.…”

Section: Structural and Morphological Studiesmentioning

confidence: 99%

Solvothermal synthesis of V4O9 flake-like morphology and its photocatalytic application in the degradation of methylene blue

Chine

Sediri

Gharbi

2012

Materials Research Bulletin

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“…1(a)]. It has been reported that V 4 O 9 is transformed into V 2 O 5 on annealing under an oxidative atmosphere, 26 suggesting that V 4 O 9 is a metastable phase.…”

Section: A Crystal Structures and Phase Diagrammentioning

confidence: 99%

Optimization of conditions for growth of vanadium dioxide thin films on silicon by pulsed-laser deposition

Shibuya

Sawa

2015

AIP Advances

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We systematically examined the effects of the substrate temperature (TS) and the oxygen pressure (PO2) on the structural and optical properties polycrystalline V O2 films grown directly on Si(100) substrates by pulsed-laser deposition. A rutile-type V O2 phase was formed at a TS ≥ 450 °C at PO2 values ranging from 5 to 20 mTorr, whereas other structures of vanadium oxides were stabilized at lower temperatures or higher oxygen pressures. The surface roughness of the V O2 films significantly increased at growth temperatures of 550 °C or more due to agglomeration of V O2 on the surface of the silicon substrate. An apparent change in the refractive index across the metal–insulator transition (MIT) temperature was observed in V O2 films grown at a TS of 450 °C or more. The difference in the refractive index at a wavelength of 1550 nm above and below the MIT temperature was influenced by both the TS and PO2, and was maximal for a V O2 film grown at 450 °C under 20 mTorr. Based on the results, we derived the PO2 versus 1/TS phase diagram for the films of vanadium oxides, which will provide a guide to optimizing the conditions for growth of V O2 films on silicon platforms.

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“…Kang et al These phases either share the space group Pnma 12 or V 4 O 9 belongs to Cmcm, 13 a minimal supergroup of Pnma. 10 The close structural relationship between c 0 -V 2 O 5 and the initiation of the Wadsley series supports the hypothesis that the a-V 2 O 5 !…”

mentioning

confidence: 99%

Additional Comment on “Metal-insulator transition without structural phase transition in V2O5 film” [Appl. Phys. Lett. 98, 131907 (2011)]

Aita

2014

Applied Physics Letters

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Synthesis, structure and magnetic properties of V4O9—A missing link in binary vanadium oxides

Cited by 38 publications

References 31 publications

Solvothermal synthesis of V4O9 flake-like morphology and its photocatalytic application in the degradation of methylene blue

Solvothermal synthesis of V4O9 flake-like morphology and its photocatalytic application in the degradation of methylene blue

Optimization of conditions for growth of vanadium dioxide thin films on silicon by pulsed-laser deposition

Additional Comment on “Metal-insulator transition without structural phase transition in V2O5 film” [Appl. Phys. Lett. 98, 131907 (2011)]

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