Magnetic phase transition in V2O3 nanocrystals

V. A. Blagojevic; J. P. Carlo; L. E. Brus; M. L. Steigerwald; Y. J. Uemura; S. J.L. Billinge; W. Zhou; P. W. Stephens; A. A. Aczel; G. M. Luke

doi:10.1103/PhysRevB.82.094453

Magnetic phase transition in V₂O₃ nanocrystals

V. A. Blagojevic, J. P. Carlo, L. E. Brus, M. L. Steigerwald, Y. J. Uemura, S. J.L. Billinge, W. Zhou, P. W. Stephens, A. A. Aczel, G. M. Luke

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

V₂O₃ nanocrystals can be synthesized through hydrothermal reduction in VO (OH)₂ using hydrazine as a reducing agent. Addition of different ligands to the reaction produces nanoparticles, nanorods, and nanoplatelets of different sizes. Small nanoparticles synthesized in this manner show suppression of the magnetic phase transition to lower temperatures. Using muon spin relaxation spectroscopy and synchrotron x-ray diffraction, we have determined that the volume fraction of the high-temperature phase, characterized by a rhombohedral structure and paramagnetism, gradually declines with decreasing temperature, in contrast to the sharp transition observed in bulk V₂O₃.

Original language	English
Article number	094453
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.82.094453
State	Published - Sep 30 2010
Externally published	Yes

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title = "Magnetic phase transition in V2O3 nanocrystals",

abstract = "V2O3 nanocrystals can be synthesized through hydrothermal reduction in VO (OH)2 using hydrazine as a reducing agent. Addition of different ligands to the reaction produces nanoparticles, nanorods, and nanoplatelets of different sizes. Small nanoparticles synthesized in this manner show suppression of the magnetic phase transition to lower temperatures. Using muon spin relaxation spectroscopy and synchrotron x-ray diffraction, we have determined that the volume fraction of the high-temperature phase, characterized by a rhombohedral structure and paramagnetism, gradually declines with decreasing temperature, in contrast to the sharp transition observed in bulk V2O3.",

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doi = "10.1103/PhysRevB.82.094453",

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AU - Blagojevic, V. A.

AU - Carlo, J. P.

AU - Brus, L. E.

AU - Steigerwald, M. L.

AU - Uemura, Y. J.

AU - Billinge, S. J.L.

AU - Zhou, W.

AU - Stephens, P. W.

AU - Aczel, A. A.

AU - Luke, G. M.

PY - 2010/9/30

Y1 - 2010/9/30

N2 - V2O3 nanocrystals can be synthesized through hydrothermal reduction in VO (OH)2 using hydrazine as a reducing agent. Addition of different ligands to the reaction produces nanoparticles, nanorods, and nanoplatelets of different sizes. Small nanoparticles synthesized in this manner show suppression of the magnetic phase transition to lower temperatures. Using muon spin relaxation spectroscopy and synchrotron x-ray diffraction, we have determined that the volume fraction of the high-temperature phase, characterized by a rhombohedral structure and paramagnetism, gradually declines with decreasing temperature, in contrast to the sharp transition observed in bulk V2O3.

AB - V2O3 nanocrystals can be synthesized through hydrothermal reduction in VO (OH)2 using hydrazine as a reducing agent. Addition of different ligands to the reaction produces nanoparticles, nanorods, and nanoplatelets of different sizes. Small nanoparticles synthesized in this manner show suppression of the magnetic phase transition to lower temperatures. Using muon spin relaxation spectroscopy and synchrotron x-ray diffraction, we have determined that the volume fraction of the high-temperature phase, characterized by a rhombohedral structure and paramagnetism, gradually declines with decreasing temperature, in contrast to the sharp transition observed in bulk V2O3.

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DO - 10.1103/PhysRevB.82.094453

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

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Magnetic phase transition in V₂O₃ nanocrystals

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