Magnetic phase transition in V2O3 nanocrystals

Article

关键词: VANADIUM SESQUIOXIDE;    CRYSTAL-STRUCTURE;    SINGLE CRYSTALS;    METALLIC V2O3;    NANOPOWDER;    PURE;   

DOI  :  10.1103/PhysRevB.82.094453

来源: SCIE

【 摘 要 】

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.

【 授权许可】

Free