期刊
PHYSICA B-CONDENSED MATTER
卷 670, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.physb.2023.415346
关键词
Nanocrystalline materials; Dilute magnetic semiconductors; Optical properties; Williamson-Hall method; Elastic properties
Undoped and Mn-doped V2O5 nanocrystals were synthesized and characterized. Mn doping increased the crystallite size and decreased lattice strain, stress, and energy density. The vibrational properties were affected by Mn ions and photoluminescence indicated the presence of defects. Undoped nanocrystals showed weak ferromagnetic behavior at room temperature, which was significantly enhanced after Mn doping. Mn-doped V2O5 nanocrystals are promising for spintronics applications.
Undoped and Mn-doped (5% and 10%) V2O5 nanocrystals have been synthesized by the chemical coprecipitation process followed by heating of the chemically obtained materials at 600 degrees C. X-ray diffractometry, transmission electron microscopy, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, micro-Raman spectroscopy, UV-visible absorption spectroscopy, photoluminescence spectroscopy, vibrating sample magnetometry and electron spin resonance spectroscopy have been used for material characterization. Williamson-Hall analyses revealed higher crystallite size but lower lattice strain, lattice stress and energy density of the Mn-doped V2O5 nanocrystals as compared to undoped ones. The vibrational properties were found to be influenced by the presence of Mn ions while photoluminescence results suggested the presence of vanadium vacancy and vanadium interstitial defects in the nanocrystals. The undoped V2O5 nanocrystals exhibited weak room-temperature ferromagnetic behaviour that got significantly stronger after Mn doping. The dilute magnetic semiconductor Mn-doped V2O5 nanocrystals are promising materials for applications in spintronics devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据