期刊
ULTRASONICS SONOCHEMISTRY
卷 40, 期 -, 页码 583-586出版社
ELSEVIER
DOI: 10.1016/j.ultsonch.2017.07.050
关键词
Polyvinyl alcohol; Cobalt ferrite; Ultrasound irradiation; XRD; Co-precipitation method
资金
- University of Mohaghegh Ardabili
- Guilan University
Cobalt ferrite/Polyvinyl alcohol (PVA) nanocomposites were prepared with and without ultrasonic treatment by co-precipitation technique, characterized by X-ray diffraction (XRD), Vibrating sample magnetometer (VSM), Fourier transform infrared spectroscopy (FT-IR) and Transmission Electron Microscopy (TEM). The obtained results revealed that ultrasound irradiation induces strain in the structure and increases the magnetic anisotropy energy of the 7 nm magnetic nanoparticles (MNPs). The diffraction peak broadening and shift to lower angle due to the lattice strain were analyzed by means of Williamson-Hall (W-H) method. TEM images also show that ultrasound irradiated sample contain nano-crystallite cobalt ferrite which have completely dispersed and embedded in PVA matrix. These ultrasmall MNPs whit nonzero coercivity are promising for high density data storage 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