http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Characterization and magnetic properties of polyethylene glycol modified NiZn ferrite thin films
Ke Sun,Zhongwen Lan,Zhong Yu,Xiaoliang Nie 한국물리학회 2011 Current Applied Physics Vol.11 No.3
Polyethylene glycol (PEG) modified Ni_0.5Zn_0.5Fe_2.0O_4.0 ferrite thin films were deposited on Si (100)substrate by a sol―gel method. The crystal structure, surface morphology and magnetic properties of PEG-modified NiZn ferrite thin films (NZFs) were investigated by using the X-ray diffractometer (XRD),atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR) and vibrating sample magnetometer (VSM). The FTIR spectrums showed that PEG molecules were on the surface of asprepared particles, which effectively improved their dispersibility. The crystallization of NZFs improved and crystallite size increased with increasing PEG concentration. Optimal PEG concentration could improve the surface morphology and reduce the roughness. Magnetic properties measurement indicated that compared with the sample without PEG, PEG-modified NZFs showed excellent magnetic properties with higher saturation magnetization and lower coercive force. Finally, PEG-modified NZFs showed a high saturation magnetization 312 emu/cm3 and low coercive force 90 Oe when PEG concentration was 40 g/L.