A.C. and D.C. conductivity of NiZn ferrite nanoparticles in wet and dry conditions
作者： S.A. Saafan , T.M. Meaz , E.H. El-Ghazzawy , M.K. El Nimr , M.M. Ayad
DOI: 10.1016/J.JMMM.2010.02.039
关键词:
摘要: Abstract Promising future applications of ferrite nanoparticles in medicine, drug delivery, sensors and ferrofluids are expected to be wet or humid environments. Therefore nanostructured powders ferrites having the chemical compositions. Ni x Zn (1− ) Fe 2 O 4 with ( =0.0, 0.25, 0.5, 0.75, 1) were pressed immediately after preparation – by co-precipitation method without any drying simulate a environment. The characterized X-ray diffraction analysis (XRD) sure formation nanoscale. infrared (IR) spectroscopy samples ensures existence water as well characteristic absorption bands ferrites. ac dc conductivity had been investigated (the as-prepared samples). Then, dried at 200 °C for about 12 h reinvestigated. behavior differs significantly two cases showing noticeable effect due humidity. Also, magnetic induction was using vibrating sample magnetometer (VSM). show superparamagnetic behavior.
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