Microstructure and Microwave Absorption Properties of Y-Substituted Ni-Zn Ferrites

Na Chen, Mingyuan Gu
2012 Open Journal of Metal  
The Yttrium ions substituted Ni-Zn ferrites powders were prepared using a sol-gel technique. The crystal structure, magnetic properties and microwave absorption properties of the Ni-Zn ferrites powders were studied by X-ray diffraction, vibrating sample magnetometer and vector network analyzer. The results show that the microwave absorption properties of the Ni-Zn ferrites can be improved effectively with the substitution of Y ions. The minimum reflection loss of the Yttrium ions substituted
more » ... ions substituted Ni-Zn powder reaches -34.8 dB, with the -20 dB bandwidth over 2 GHz. The Yttrium substitution can improve microwave absorption properties of Ni-Zn ferrite due to smaller grain dimension and the higher specific magnetization
doi:10.4236/ojmetal.2012.22006 fatcat:62kinf7mbffvrmuahbanbdrna4