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Synthesis of Ni-Zn Ferrite Films by Spin-spray Plating Method

Author: HuQingPing
Tutor: DongZeHua
School: Huazhong University of Science and Technology
Course: Applied Chemistry
Keywords: Ni-Zn ferrite thin films Rotary spraying method Magnetic properties
CLC: TM277
Type: Master's thesis
Year: 2007
Downloads: 52
Quote: 0
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Abstract


The main purpose of this paper is to Ni - Zn ferrite thin films were prepared with rotary sputtering method . FeCl NiCl 2 of ZnCl 2 2 also dope and CH 3 COONH 4 NH 3 H 2 O NaNO 2 oxide composition was continuously to the turntable on the glass substrate spraying at 90 ℃ reaction 1-2μm thick Ni-Zn ferrite thin films were prepared . The phase samples determined by X -ray diffraction (XRD) , scanning electron microscopy (SEM) observation and analysis of the morphology of the film , using a vibrating sample magnetometer (VSM) and vector network analyzer measured the magnetic properties of the films . In the experiment, the researchers oxidation pH value , different content of Zn -doped Co film properties . Obtained the following conclusion: when the pH value of the oxidizing solution is increased from 8.0 to 8.8 , the film deposition rate and the surface roughness have a corresponding increase . X-ray diffraction (XRD) shows the diffraction peak characteristic of the thin film having a spinel structure ferrite prepared . Oxidizing solution pH of 8.0 , the film has a higher saturation magnetization , the greater the coercive force and a larger complex magnetic permeability . The prepared film shows high 210.3kA / m , saturation magnetization and 1.218kA / m of the low coercive force . Decreases when the Zn content increases from 0.1 to 0.6 hours , the film saturation magnetization Ms first increases . When the Zn content is 0.3 , the saturation magnetization Ms of the film to 147.8 kA / m, and a coercivity for 2.489kA / m . Decreases when the Co content increases from 0 to 0.09 , the film 's complex permeability increase the lead , and resistivity ρ has been increased . Composition of the Co content of 0.03 when the film is more uniform , dense nickel zinc cobalt ferrite film . When the Co content is 0.03 when the complex magnetic permeability of the real part μ ' reaches a maximum at about 1.7GHz 72.5 , the imaginary part μ \

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CLC: > Industrial Technology > Electrotechnical > Electrical materials > Magnetic materials,ferrite > Ferrite,oxide magnetic materials
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