采用溶胶-凝胶自蔓延法制备 La3＋掺杂 Ni0．35 Co0．15 Zn0．5 Fe2 O4，并研究不同掺杂量对样品微观结构、电磁参数及微波吸收性能的影响。通过 X 射线衍射仪、扫描电镜研究了样品的相结构和微观形貌，使用振动样品磁强计与矢量网络分析仪分别对样品的静态磁性能及在1～12GHz 的电磁参数进行了研究，并计算了不同厚度（3 mm、5 mm、8 mm）下材料的反射损耗。研究表明，适量掺杂 La3＋能够提高 Ni0．35 Co0．15 Zn0．5 Fe2 O4铁氧体的吸波性能，并使吸收频带向高频移动。其中样品 Ni0．35 Co0．15 Zn0．5 La0．04 Fe2 O4与石蜡混合厚度为5mm 时，最小反射损耗为－28．4dB，小于－10dB 带宽为3．7GHz。
La3 + doped NiCoZn-ferrite particles were prepared by the sol-gel method,the influence of La3 + content on microstructure, electromagnetic parameters and microwave absorbing properties was studied.Phase structure and microscope image of the sample were investigated by X-ray diffraction and scanning electron microscopy,their static magnetic properties and electromagnetic parameters at 1-12GHz were measured by a vibrating sample magnetometer and vector network analyzer respectively,and the reflection loss was cal-culated with different thicknesses(3mm,5mm,8mm).The results show that doping appropriate amount of La3 + can enhance the mi-crowave absorption of Ni0.35 Co0.15 Zn0.5 Fe2 O4 -ferrite,and remove the absorbing band to high frequency.When the sample thickness of Ni0.35 Co0.15 Zn0.5 La0.04 Fe2 O4 mixed with paraffin is 5mm,the minimum reflection loss is -28.4dB,bandwidth (RL≤ -10 dB)is 3.7GHz.
参考文献
| [1] | Xu P;Han XJ;Wang MJ.Synthesis and magnetic properties of BaFe12O19 hexaferrite nanoparticles by a reverse microemulsion technique[J].The journal of physical chemistry, C. Nanomaterials and interfaces,200716(16):5866-5870. |
| [2] | Xueai Li;Xijiang Han;Yanjiang Tan.Preparation and microwave absorption properties of Ni-B alloy-coated Fe_3O_4 particles[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20081/2(1/2):352-356. |
| [3] | 宫剑;徐光亮;余洪滔;黄纯洁;任小虎.W型六角晶系铁氧体和钛酸钡共混制备吸波材料[J].人工晶体学报,2012(4):1119-1124. |
| [4] | Dong-Lin Zhao;Ojang Lv;Zeng-Min Shen.Fabrication and microwave absorbing properties of Ni-Zn spinel ferrites[J].Journal of Alloys and Compounds,20092(2):634-638. |
| [5] | Bueno AR;Gregori ML;Nobrega MCS.Microwave-absorbing properties of Ni0.50-xZn0.50-xMe2xFe2O4 (Me = Cu, Mn, Mg) ferrite-wax composite in X-band frequencies[J].Journal of Magnetism and Magnetic Materials,20086(6):864-870. |
| [6] | Aphesteguy, JC;Damiani, A;DiGiovanni, D;Jacobo, SE.Microwave-absorbing characteristics of epoxy resin composites containing nanoparticles of NiZn- and NiCuZn-ferrites[J].Physica, B. Condensed Matter,200918(18):2713-2716. |
| [7] | Bayrakdar, H..Complex permittivity, complex permeability and microwave absorption properties of ferrite-paraffin polymer composites[J].Journal of Magnetism and Magnetic Materials,201114(14):1882-1885. |
| [8] | Meena, RS;Bhattachrya, S;Chatterjee, R.Complex permittivity, permeability and wide band microwave absorbing property of La3+ substituted U-type hexaferrite[J].Journal of Magnetism and Magnetic Materials,201014(14):1923-1928. |
| [9] | Deng, L.;Ding, L.;Zhou, K.;Huang, S.;Hu, Z.;Yang, B..Electromagnetic properties and microwave absorption of W-type hexagonal ferrites doped with La~(3+)[J].Journal of Magnetism and Magnetic Materials,201114(14):1895-1898. |
| [10] | Xu, JJ;Yang, CM;Zou, HF;Song, YH;Gao, GM;An, BC;Gan, SC.Electromagnetic and microwave absorbing properties of Co(2)Z-type hexaferrites doped with La3+[J].Journal of Magnetism and Magnetic Materials,200919(19):3231-3235. |
| [11] | Pawan Kumar;S.K. Sharma;M. Knobel.Effect of La~(3+) doping on the electric, dielectric and magnetic properties of cobalt ferrite processed by co-precipitation technique[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20101(1):115-118. |
| [12] | Abbas SM;Chatterjee R;Dixit AK;Kumar AVR;Goel TC.Electromagnetic and microwave absorption properties of (Co2+-Si4+) substituted barium hexaferrites and its polymer composite[J].Journal of Applied Physics,20077(7):74105-1-74105-6-0. |
| [13] | JianLiang Xie;Mangui Han;Liang Chen;Renxiong Kuang;Longjiang Deng.Microwave-absorbing properties of NiCoZn spinel ferrites[J].Journal of Magnetism and Magnetic Materials,20071(1):37-42. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%