采用普通陶瓷工艺制备了Gd掺杂的Co2Z型平面六角铁氧体3(Ba0.5Sr0.5)·2Co0·0.05Gd2O3·10.8Fe203,对其微结构和高频性能进行了研究.结果表明,少量掺杂Gd的Co2z型铁氧体仍具有单相的Z型平面六角结构,其磁导率实部μ'明显提高,可达到13,而截止频率仍大于1GHz,具有较好的高频性能.随着烧结温度的提高,材料的磁导率实部μ'增大,但截止频率下降.少量Gd的掺杂对Co2Z型铁氧体的复介电常数值没有明显影响,但材料的铁电共振峰向高频区移动.
Gd doped Co2Z type hexagonal ferrite 3(Ba0.5 Sr0.50)·2CoO·0.05Gd2O3·10.8Fe2O3 was prepared by the conventional ceramic method.The microstructures and high frequency properties of the material were investigated.The results show that the Co2Z ferrite doped with a small amount of Gd is also the single phase of Co2Z planar hexagonal structure.The addition of Gd in Co2Z ferrite can increase the real part μ' of complex permeability significantly.The Gd doped Co2Z ferrite exhibits excellent high frequency properties such as high initial permeability up to 13 and high cut-off frequency above 1GHz.With increasing sintering temperature,the real part μ' of complex permeability increases and cut-off frequency goes down.The addition of Gd has no obvious effect on the complex dielectric constant of CO2Z ferrite,but the ferroelectric resonance peak of Gd doped ferrite shifts to higher frequency region as a consequence.
参考文献
| [1] | R.C. Pullar;S.G. Appleton;M.H. Stacey .The manufacture and characterisation of aligned fibres of the ferroxplana ferrites Co_(2)Z, 0.67% CaO-doped Co_(2)Z, Co_(2)Y and Co_(2)W[J].Journal of Magnetism and Magnetic Materials,1998(3):313-325. |
| [2] | Xiaohui Wang;Longtu Li;Shuiyuan Su .Low-temperature sintering and high frequency properties of Cu-modified Co_2Z hexaferrite[J].Journal of the European Ceramic Society,2003(5):715-720. |
| [3] | Hongguo Zhang;Ji Zhou;Zhengxing Yue et al.Investigation of low-temperature sintering of Pb-modified Co2Z hexaferrite[J].Materials Science and Engineering B,1999,65:184-186. |
| [4] | Hsing-Ⅰ Hsiang;Chi-Shiung Hsi;Tin-Chin Lee et al.Effects of glass additions on 3Ba0.5Sr0 5O2CoO 12Fe2O3 for high-frequency applications[J].Journal of Magnetism and Magnetic Materials,1999,268:186-193. |
| [5] | Takeshi Tachibana;Takashi Nakagawab;Yukio Takadab et al.Influence of ion substitution on the magnetic structure and permeability of Z-type hexagonal Ba-ferrites:Ba3Co2-xFe24+x_yCryO41[J].Journal of Magnetism and Magnetic Materials,2004,284:369-375. |
| [6] | Changsheng Wang;Xiwei Qi;Longtu Li .High-frequency magnetic properties of low-temperature sintered Co-Ti substituted barium ferrites[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2003(1/3):270-273. |
| [7] | Kamishima K;Ito C;Kakizaki K;Hiratsuka N;Shirahata T;Imakubo T .Improvement of initial permeability for Z-type ferrite by Ti and Zn substitution[J].Journal of Magnetism and Magnetic Materials,2007(1):228-233. |
| [8] | Kimura O;Matsumoto M;Sakakura M et al.Enhanced dispersion frequency of hot-pressed Z-type magnetoplumbite ferrite with the composition 2CoO·3Ba0.5 Sr0 50·10 8Fe2O3[J].Journal of the American Ceramic Society,1995,78:2857-2861. |
| [9] | T. Tachibana;T. Nakagawa;Y. Takada .X-ray and neutron diffraction studies on iron-substituted Z-type hexagonal barium ferrite: Ba_3Co_(2-x)Fe_(24+x)O_(41) (x=0-0.6)[J].Journal of Magnetism and Magnetic Materials,2003(2):248-257. |
| [10] | Changsheng Wang;Longtu Li;Ji Zhou .Microstructures and high-frequency magnetic properties of low-temperature sintered Co-Ti substituted barium ferrites[J].Journal of Magnetism and Magnetic Materials,2003(1):100-106. |
| [11] | Jian Er Bao;Ji Zhou;Zhen Xing Yue .Electrical and magnetic studies of Ba_3Co_2Fe_(23-12x)Mn_(12x)O_(41) Z-type hexaferrites[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2003(1/3):98-101. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%