Document Type : Research Article

Authors

1 Department of Physics, Osmania University, Hyderabad 500 007, India.

2 Department of Physics, Osmania University, Hyderabad 500 007, India. Geethanjali college of Engineering and Technology, Cheeryal, Hyderabad 501301

Abstract

Microwave-hydrothermal (M-H) method had been employed to synthesize a series of Dy3+doped Mn-Zn ferrite Mn0.6Zn0.4Fe2–xDyxO4 (x=0, 0.01, 0.03, 0.05, 0.07, 0.09) nanopowders at 160°C/30 min. The prepared samples have been characterized by Fourier Transform Infrared Spectrometer. The grain size of sintered ferrites are in the range of 60-70 nm. Decrease in saturation magnetization and increase in coercivity were observed with an increase of Dy3+ concentration in Mn-Zn ferrites. The complex permeability and complex permittivity of the prepared samples were measured in the frequency range of 2–18 GHz using a using a vector network analyzer. It is observed that small variation of Dy3+ substitution in spinel ferrite tailored microwave absorbing parameters dramatically. The reflection loss (RL) increased with the Dy3+ content upto x ≤ 0.03. The sample with x=0.03 of thickness 2.3 mm showed minimum reflection loss of -20.5 dB with a bandwidth of 3.8 GHz. Thus the present materials exhibit good microwave absorption properties and hence can act as EMI suppressors. Copyright © 2018 VBRI Press.

Keywords

1. Tong, C; Advanced materials and design for board level EMI
shielding -Principle of board level shielding; BLS, 2012.

2. Renlong Ji; Chuanbao Cao; Zhuo Chen; Huazhang Zhai; Ju Bai;
J. Mater.Chem. C, 2014, 2, 5944.

3. Rabia Ahmad; Iftikhar Hussain Gul; Muhammad Zarrar;
Humaira Anwar ;Muhammad Bilal Khan Niazi; Azim Khan; J.
Magn. Magn. Mater,2016,405,28.

4. Fengying Guo;Guijuan Ji; Jijing Xu; Haifeng Zou; Shucai Gan;
Xuechun Xu; J. Magn. Magn. Mater324,2012, 1209.

5. Yankui Cheng; Xiaohu Ren; J. Supercond. Novel Magn.,2016,
29, 803.

6. Min Wang ; Guangbin Ji ; Baoshan Zhang ; Dongming Tang ;Yi
Yang ;Youwei Du ; J. Magn. Magn. Mater. , 377, 2015, 52.

7. Chunming Yang ; Junjun Jiang; Xiaohua Liu; Chengjie Yin;
Cuifen Deng;J. Magn. Magn. Mater, 404,2016,45.

8.Juhua Luo ; Yang Xu; Duoduo Gao; Solid State Sci. 37, 2014,40.

9. Juhua Luo; Yang Xu; Hongkai Mao;J. Magn. Magn. Mater., 381,
2015,365.

10.Shital Patangrao Pawar; Dhruva Marathe, A.;Pattabhi,K.;
Suryasarathi Bose; J. Mater. Chem. A, 2015, 3, 656.

11.Bayat M.; Yang, H.; Ko, F.K.; Michelson, D.; Mei, A., J,Polym.,
JPOL, 2013,16679.

12.Lu, X.; Liang. G.; Zhang. Y.; Wei Zhang;Nanotechnology, 18,
2007, 015701.

13.Dong-Lin Zhao;Qiang Lv; Zeng-Min Shen;J. Alloys Compd.,
480, 2009,63.

14. Xiaohu Ren, Guangliang Xu; J. Magn. Magn. Mater.354, 2014,
44.

15.Yan Wang, Xinming Wu, Wenzhi Zhang, Weixing Chen, J.
Magn. Magn.Mater.,398 ,2016,90.

16. Wang, W. J; Jiao, Q. J.; Zang, C .G.;Zhu, X. D. Adv. Mater. Res.
30,2011, 415.

17. Wang, J., Zhang, H., Bai, S.X.; Chen, K.; Zhang, C.R.; J. Magn.
Magn. Mater.312,2007,310

18. Waldron, R. D; Phys. Rev. B: Solid State,99,1955,263.

19. Shirsath, S. E. ; Jadhav, S. S. ; Toksha, B. G.; Patange, S. M.;
Jadhav, K. M. ; J. Appl. Phys., 2011, 110, 013914.

20.Pradhan, S. K; Bid, S; Gateshki, M.; Petkov, V.; Mater. Chem.
Phys., 93,2005, 224.

21. Jiang, J.; Li, L.C.; Xu, F.; J. Rare Earths. 25,2007,1, 79.

22. Rezlescu, N.; Rezlescu, E.; Popa, P.D.; Rezlescu. L.; J. Alloys
Compds.275, 1998, 657.

23. Thankachan, Smitha; Binu, P.; Sheena, Xavier, Jacob;
Mohammed, E.,M., J. Mag. Mag. Mat. 348, 2013, 140.

24. Kamala Bharathi K., Arout Chelvane J., Markandeyulu G., J.
Magn. Magn. Mater, 321,2009,3677.

25.Rezlescu, N.; Rezlescu E.; Pasnicu, C.; Craus, M. L.; J. Phys.:
Condens. Matter, 6, 1994, 29,5707.

26 Zhao, Z.Y.; Wang, X.M.; Fan, C.; Tao, W.; Liu, X.G.; Ke, W.P.;
Zhang, F.B.; Zhao, X.; Sun, X.F.; Phys. Rev. B,2011, 83, 014414

27.Cai, X. D.; Wang, J. J.; Liang, G. H.; Guo, J. S.; Hou, Y. S.; Gao,
H. T.; Yu, L.; J. Alloys Compds.636, 2015, 348.

28. Xu, J. J.; Yang, C. M.; Zou, H. F.; Song, Y. H.; Gao, G. M.; An,
B. C.; Gan, S. C.; J. Magn. Magn. Mater. 321, 2009, 3231.

29. Deng, L. ; Ding, L.; Zhou, K.; Huang, S.; Hu, Z.; Yang, B.; J.
Magn. Magn. Mater. 323, 2011 1895.

30. Zhang, J.; Wang, L.; Hu, L. C.; Zeng, G.X.; Zhang H. Y.;
Materials Exploration and Application. 21,2006, 33.

31. Sun, J.;Liu, J. H.; Li, S. M.; J. Inorg. Mater. 20, 2005, 5, 1077.

32. Li, Y.Q.; Huang, Y.; Qi, S.H.; Niu, F.F.; Niu, L.; J. Magn. Magn.
Mater. 323, 2011, 2224.