Abstract
Zinc ferrite and strontium hexaferrite; SrFe12O19/ZnFe2O4 (SrFe11.6Zn0.4O19) nanoparticles having super paramagnetic nature were synthesized by simultaneous co-precipitation of iron, zinc and strontium chloride salts using 5 M sodium hydroxide solution. The resulting precursors were heat treated (HT) at 850, 950 and 1150°C for 4 h in nitrogen atmosphere. The hysteresis loops showed an increase in saturation magnetization from 1.040 to 58.938 emu/g with increasing HT temperatures. The ‘as-synthesized’ particles have size in the range of 20–25 nm with spherical and needle shapes. Further, these spherical and needle shaped nanoparticles tend to change their morphology to hexagonal plate shape with increase in HT temperatures. The effect of such a systematic morphological transformation of nanoparticles on dielectric (complex permittivity and permeability) and microwave absorption properties were estimated in X band (8.2–12.2 GHz). The maximum reflection loss of the composite reaches −26.51 dB (more than 99% power attenuation) at 10.636 GHz which suits its application in RADAR absorbing materials.
Similar content being viewed by others
References
Vishwanathan B, and Murthy V R K, Ferrite Materials Science and Technology, Narosa Publishing House, New Delhi (1990).
Li D S, Horikawa T, Liu J R, Itoh M, and Machida K, J Alloys Compd 408 (2006) 1429.
Masala O, Hoffman D, Sundaram N, Page K, Proffen T, Lawes G, and Seshadri R, Solid State Sci 8 (2006) 1015.
Maeda T, Sugimoto S, Kagotani T, Tezuka N, and Inomata K, J Magn Magn Mater 281 (2004) 195.
Liu J R, Itoh M, and Machida K, Appl Phys Lett 88 (2006) 062503/1.
Peng C H, Hwang C C, Wan J, Tsai J S, and Chen S Y, Mater Sci Eng B 117 (2005) 27.
Yusoff A N, and Abdullah M H, J Magn Magn Mater 269 (2004) 271.
Qiu J X, Wang C Y, and Gu M Y, Mater Sci Eng B 112 (2004) 1.
Cullity B D, and Graham C D, Introduction to Magnetic Materials, John Wiley & Sons, Hoboken, New Jersey (2008).
Chin T S, Hsu S L, and Deng M C, J Magn Magn Mater 120 (1993) 64.
Liu X, Wang J, Gan L M, and Ng S C, J Magn Magn Mater 195 (1999) 452.
Sivakumar M, Gedanken A, Zhong W, Du Y W, Bhattacharya D, Yeshurun Y, and Felner I, J Magn Magn Mater 268 (2004) 95.
Huang J, Zhuang H, and Li W, J Magn Magn Mater 256 (2003) 390.
O’Donoghue M, A Guide to Man-Made Gemstones, Van Nostrand Reinhold, Great Britain (1983) p 40.
Suslick K S, Ultrasound: Its Chemical, Physical and Biological Effects, VCH, Weinheim (1988).
Hasab M G, Ebrahimi S A S, and Badiei A, J Eur Ceram Soc 27 (2007) 3637.
Hasab M G, Ebrahimi S A S, and Badiei A, J Eur Ceram Soc 310 (2007) 2477.
Hessien M M, Rashad M M, and El-Barawy K, J Magn Magn Mater 320 (2008) 336.
Tyagi S, Agarwala R C, and Agarwala V, J. Nano R 10 (2010) 19.
Sharma R, Agarwala R C, and Agarwala V, Mater Lett 62 (2008) 2233.
Sharma R, Agarwala R C, and Agarwala V, J. Nano R 2 (2008) 91.
Fu Y P, and Lin C H, J Alloys Compd. 386 (2005) 222.
Ataie A, and Heshmati-Manesh S, J Eur Ceram Soc 21(2001) 1951.
Ruan S, Xu B, Suo H, Wu F, Xiang S, and Zhao M, J Magn Magn Mater 212 (2000) 175.
Liu X, Zhang Z, and Wu Y, Composites: Part B 42 (2011) 326.
Acknowledgments
The authors acknowledge Ministry of Human Resource Development (MHRD), Government of India for the fellowship granted to first author of this study.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Tyagi, S., Baskey, H.B., Agarwala, R.C. et al. Synthesis and Characterization of Microwave Absorbing SrFe12O19/ZnFe2O4 Nanocomposite. Trans Indian Inst Met 64, 607–614 (2011). https://doi.org/10.1007/s12666-011-0068-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12666-011-0068-7