Nanocrystalline La1-xSrxCo1-yFe yO3 perovskites fabricated by the micro-emulsion route for high frequency response devices fabrications
Type
ArticleAuthors
Azhar Khan, MuhammadKhan, Kamran
Mahmood, Azhar
Murtaza, Gulam
Akhtar, Majid Niaz
Ali, Irshad M.
Shahid, Muhammad
Shakir, Imran
Farooq Warsi, Muhammad
KAUST Department
Material Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
Date
2014-09Permanent link to this record
http://hdl.handle.net/10754/563730
Metadata
Show full item recordAbstract
Nanocrystalline La1-xSrxCo1-yFe yO3 (x=0.00-0.60) perovskites were fabricated by a cheap economic route (i.e. micro-emulsion method) and characterized by thermogravimetric analysis (TGA), X-ray diffraction (XRD), fourier transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM). TGA analysis showed ~35% weight loss. The crystallite size determined by XRD and SEM ranged from 30 to 80 nm and ~30 to 50 nm, respectively. The dielectric behavior was evaluated in the range of 1.0×106 Hz to 3.0×10 9 Hz at 298 K, the dielectric parameters resulting appreciably enhanced by co-doping with Sr and Fe. The maximum dielectric parameters (ε′=103.35, ε″=58.92 and tan δ=0.57) were observed for La0.4Sr0.6Co0.4Fe0.6O 3 at 15×106 Hz. Results suggest the potential use of these nanocrystalline perovskites in GHz-operated microwave devices. © 2014 Elsevier Ltd and Techna Group S.r.l.Citation
Azhar Khan, M., Khan, K., Mahmood, A., Murtaza, G., Akhtar, M. N., Ali, I., … Farooq Warsi, M. (2014). Nanocrystalline La1−xSrxCo1−yFeyO3 perovskites fabricated by the micro-emulsion route for high frequency response devices fabrications. Ceramics International, 40(8), 13211–13216. doi:10.1016/j.ceramint.2014.05.027Sponsors
We are thankful to The Islamia University of Bahawalpur-63100 (Pakistan) and Higher Education Commission of Pakistan. One of the authors (Dr. I. Shakir) is thankful to Deanship of Scientific Research at King Saud University (RGP-VPP-312). The international foundation for science (IFS), Sweden is also highly acknowledged for grant no. W/5408-1.Publisher
Elsevier BVJournal
Ceramics Internationalae974a485f413a2113503eed53cd6c53
10.1016/j.ceramint.2014.05.027