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Magnetic and Microwave Properties of Sm-Doped SrFe _{12} O _{19} Single Crystals

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11 Author(s)
Jalli, J. ; Dept. of Electr. & Comput. Eng., Univ. of Alabama, Tuscaloosa, AL ; Hong, Yang-Ki ; Sung-Hoon Gee ; Seok Bae
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Samarium (Sm) doped M-type strontium ferrite single crystals have been successfully grown from melts using a flux system of SrCO3 and Na2CO3. The crystals exhibited the typical hexagonal ferrite growth habit with a plate-like geometry, and the largest crystals obtained are of 10 mm in length and 3-4 mm in thickness, respectively. It was observed that the saturation magnetization and anisotropy field are greatly affected by the doping concentration of Sm. A saturation magnetization (sigmas) of 69.8 emu/g and an anisotropy field (H k) of 25 kOe was achieved. Room temperature FMR measurements show 85 Oe of linewidth (DeltaH) at 53 GHz.

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Magnetics, IEEE Transactions on  (Volume:44 ,  Issue: 11 )