Title :
Coercivity of SrFe12O19 Hexaferrite Platelets Near Single Domain Size
Author :
Jihoon Park ; Yang-Ki Hong ; Woncheol Lee ; Sung-Yong An ; Jung-Wook Seo ; Kang-Heon Hur
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alabama, Tuscaloosa, AL, USA
fDate :
7/7/1905 12:00:00 AM
Abstract :
The magnetization and coercivity of M-type strontium hexaferrite (SrFe12O19) platelets with diameters from 0.65 to 0.99 μm were measured at 300 K to investigate the intrinsic coercivity behavior near single domain size. The maximum intrinsic coercivity occurs at a platelet diameter of ~0.83 μm, which is close to the theoretical single domain size of 0.74 μm, while the magnetization slightly decreases as the platelet size increases. The size dependence of the intrinsic coercivity curve for SrFe12O19 platelets is presented below and above the single domain size.
Keywords :
coercive force; ferrites; magnetic domains; strontium compounds; M-type strontium hexaferrite platelets; SrFe12O19; intrinsic coercivity; magnetization; single domain size; size 0.65 mum to 0.99 mum; temperature 300 K; Barium; Coercive force; Ferrites; Human computer interaction; Iron; Magnetization; Strontium; Hard magnetic materials; coercivity; magnetization; particle size dependence; single domain;
Journal_Title :
Magnetics Letters, IEEE
DOI :
10.1109/LMAG.2015.2460215
