A study on the microstructural and magnetic properties of the Sr0.70-xBax La0.30Fe11.78Cu0.22O19 hexagonal ferrites

作者：Yang Yujie^*; Liu Xiansong

来源：International Journal of Modern Physics B, 2014, 28(21): 1450140.

DOI：10.1142/S0217979214501409

• Hexaferrites
• La-Cu substitution
• barium content
• magnetic properties
• X-ray diffraction

Hexagonal ferrite Sr0.70 - xBa (x) La0.30Fe11.78Cu0.22O19 (0 <= x <= 0.7) magnetic powders and magnets were synthesized by the ceramic process. The phase compositions of the magnetic powders were investigated by X-ray diffraction. There is a single magnetoplumbite phase in the magnetic powders with barium content (x) from 0 to 0.70. The micrographs of the magnets were observed by a field emission scanning electron microscopy. All magnets have formed hexagonal structures and the particles are distributed evenly. Magnetic properties of the magnets were measured by a magnetic properties test instrument. The remanence, intrinsic coercivity, magnetic induction coercivity and maximum energy product of the magnets continuously decrease with the increase of barium content (x).

• 出版日期2014-8-20
• 单位安徽大学