Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8002071 | Journal of Alloys and Compounds | 2014 | 22 Pages |
Abstract
Submicron strontium hexaferrite (SrFe12O19) particles were synthesized using the sol-gel route. Magnetic properties and structure of strontium ferrite powders were studied at various ranges of calcination temperature (Tca) (750-900 °C), calcination time (3 min-2 h), Fe/Sr molar ratios (RM) (10.5-12), and pH (1-8). The resultant particles were investigated using X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometer. At 750 °C, the Sr-M phase could be obtained for 3 min in air. However, single-phase Sr-M, which had stabilized magnetic properties, was obtained at Tca of 850 °C for 2 h. In solutions at pH 1, magnetic properties of the obtained sample at RM = 10.5 were found to be optimal with maximum saturation magnetization of 56 emu/g and intrinsic coercive force of 6.7 kOe.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Tran Thi Viet Nga, Nguyen Phuc Duong, To Thanh Loan, Than Duc Hien,