Structural and magnetic properties of W-type hexa-ferrite Ba1-xSmxMg2Fe15.6Co0.4O27 ferrites
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Sm3+-substituted W-type Ba1-xSmxMg2.Fe15.6Co0.4O27 (x=0.00 to 0.30 with steps of 0.06) ferrites were prepared by a solid-statemethod. The XRD results indicated that the single W-type ferrite structure can be obtained for the specimens with x≤0.18,while the impurity phases appeared for x≤0.18. The lattice parameters a and c, the cell volume (Vcell) and the average grainsize (Da) decrease with the increase of x. From the FE-SEM images, it can be found that all the samples exhibited a hexagonalplate shape. The saturation magnetization and the initial magnetic permeability first increased with x from 0.0 to 0.12, butthen decreased with x>0.12. The coercivity kept increasing with the increase of x gradually.
Abstract
Sm3+-substituted W-type Ba1-xSmxMg2.Fe15.6Co0.4O27 (x=0.00 to 0.30 with steps of 0.06) ferrites were prepared by a solid-statemethod. The XRD results indicated that the single W-type ferrite structure can be obtained for the specimens with x≤0.18,while the impurity phases appeared for x≤0.18. The lattice parameters a and c, the cell volume (Vcell) and the average grainsize (Da) decrease with the increase of x. From the FE-SEM images, it can be found that all the samples exhibited a hexagonalplate shape. The saturation magnetization and the initial magnetic permeability first increased with x from 0.0 to 0.12, butthen decreased with x>0.12. The coercivity kept increasing with the increase of x gradually.