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物理学报. 2005, 54(4): 1826-1830.
doi: 10.7498/aps.54.1826.
单轴M型SrFe12-xCrxO19超细粒子结构与磁性研究
- 收稿日期: 2004-08-10
- 修回日期: 2004-11-02
- 刊出日期: 2005-02-05
English Abstract
Studies on structure and magnetic properties of uniaxial M-type SrFe12-x 12-xCrxxO1919 hexaferrite nano-crystalline
- Received Date:
10 August 2004
- Accepted Date:
02 November 2004
- Published Online:
05 February 2005
Abstract: SrFe12-x12-xCrxxO1919 (x=0—10) hexaferri te nanoparticles have been fabricated using a sol-gel technique for perpendicular magnetic recording. Experimental results have shown that the values of specific saturation mag netization, σss, increase for x≤04 as the Cr doping content incre ases, and reach maximum at x=02, while the coercivity, Hcc, decreas es for x＜05 This feature is favorable to magnetic recording. It is also fou nd that the α-Fe22O33 non-magnetic phase appears after x=06 and remai ns to be a hexagonal magnetoplumbite phase for x=0—04 Magnetic measurem ents have revealed that Cr substitution can decrease the magnetization and incre ase the peak-widening for Hopkinson peak when doped with Cr3+3+.
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Keywords:
- hexaferrite /
- Cr3+3+ /
- structure /
- magnetic property
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