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Ferrite powder and formed body prepared by same
The invention discloses ferrite powder and a formed body prepared by same. In the granularity distribution determination of a laser diffraction granularity distribution instrument, the geometric standard deviation of the granularity distribution is 1.4 to 1.59, the average volumetric particle size is 0.9 to 1.5 micrometers, the particle size X10 of screen underflow with an accumulated ratio of 10 percent is 0.35 to 0.55 micrometers, and the particle size X90 of the screen underflow with accumulated ratio of 90 percent is 1.5 to 2.5 micrometers. By adopting the ferrite powder, the SFD can be effectively controlled to be less than or equal to 0.30, so that the homogenization degree of the coercivity is higher, the magnetic uniformity is better, the magnetic performance is higher, when a magnetic recording medium is formed, a transitional area between two recording sites is smaller, the recording density is higher, the signal sensitivity is better, the print-through effect of the magnetic recording medium is smaller, and the rewriting performance is better.
Ferrite powder and formed body prepared by same
The invention discloses ferrite powder and a formed body prepared by same. In the granularity distribution determination of a laser diffraction granularity distribution instrument, the geometric standard deviation of the granularity distribution is 1.4 to 1.59, the average volumetric particle size is 0.9 to 1.5 micrometers, the particle size X10 of screen underflow with an accumulated ratio of 10 percent is 0.35 to 0.55 micrometers, and the particle size X90 of the screen underflow with accumulated ratio of 90 percent is 1.5 to 2.5 micrometers. By adopting the ferrite powder, the SFD can be effectively controlled to be less than or equal to 0.30, so that the homogenization degree of the coercivity is higher, the magnetic uniformity is better, the magnetic performance is higher, when a magnetic recording medium is formed, a transitional area between two recording sites is smaller, the recording density is higher, the signal sensitivity is better, the print-through effect of the magnetic recording medium is smaller, and the rewriting performance is better.
Ferrite powder and formed body prepared by same
HAN CHAO (author) / LIAO YOULIANG (author) / GAO LEI (author) / WANG QIAN (author) / LIU RONGMING (author) / LI BINGSHAN (author) / HU GUOHUI (author) / WANG YONGQI (author) / JIA LIYING (author)
2015-12-09
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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