Title :
Ion distribution and saturation magnetization of aluminum substituted lithium ferrites
Author :
Jung, T.H. ; Park, D.H. ; Kwon, S.J.
Author_Institution :
Dept. Mater. & Eng., POSTECH, Pohang, South Korea
fDate :
11/1/1995 12:00:00 AM
Abstract :
Ion distribution is determined in a series of aluminum substituted lithium ferrites by carefully analyzing the powder X-ray diffraction patterns. A new finding is that Al+3´s substitute the Fe+3´s in tetrahedral sites as well as in octahedral sites of the spinel structure. The proper formula, then, is (Fe1-a+3Ala+3)[Li0.5 +Fe1.5-(x-a)Alx-a+3]O 4, where a is approximately 0.23x2+0.22x. The saturation magnetizations are calculated and compared with the measured values
Keywords :
X-ray diffraction; crystal structure; ferrites; lithium compounds; magnetisation; Al substituted lithium ferrites; ion distribution; octahedral sites; powder X-ray diffraction patterns; saturation magnetization; spinel structure; tetrahedral sites; Aluminum; Ferrites; Lithium; Magnetic analysis; Magnetic materials; Pattern analysis; Powders; Saturation magnetization; Temperature; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
