HIGH-RESOLUTION ELECTRON-MICROSCOPIC OBSERVATION OF FERROMAGNETIC AMORPHOUS FERRITES IN CAO-BI2O3-FE2O3 AND LI2O-BI2O3-FE2O3 SYSTEMS

被引：9
|
作者：
NAKAMURA, S
HIROTSU, Y
ICHINOSE, N
机构：
[1] WASEDA UNIV,DEPT SCI & ENGN,SHINJUKU KU,TOKYO 169,JAPAN
[2] TECH UNIV NAGAOKA,DEPT MECH ENGN,NAGAOKA 94954,JAPAN
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1991年 / 30卷 / 5A期
关键词：
AMORPHOUS FERRITES; HIGH RESOLUTION ELECTRON MICROSCOPY; FERRIMAGNET; SPEROMAGNET; MICROCRYSTALLINE DOMAINS; MAGNETIC 2 PHASE MODEL;
D O I：
10.1143/JJAP.30.L844
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
High resolution electron microscopic (HREM) observation was carried out for the ferromagnetic amorphous ferrites in the CaO-Bi2O3-Fe2O3 and Li2O-Bi2O3-Fe2O3 systems. Although diffuse halo patterns were taken in electron diffraction, the HREM images revealed that microcrystalline domains extending to several nanometers were densely formed in these specimens. The result is consistent with our previous studies by static magnetic measurements and Fe-57 Mossbauer spectra analysis. "Magnetic two phase model" that consists of a disordered speromagnetic phase and a microcrystalline ferrimagnetic phase is proposed for the ferromagnetic amorphous ferrites.
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页码：L844 / L847
页数：4
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