Crystal structure and microstructure of Z-type hexaferrite (Ba, La)Co2Fe24O41 by molten salt synthesis

被引：0

作者：

Lee, Do Hyeok ^{[1
]}

Kwon, Chae-Yeon ^{[1
,2
]}

Moon, Kyoung-Seok ^{[1
]}

机构：

[1] Gyeongsang Natl Univ, Sch Mat Sci & Engn, Jinju 52828, South Korea

[2] Korea Inst Mat Sci KIMS, Dept Energy & Elect Mat, Surface Mat Div, Chang Won 51508, South Korea

来源：

JOURNAL OF THE KOREAN CRYSTAL GROWTH AND CRYSTAL TECHNOLOGY | 2021年 / 31卷 / 05期

关键词：

Hexaferrite; Molten salt; Crystal structure; Microstructure; COMPOSITES;

D O I：

10.6111/JKCGCT.2021.31.5.197

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Synthesis of Z-type hexaferrite Ba3Co2Fe24O41 (Ba(3)Z) and Ba1.5La1.5Co2Fe24O41 (Ba(1.5)La(1.5)Z) powders were tried using molten salt synthesis after primary calcination. Ba(3)Z calcined at 1000 degrees C was formed with both M-type and Y-type hexaferrite, and then Z-type was obtained when sintered with molten salt at 1150 degrees C and 1200 degrees C. In the case of Ba(1.5)La(1.5)Z calcined at 1000 degrees C, however, M-type hexaferrite, CoFe2O4 (Spinel phase), and LaFeO3 were synthesized. As a result, Z-type hexaferrite was not synthesized after sintering with molten salt. In addition, the aspect ratio of the particles decreased as the sintering temperature increased with molten salt synthesis. To obtain a single-phase Ba(1.5)La(1.5)Z with a high aspect ratio, it is expected the raw materials have to calcine below the temperature of a spinel phase formation before sintering with molten salt.

引用

页码：197 / 202

页数：6

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