STRUCTURAL AND MAGNETIC-PROPERTIES OF BAFE12-2XCOXTIXO19 POWDERS PREPARED BY THE GLASS CRYSTALLIZATION METHOD

被引:53
作者
GORNERT, P
SINN, E
SCHUPPEL, W
PFEIFFER, H
ROSLER, M
SCHUBERT, T
JURISCH, M
SELLGER, R
机构
[1] INST FESTKORPERPHYS & ELEKTRONENMIKROSKOPL,O-4020 HALLE,GERMANY
[2] ZENT INST FESTKORPHERPHYS & WERKSTOFFORSCH,O-8027 DRESDEN,GERMANY
关键词
D O I
10.1109/20.50475
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The glass crystallization method is shown to be suitable for preparing BaFe12−2x-Cox TixO19 powders with a nearly perfect crystallographic structure and a narrow particle size distribution. The dependences of the specific magnetization, the coercivity, and the particle size distribution on both the annealing temperature and the Co-Ti content correlate in a characteristic way. Furthermore the lattice parameters, the specific surfaces and the thickness of the effective nonmagnetic surface layer were determined. The coercivity of the hexaferrite magnetic tapes is more than 8 × 103 A/m higher than for the the corresponding powders. © 1990 IEEE
引用
收藏
页码:12 / 14
页数:3
相关论文
共 11 条
[1]  
ANDRA W, COMMUNICATION
[2]  
HIBST H, 1982, ANGEW CHEM, V94, P263
[3]  
KOCH M, COMMUNICATION
[4]  
Kojima H., 1982, FERROMAGNETIC MAT
[5]   PARTICLE-SIZE EFFECTS ON MAGNETIC-PROPERTIES OF BAFE12-2XTIXCOXO19 FINE PARTICLES [J].
KUBO, O ;
IDO, T ;
YOKOYAMA, H ;
KOIKE, Y .
JOURNAL OF APPLIED PHYSICS, 1985, 57 (08) :4280-4282
[6]  
KUBO O, 1980, DE3041960
[7]  
MELZER K, COMMUNICATION
[8]  
PFEIFFER H, IN PRESS PHYS STAT S
[9]   MAGNETIC PROPERTIES OF BARIUM FERRITE FORMED BY CRYSTALLIZATION OF A GLASS [J].
SHIRK, BT ;
BUESSEM, WR .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1970, 53 (04) :192-&
[10]   A MECHANISM OF MAGNETIC HYSTERESIS IN HETEROGENEOUS ALLOYS [J].
STONER, EC ;
WOHLFARTH, EP .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1948, 240 (826) :599-642