Influence of substitutional defects on the structural and magnetic properties of barium hexaferrites

被引：9
作者：
Aladerah, Bilal [1 ]
Gharaibeh, Maen [1 ]
Obeidat, Abdalla [1 ]
机构：
[1] Jordan Univ Sci & Technol, Dept Phys, Irbid 22110, Jordan
来源：
PHYSICA SCRIPTA | 2023年 / 98卷 / 12期
关键词：
M-type barium hexaferrite; Al-doped; Sr-doped; exchange parameters; magnetic anisotropy energy; CRYSTAL-STRUCTURE; ELECTROMAGNETIC PROPERTIES; STRONTIUM HEXAFERRITES; PSEUDOPOTENTIALS;
D O I：
10.1088/1402-4896/ad0949
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A computational analysis is conducted to understand the impact of Al and Sr substitutions on the structural and magnetic properties of M-type barium hexaferrite (BaFe12O19 or BFO). Al substitutions in BFO led to concentration-dependent increases in lattice parameters and magnetocrystalline anisotropy energy ( EMCA ), while the magnetic moment showed a decline. In contrast, Sr substitutions influenced the lattice differently, reducing parameters but enhancing both EMCA and the spin magnetic moment, especially under varying Coulomb interaction ( Ueff ) conditions. It's noteworthy that the EMCA value reached approximately 1.03 meV with full Sr substitution. Furthermore, SrFe12O19 (SFO) consistently outperformed BFO in terms of exchange interaction parameters. These findings offer valuable insights for the development and optimization of next-generation magnetic materials.
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页数：11
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