Magnetic properties of nanocrystalline Ni-Zn ferrites doped with samarium

被引：60

作者：

Gama, L.

Diniz, A. P.

Costa, A. C. F. M.

Rezende, S. M.

Azevedo, A.

Cornejo, D. R. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Phys, BR-05508900 Sao Paulo, Brazil

[2] Univ Fed Pernambuco, Dept Phys, BR-50670901 Recife, PE, Brazil

[3] UFCG, Dept Mat Engn, BR-58970000 Campina Grande, PB, Brazil

来源：

PHYSICA B-CONDENSED MATTER | 2006年 / 384卷 / 1-2期

关键词：

Ni-Zn ferrites; Ni-Zn-Sm ferrites; soft magnetic materials;

D O I：

10.1016/j.physb.2006.05.161

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We describe the influence of the temperature of sintering on the structure and the static magnetic properties in Ni0.5Zn0.5SmxFe2-xO4 ferrites prepared by combustion synthesis. The increase in Sm content increases the lattice parameter and decreases the mean grain size. The material treated at 600 degrees C should be single spinel ferrite but with low magnetization saturation. Calcinations carried out at 800 and 1000 degrees C resulted in materials with cubic spinel phase, but a small amount of SmFeO3 was also formed. A smooth diminution of the saturation magnetization with an increase in Sm amount was observed. The highest Curie temperatures were obtained for sample treatment at 1000 degrees C with higher Sm content. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：97 / 99

页数：3

共 9 条

[1] Combustion synthesis, sintering and magnetical properties of nanocristalline Ni-Zn ferrites doped with samarium [J].