A comparison between Curie temperature of nano and bulk Al doped nickel ferrite (NiAlFeO4)

被引：0

作者：

Abooalizadeh, Z. ^{[1
]}

Arabnia, Y. ^{[1
]}

Tabrizi, S. ^{[1
]}

Taherkhani, A. ^{[1
]}

机构：

[1] Islamic Azad Univ, Fac Sci, Dept Phys, Takestan, Iran

来源：

LIFE SCIENCE JOURNAL-ACTA ZHENGZHOU UNIVERSITY OVERSEAS EDITION | 2012年 / 9卷 / 03期

关键词：

Inverse Spinel; Sol-gel; Ni-Al ferrite; Nanocrystalline; Magnetic properties; Curie temperature; MAGNETIC-PROPERTIES;

D O I：

暂无

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Nanocrystalline Al-doped nickel ferrite NiAlFeO4 has been synthesized by sol-gel method. The X-ray diffraction (XRD) revealed that the powder obtained is single phase with spinel structure. Average crystallize size has been calculated by Scherrer's formula. The morphology of the sample was investigated by TEM and the mean particle size of the sample was obtained, which was 65 nm. Magnetic hysteresis loop was measured at room temperature with a maximum applied field of 3000 Oe. The Curie temperature (Tc) obtained by Faraday balance. The results show that magnetization decreases whit decreasing of particle size and Curie temperature increases. The magnetization of the sample is lower than the bulk one. The reduction of magnetization compared to bulk one is a consequence of surface spin disorder. The Curie temperature of the powder was determined using a Faraday balance and the result shows that the Curie temperature of the sample is higher than the bulk counterpart. [Z. Abooalizadeh, Y. Arabnia, S. Tabrizi, A. Taherkhani. A comparison between Curie temperature of nano and bulk Al doped nickel ferrite (NiAlFeO4). Life Sci J 2012;9(3):1221-1225]. (ISSN: 1097-8135). http://www.lifesciencesite.com. 173

引用

页码：1221 / 1225

页数：5