Mossbauer evaluation of cobalt ferrite nanoparticles synthesized by forced hydrolysis

被引：26

作者：

Hamdeh, HH ^{[1
]}

Hikal, WM

Taher, SM

Ho, JC

Thuy, NP

Quy, OK

Hanh, N

机构：

[1] Wichita State Univ, Dept Phys, Wichita, KS 67226 USA

[2] Int Training Inst Mat Sci, Hanoi, Vietnam

[3] Hanoi Univ Technol, Hanoi, Vietnam

来源：

JOURNAL OF APPLIED PHYSICS | 2005年 / 97卷 / 06期

关键词：

D O I：

10.1063/1.1856219

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spinel cobalt ferrite in the form of nearly spherical particles, having a narrow range of particle size around 7.6 nm, was produced by forced hydrolysis. Between the magnetization blocking temperature of 180 K and the Mossbauer blocking temperature of 270 K, the magnetic anisotropy energy decreases rapidly with temperature. The occupancy of the octahedral sites by only half of the Co2+ cations may have weakened the crystalline anisotropy. Significant spin canting was also observed at these sites. (C) 2005 American Institute of Physics.

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页数：4

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