Ensembles of γ-Fe2O3 nanoparticles formed during devitrification of borate glasses

被引：2

作者：

Ivanova, O. S. ^{[1
]}

Edelman, I. S. ^{[1
]}

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

Petrakovskaja, E. A. ^{[1
]}

Velikanov, D. A. ^{[1
]}

Trofimova, N. N. ^{[2
]}

Zubavichus, Y. V. ^{[2
]}

机构：

[1] SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

[2] NRC Kurchatov Inst, Moscow 123182, Russia

来源：

TRENDS IN MAGNETISM: NANOMAGNETISM | 2014年 / 215卷

关键词：

Magnetic nanoparticles; gamma-Fe2O3; magneto-optical properties; FARADAY-ROTATION; RESONANCE;

D O I：

10.4028/www.scientific.net/SSP.215.173

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Structural, magnetic and magneto-optical properties of borate glasses co-doped with Fe and the lager radius ions are presented. Maghemite, gamma-Fe2O3, nanoparticles arise in the glasses as a result of their thermal treatment in different regimes. Magnetization FC and ZFC temperature dependences demonstrate the superparamagnetic behavior of the particles with the blocking temperature below the room temperature. The EMR spectra measurements revealed a significant anisotropy with a large contribution of the nanoparticles' surface anisotropy. The FR maximum centered near 700 nm is a characteristic feature of the investigated glasses.

引用

页码：173 / 178

页数：6

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