The synthesis and magnetic properties of monodispersed single-domain nickel nanospheres and highly globular nanostructures of NicoreNiOshell

被引：15

作者：

Liu, XS

Meridor, U

Zhao, P

Song, GB

Frydman, A

Gedanken, A ^{[1
]}

机构：

[1] Bar Ilan Univ, Ctr Adv Mat & Nanotechnol, Dept Chem, IL-52900 Ramat Gan, Israel

[2] Bar Ilan Univ, Ctr Adv Mat & Nanotechnol, Kanbar Lab Nanomat, IL-52900 Ramat Gan, Israel

[3] Anhui Univ, Sch Phys & Mat Sci, Anhui Key Lab Informat Mat & Devices, Hefei 230093, Peoples R China

[4] Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel

[5] Bar Ilan Univ, Minerva Ctr, IL-52900 Ramat Gan, Israel

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2006年 / 301卷 / 01期

关键词：

core-shell structures; polyol reaction; magnetic properties;

D O I：

10.1016/j.jmmm.2005.06.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Monodispersed single-domain nickel nanospheres have been successfully prepared by the microwave-assisted (MW) polyol method. TEM and AFM analysis reveal that the nickel nanospheres have a size distribution in the 100-180 nm range. Highly globular nanostructures of NicoreNiOshell are achieved by oxidizing the nickel nanospheres in a flow of H2O2 and the structure is studied by means of TEM, XPS, and EDAX. The single-domain magnetic structure is confirmed by MFM measurements and the ferromagnetic properties are demonstrated by VSM and SQUID studies. Surprisingly, no shift in the magnetization loop is observed despite the ferromagnet/antiferromagnet interface. This is attributed to the relatively large volume of our nanoparticles. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：13 / 21

页数：9

共 64 条

[1] Nickel nanoparticles supported on silica of low surface area. Hydrogen chemisorption and TPD and catalytic properties [J].