单畴Ni球观测及NicoreNiOshell的铁磁/反铁磁耦合研究

刘先松; 章成文; 周圣强; 尹萍; Udi Meridor; Aviad Frydman; Aharon Gedanken

doi:10.11858/gywlxb.2006.02.014

单畴Ni球观测及NicoreNiOshell的铁磁/反铁磁耦合研究

doi: 10.11858/gywlxb.2006.02.014

1.
安徽省信息材料与器件重点实验室，安徽大学物理与材料学院，安徽合肥 230039；
2.
The Physics Department and the Minerva Center, Bar-Ilan University, Ramat Gan 52900, Israel;
3.
Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel

详细信息

通讯作者:
刘先松

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出版历程
- 收稿日期: 2004-11-18
- 修回日期: 2005-01-13
- 发布日期: 2006-06-05

Single-Domain Nanosphere Observation and Ferromagnetic/Antiferromagnetic Coupling of Ni/NiO

1.
Anhui Key Laboratory of Information Materials & Devices, School of Physics & Materials Science, Anhui University, Hefei 230093, China;
2.
The Physics Department and the Minerva Center, Bar-Ilan University, Ramat Gan 52900, Israel;
3.
Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel

More Information

Corresponding author: LIU Xian-Song

摘要

摘要: 使用微波辅助聚合方法制备了单分散单畴Ni纳米球，由MFM发现，尺度分布在100～180 nm的Ni球的一个相关特征是条型磁畴结构。用XRD、TEM、XPS以及EDAX测量了由Ni球进一步制备的NicoreNiOshell高度球型纳米结构。用VSM 和SQUID进一步讨论了其铁磁/反铁磁界面耦合效应，估算了交换耦合场与粒子尺寸的关系。
- 单分散单畴Ni纳米颗粒 /
- NicoreNiOshell结构 /
- 铁磁/反铁磁界面耦合
Abstract: Magnetic force microscopy (MFM) measurements were performed on monodispersed single-domain nickel nanospheres fabricated by the microwave-assisted (MW) polyol method. As found by MFM, a relevant characteristic of these spheres with a size distribution in the 100~180 nm range is the magnetic stripe domain structure. The obtained highly globular nanostructures of NicoreNiOshell were measured by XRD, TEM, XPS, and EDAX. The ferromagnet/antiferromagnet interface coupling is discussed with the results of VSM and SQUID. The relation of the exchange-coupling field with particles sizes is evaluated.
- monodispersed single-domain nickel nanospheres /
- NicoreNiOshell /
- ferromagnet/antiferromagnet interface coupling

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