期刊
JOURNAL OF PHYSICS COMMUNICATIONS
卷 5, 期 4, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2399-6528/abee31
关键词
superspin-glass; fine particle; cooperative phenomena
资金
- JSPS KAKENHI [19H04400]
- JST-Mirai Program in Japan [JPMJMI18A3]
- Grants-in-Aid for Scientific Research [19H04400] Funding Source: KAKEN
Two conventional methods are applied to evaluate interparticle magnetic interactions in magnetic nanoparticle assemblies with different interparticle distances. The mean values of the interactions are relatively small and independent of the distance, indicating coexistence and cancellation of ferromagnetic-like and antiferromagnetic-like magnetic couplings.
Two conventional methods for evaluating interparticle magnetic interactions are applied to magnetic nanoparticle assemblies with various interparticle distances that are controlled by a silica coating. According to Weiss temperatures derived from superparamagnetic response analysis, the mean values of the interparticle magnetic interactions are relatively small and seem to be independent of the interparticle distance. The interaction fields in the first-order reversal curve diagram for narrow interparticle distances are widely distributed. However, the interaction fields disappear when the interparticle distance is sufficiently large. Analysis of these two contrasting results indicates that ferromagnetic-like and antiferromagnetic-like magnetic couplings coexist and cancel each other, as in atomic spin glasses.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据