Increasing the magnetisation of electrolessly deposited Ni-B nanotubes

D. Richardson, F. M. Rhen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Magnetic nanotubes have a wide variety of potential applications in modern technologies in areas such as energy conversion, electronic devices and high density memory storage [1]. Recently using electroless deposition, we have established a method to prepare continuous nanotubes 20 μm in length with external diameter of 400 nm and uniform wall thickness of 100 nm [2]. The electroless process requires the use of a reducing agent, which favors the incorporation of an alloying element. In this study, we use dimethylamineborane (DMAB) as a reducing agent, resulting in the co-deposition of Ni and B, thereby forming Ni-B alloys [3]. As the deposits contain boron, the specific magnetization is lower compared to pure Ni. Here, we investigate the dependence of magnetic properties of Ni-B nanotubes on deposition bath pH and annealing temperature. We show that the specific magnetization of Ni-B nanotubes increases after annealing due to crystallization of amorphous nanotubes, while the nanotube structure is still preserved at high temperatures. Our results are analyzed in comparison to bulk Ni metal with specific magnetization of 55.4 JT-1Kg-1.

Original languageEnglish
Title of host publication2015 IEEE International Magnetics Conference, INTERMAG 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479973224
DOIs
Publication statusPublished - 14 Jul 2015
Event2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China
Duration: 11 May 201515 May 2015

Publication series

Name2015 IEEE International Magnetics Conference, INTERMAG 2015

Conference

Conference2015 IEEE International Magnetics Conference, INTERMAG 2015
Country/TerritoryChina
CityBeijing
Period11/05/1515/05/15

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