Reversible control of the magnetization of spinel ferrites based electrodes by lithium-ion migration

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ID: 66540
2017
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Abstract
Abstract Lithium-ion (Li-ion) batteries based on spinel transition-metal oxide electrodes have exhibited excellent electrochemical performance. The reversible intercalation/deintercalation of Li-ions in spinel materials enables not only energy storage but also nondestructive control of the electrodes’ physical properties. This feature will benefit the fabrication of novel Li-ion controlled electronic devices. In this work, reversible control of ferromagnetism was realized by the guided motion of Li-ions in MnFe2O4 and γ-Fe2O3 utilizing miniature lithium-battery devices. The in-situ characterization of magnetization during the Li-ion intercalation/deintercalation process was conducted, and a reversible variation of saturation magnetization over 10% was observed in both these materials. The experimental conditions and material parameters for the control of the ferromagnetism are investigated, and the mechanism related to the magnetic ions’ migration and the exchange coupling evolution during this process was proposed. The different valence states of tetrahedral metal ions were suggested to be responsible for the different performance of these two spinel materials.
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wei2017reversiblescientific Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wei, Guodong;Wei, Lin;Wang, Dong;Chen, Yanxue;Tian, Yufeng;Yan, Shishen;Mei, Liangmo;Jiao, Jun;
Journal Scientific reports
Year 2017
DOI
DOI not found
URL
http://link.springer.com/article/10.1038/s41598-017-12948-6
Keywords
Medicine Chemical technology Mechanical engineering and machinery Science

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