青岛科技大学主页平台管理系统 chenkezheng--Home-- Controllable superferromagnetism-induced exchange bias effect in goethite microparticles after zero-field-cooling process

陈克正

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Supervisor of Doctorate Candidates

Supervisor of Master's Candidates

Date of Birth:1965-10-27

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Controllable superferromagnetism-induced exchange bias effect in goethite microparticles after zero-field-cooling process

Release time:2021-03-15 Hits:

Abstract:In this study, goethite microparticles (1.5-5 mu m in diameter) were used to investigate the abnormal exchange bias effect after zero-field cooling process. It was found that the superferromagnetic mechanism, which is of great relevance for the superparamagnetic hematite impurities, was the root cause of such exchange-bias effect. Most notably, one can readily control this effect by simply regulating the reaction time during synthesis. It is anticipated that this controllable and intriguing superferromagnetism-induced exchange-bias effect may not only open a new direction to re-examine the conventional exchange-bias mechanism but also has practical applications in magnetic tunnel junctions and high-density memories. (C) 2016 AIP Publishing LLC.

Volume:119

Issue:7

Translation or Not:no

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