Local probing of eddy current correlated with magnetic properties

Author:

Kang Jinho1ORCID,Sun Changhyo1ORCID,Kim Jungi1ORCID,You Jinyoung1ORCID,Jang Min-Sun2,Jeong Jae Won2ORCID,Heo Yooun3,Kim Yunseok14ORCID

Affiliation:

1. School of Advanced Materials and Engineering, Sungkyunkwan University (SKKU) 1 , Suwon 16419, Republic of Korea

2. Metal Powder Department, Korea Institute of Materials Science (KIMS) 2 , 797 Changwondae-ro, Seongsan-gu, Changwon 51508, Republic of Korea

3. Department of Physics, Inha University 3 , Incheon 22212, Republic of Korea

4. Research Center for Advanced Materials Technology, Core Research Institute 4 , Suwon 16419, Republic of Korea

Abstract

Recently, the development of long-range electric vehicles with effective electric motors has drawn considerable attention. The key to achieving such electric vehicles development is power saving, which has served as an essential motive for development of new magnetic materials. In this regard, further improvement of magnetic materials requires deep insight into the existence of eddy currents, which are primary contributors toward power loss in practical applications. Therefore, exploring the key effects of eddy currents on overall magnetic properties is essential. Here, we demonstrate clearly distinguished eddy current distributions being influenced by local magnetic properties via multidimensional magnetic force microscopy. Using our model systems, we explored the key role of an insulation layer and magnetic domains on eddy current dependent magnetic properties. In particular, we visualized the correlation between the eddy current and magnetic domain/domain wall. Therefore, our approach provides detailed characterization of eddy current, particularly related to the underlying contributions of local magnetic properties, offering crucial insights for improvement of electric motors.

Funder

National Research Foundation of Korea

Publisher

AIP Publishing

Subject

Physics and Astronomy (miscellaneous)

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