Lift-off effect in coercivity measurement on magnetic materials: a systematic literature review

Al-Fadzrul Azim Al-Fadhir and Fauziah Sulaiman and Saturi Baco (2024) Lift-off effect in coercivity measurement on magnetic materials: a systematic literature review.

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Abstract

Coercivity is the strength of the reverse magnetic field required to demagnetise a material after saturation which is a crucial indicator of the hardness of magnetic materials. However, errors in coercivity measurement known as the lift-off effect can be caused by air gaps. This paper investigates the literature on the gap between novel methods to tackle this issue. There was literature reporting that by integrating additional inductance measurements and developing a calibration method, it aim to mitigate the impact of air gaps. The rationale behind this calibration method is that changes in air gaps affect both coercivity and inductance measurements. Therefore, the need for a systematic literature review is crucial to synthesise empirical data on using or implementing these methods. This paper attempts to identify the trends and the focus in the field of study which is a key step in advancing our understanding of the topic. The study utilised the Science Direct, Scopus, and ProQuest based on the preferred reporting items for systematic reviews and meta-analyses (PRISMA). From the 136 documents that was fitted under the keywords - lift-off effect, coercivity measurement, magnetic materials and non-destructive testing from 2014 to 2024, only 17 original articles were published. The findings reveal that the United Kingdom is the dominant country in conducting reducing the lift-off effect on magnetic plates papers. Followed by The United States-Korea and finally is Poland. The research samples were also more focused on auxiliary inductance data, multifrequency induction data, testing of metallic spherical geometry, sensors based on their equivalent parameters, and using fibre optic Eddy current sensors to detect defects in the magnetic material. Therefore, this shows a clear gap between the present research and its future direction.

Item Type:	Proceedings
Keyword:	Coercivity measurement, Inductance measurement, Lift-off effect, Non-destructive testing, Magnetic material
Subjects:	Q Science > Q Science (General) > Q1-390 Science (General) T Technology > T Technology (General) > T1-995 Technology (General)
Department:	FACULTY > Faculty of Science and Natural Resources
Depositing User:	SITI AZIZAH BINTI IDRIS -
Date Deposited:	24 Mar 2025 12:37
Last Modified:	24 Mar 2025 12:37
URI:	https://eprints.ums.edu.my/id/eprint/43282

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