Testing of Magnetic Properties of Amorphous and Nanocrystalline Alloys under Out-of-Plane Stress over a Wide Frequency Range

Changgeng Zhang · Guochen Niu · Wenbin Meng · Yongjian Li
Journal of Magnetism and Magnetic Materials (2025).
DOI: 10.1016/j.jmmm.2025.173013

---

Abstract

Nanocrystalline and amorphous alloys are extensively utilized as core materials in devices such as motors and transformers. Their magnetic properties can be altered by stress, significantly impacting the operational efficiency and reliability of electrical equipment. In this study, a wide-frequency-range magnetic property testing system capable of applying out-of-plane stress is designed. The design of the stress application components and the uniformity of stress distribution in the samples are thoroughly analyzed through simulations. This system is used to measure the changes in the magnetic properties of nanocrystalline and amorphous alloy sheets under out-of-plane stress over a wide frequency range. The test results indicate that:

• Nanocrystalline alloys:
  Out-of-plane stress leads to an increase in core loss across the entire tested frequency band.

• Amorphous alloys:
  Core loss initially decreases under moderate stress but begins to rise again once the excitation frequency exceeds the kilohertz range.

---

Keywords

• Nanocrystalline alloys
• Amorphous alloys
• Core loss
• Out-of-plane stress
• Wide frequency range
• Magnetic properties

---

Links

• Full text access: https://doi.org/10.1016/j.jmmm.2025.173013
• Get rights and content: https://www.elsevier.com/journals/journal-of-magnetism-and-magnetic-materials/0304-8853/guide-for-authors
• Add to Mendeley: https://www.mendeley.com/import?doi=10.1016/j.jmmm.2025.173013