Published September 8, 2023 | Version v1

Micromagnetic study of the impact of grain boundaries on coercivity

  • 1. Department for Integrated Sensor Systems University for Continuing Education Krems Viktor Kaplan Str. 2 E, 2700 Wiener Neustadt, Austria

Description

The crystal structure, ferromagnetic properties, and thickness of grain boundaries separating the grains of a Nd2Fe14B-type permanent magnet significantly influence the figures of merit such as coercivity, remanence or the energy density product BHmax. Grain boundaries act as anisotropy defects. We use micromagnetic simulations to quantify the influence of those on coercivity/knee field.

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20230908_Fischbacher et al._REPM.pdf

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Additional details

Funding

European Commission
REESilience - Resilient and sustainable critical raw materials REE supply chains for the e-mobility and renewable energy ecosystems and strategic sectors 101058598