Related Experiment Video
Updated: Apr 23, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Mechanistic Insights into Magnetic Field-Induced OER Enhancement via Magnetization Cycle Analysis
Weiyuan Chen1, Yu Xia1, Boqing Tao1
1School of Physics and Optoelectronics, South China University of Technology, Wushan Road 381, 510640 Guangzhou, China.
Abstract:
Disentangling non-spin-dependent and spin-dependent contributions to magnetic field-induced oxygen evolution reaction (OER) enhancement remains challenging due to the difficulty in quantifying magnetic flux density near catalytic surfaces, which depends on both the applied field and the intrinsic magnetic properties of the catalyst. Herein, 2:17-type samarium-cobalt magnets (Sm2Co17) with different initial magnetization states were evaluated in an electromagnet-integrated flow cell, employing magnetization cycle analysis to elucidate how intrinsic magnetic properties and magnetization state influence OER enhancement. Analysis of the potential shift (ΔE) throughout a complete magnetization cycle reveals butterfly shaped hysteresis, with characteristic loop features providing mechanistic insights. Bulk magnetic properties influence the loop contour via spin-pinning effects, whereas surface composition and magnetization state govern the linear ΔE shifts. The slope (κ) of the linear ΔE shifts serves as a descriptor of the catalytic surface response to magnetic field, enabling ΔE determination at a given field strength. Together, κ and the butterfly-shaped loop characteristics provide a potential analytical framework for quantifying magnetic field-induced OER enhancement and may offer insights into the magnetic properties of catalytic surfaces that emerge exclusively under OER conditions.
More Related Videos
07:42Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
Published on: July 20, 2022
06:53Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Related Concept Videos
Magnetic Fields
A magnetic field is defined by the force that a charged particle experiences...
Ferromagnetism
Potential Due to a Magnetized Object
The vector...
Motional Emf
Magnetic Damping
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
Torque On A Current Loop In A Magnetic Field
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...