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Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
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Cooperation and competition between magnetism and chemisorption.
Satadeep Bhattacharjee1, Seung-Cheol Lee1
1Indo-Korea Science and Technology Center (IKST), Bangalore 560065, India. s.bhattacharjee@ikst.res.in seungcheol.lee@ikst.res.in.
Physical Chemistry Chemical Physics : PCCP
|February 3, 2021
Summary
Chemisorption on magnetic surfaces influences adsorption energy and surface magnetic moments. This study explores how adsorbates affect magnetism, revealing potential scaling relationships for adsorption energy.
Area of Science:
- Surface Science
- Condensed Matter Physics
- Quantum Chemistry
Background:
- Chemisorption phenomena on surfaces are crucial for catalysis and materials science.
- Understanding the interplay between adsorbates and surface magnetism is key to developing novel magnetic materials.
Purpose of the Study:
- To investigate chemisorption on ferromagnetic and non-magnetic surfaces using theoretical models.
- To formulate adsorption energy in relation to surface magnetic moments.
- To explore the conditions for induced magnetism on non-magnetic surfaces via chemisorption.
Main Methods:
- Application of the Newns-Anderson-Grimley model for chemisorption.
- Incorporation of the Stoner model for ferromagnetism.
- Formulation of adsorption energy based on changes in surface magnetic moments.
Main Results:
- A potential scaling relationship between adsorption energy and surface magnetic moments was identified.
- The study quantifies how adsorption alters surface magnetic moments.
- A modified Stoner criterion was developed for non-magnetic surfaces.
Conclusions:
- Chemisorption significantly impacts surface magnetic properties.
- The binding strength of adsorbates is directly linked to surface magnetic moments.
- Chemisorption can induce magnetism on initially non-magnetic surfaces.
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