Magneto‐Plasmonic System Consisting of Hydrogen Reactive Magnetic Layer for Hydrogen Gas Detection

Key Points

• The research aims to develop a magneto-plasmonic sensor for effective hydrogen gas detection.
• Proposed a system using [Pt/CoPt/Pt]/Ag stacked films.
• Investigated the magneto-optical activities of the layers.
• Evaluated the hydrogen response of the sensor elements.
• The system demonstrated significant hydrogen responses.
• Responses were attributed to the properties of the [Pt/CoPt/Pt] layer.