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Longitudinal Spin Seebeck Effect Thermopiles Based on Flexible Co-Rich Amorphous Ribbons/Pt Thin-Film
Marcio A Correa1,2, Andrey V Svalov3, Armando Ferreira2,4
1Departamento de Física, Universidade Federal do Rio Grande do Norte, Natal 59078-900, RN, Brazil.
Sensors (Basel, Switzerland)
|September 28, 2023
Summary
Platinum enhances thermoelectric effects in flexible Co/Pt heterostructures for renewable energy sensors. A novel thermopile design based on the Longitudinal Spin Seebeck Effect (LSSE) achieves comparable performance to rigid systems.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Renewable Energy Technologies
Background:
- Thermoelectric phenomena, including the Anomalous Nernst Effect and Longitudinal Spin Seebeck Effect (LSSE), are crucial for energy harvesting and sensor applications.
- Flexible electronic materials are increasingly in demand for integration into devices with complex geometries, particularly in the renewable energy sector.
- Enhancing thermoelectric response in flexible heterostructures is key to developing advanced, adaptable energy solutions.
Purpose of the Study:
- To investigate the role of platinum (Pt) in enhancing the thermoelectric response of cobalt (Co)-rich ribbon/Pt heterostructures.
- To demonstrate the effectiveness of a thermopile configuration in boosting thermoelectric current in these flexible systems.
- To design and validate a flexible thermopile based on LSSE without requiring lithography.
Main Methods:
- Fabrication of Co-rich ribbon/Pt heterostructures.
- Characterization of thermoelectric properties, focusing on spin-to-charge conversion mechanisms.
- Implementation and testing of a thermopile configuration to measure induced thermoelectric current and electric resistance.
- Comparison of flexible heterostructure performance with existing literature data for rigid systems.
Main Results:
- Platinum significantly enhances the thermoelectric response in Co/Pt heterostructures, attributed to efficient spin-to-charge conversion.
- The thermopile configuration markedly increases the induced thermoelectric current due to a substantial reduction in electric resistance.
- A flexible thermopile based on LSSE was successfully designed without lithography, exhibiting thermoelectric voltage comparable to rigid systems.
Conclusions:
- Pt plays a critical role in promoting thermoelectric performance in flexible Co/Pt heterostructures via spin-to-charge conversion.
- The thermopile configuration is an effective strategy for amplifying thermoelectric output in these flexible materials.
- The developed flexible LSSE thermopile offers a promising, lithography-free alternative for advanced sensor applications in renewable energy.
Keywords:
anomalous Nernst effectflexible magnetic materialsmagnetic propertiesmagnetic sensorsspintronicsthermoelectric conversionMore Related Videos
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