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Meeting 2025 TMS Annual Meeting & Exhibition
Symposium Alloys and Compounds for Thermoelectric and Solar Cell Applications XIII
Presentation Title Study of the Thermoelectric Properties of MnFe2O4 Thin Films Prepared by Pulsed Laser Deposition
Author(s) Paolo Mele, Alberto Giribaldi, Anoop Divakaran, Giovanna Latronico, Hannes Rijckaert, Marco Antonio Lopez de la Torre, Kazumasa Iida, Tsunehiro Takeuchi, Cristina Artini
On-Site Speaker (Planned) Paolo Mele
Abstract Scope Oxides belonging to the spinel ferrite family MFe2O4 (M = Mn, Rh, Cr, Mo) have been theoretically investigated and identified as potentially high-performance thermoelectrics [1]. We fabricated MnFe2O4 films via PLD on silica substrates. All the films show n-type behavior. The preferred growth orientation is along the (311) crystallographic direction. Crystallinity and grain size improve with the increase of the deposition temperature up to 700 °C. The thin film deposited at 700 °C showed ultra-high room-temperature absolute value of the Seebeck coefficient S = 665 μV/K, apparently confirming the computational predictions. However, measurements at increasing temperature performed in a vacuum changed the scenario and maximum absolute value of S dropped to 175 μV/K. Annealing under different conditions was conducted to investigate this behavior. The results will be discussed at the conference. [1] M. H. N. Assadi, J. Gutiérrez Moreno, M. Fronzi, ACS Appl. Energy Mater. 2020, 3, 5666
Proceedings Inclusion? Planned:
Keywords Thin Films and Interfaces, Nanotechnology, Other

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