Rafael Oliveira Fleming
Tailoring Negative Thermal Expansion via Tunable Induced Strain in La–Fe–Si-Based Multifunctional Material
Fleming, Rafael Oliveira; Gonçalves, Sofia; Davarpanah, Amin; Radulov, Iliya; Pfeuffer, Lukas; Beckmann, Benedikt; Skokov, Konstantin; Ren, Yang; Li, Tianyi; Evans, John; Amaral, João; Almeida, Rafael; Lopes, Armandina; Oliveira, Gonçalo; Araújo, João Pedro; Apolinário, Arlete; Belo, João Horta
Authors
Sofia Gonçalves
Amin Davarpanah
Iliya Radulov
Lukas Pfeuffer
Benedikt Beckmann
Konstantin Skokov
Yang Ren
Tianyi Li
Professor John Evans john.evans@durham.ac.uk
Professor
João Amaral
Rafael Almeida
Armandina Lopes
Gonçalo Oliveira
João Pedro Araújo
Arlete Apolinário
João Horta Belo
Abstract
Zero thermal expansion (ZTE) composites are typically designed by combining positive thermal expansion (PTE) with negative thermal expansion (NTE) materials acting as compensators and have many diverse applications, including in high-precision instrumentation and biomedical devices. La(Fe1–x,Six)13-based compounds display several remarkable properties, such as giant magnetocaloric effect and very large NTE at room temperature. Both are linked via strong magnetovolume coupling, which leads to sharp magnetic and volume changes occurring simultaneously across first-order phase transitions; the abrupt nature of these changes makes them unsuitable as thermal expansion compensators. To make these materials more useful practically, the mechanisms controlling the temperature over which this transition occurs and the magnitude of contraction need to be controlled. In this work, ball-milling was used to decrease particles and crystallite sizes and increase the strain in LaFe11.9Mn0.27Si1.29Hx alloys. Such size and strain tuning effectively broadened the temperature over which this transition occurs. The material’s NTE operational temperature window was expanded, and its peak was suppressed by up to 85%. This work demonstrates that induced strain is the key mechanism controlling these materials’ phase transitions. This allows the optimization of their thermal expansion toward room-temperature ZTE applications.
Citation
Fleming, R. O., Gonçalves, S., Davarpanah, A., Radulov, I., Pfeuffer, L., Beckmann, B., Skokov, K., Ren, Y., Li, T., Evans, J., Amaral, J., Almeida, R., Lopes, A., Oliveira, G., Araújo, J. P., Apolinário, A., & Belo, J. H. (2022). Tailoring Negative Thermal Expansion via Tunable Induced Strain in La–Fe–Si-Based Multifunctional Material. ACS Applied Materials and Interfaces, 14(38), 43498-43507. https://doi.org/10.1021/acsami.2c11586
Journal Article Type | Article |
---|---|
Acceptance Date | Aug 29, 2022 |
Online Publication Date | Sep 13, 2022 |
Publication Date | Sep 28, 2022 |
Deposit Date | Dec 20, 2022 |
Publicly Available Date | Sep 14, 2023 |
Journal | ACS Applied Materials & Interfaces |
Print ISSN | 1944-8244 |
Electronic ISSN | 1944-8252 |
Publisher | American Chemical Society |
Peer Reviewed | Peer Reviewed |
Volume | 14 |
Issue | 38 |
Pages | 43498-43507 |
DOI | https://doi.org/10.1021/acsami.2c11586 |
Public URL | https://durham-repository.worktribe.com/output/1183167 |
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Copyright Statement
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © 2022 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsami.2c11586
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