Tailoring Negative Thermal Expansion via Tunable Induced Strain in La–Fe–Si-Based Multifunctional Material
Rafael Oliveira Fleming, Sofia Gonçalves, Amin Davarpanah, Iliya Radulov, Lukas Pfeuffer, Benedikt Beckmann, Konstantin Skokov, Yang Ren, Tianyi Li, John S. O. Evans, João S. Amaral, R. Almeida, A. M. L. Lopes, Gonçalo N. P. Oliveira, João P. Araújo, Arlete Apolinário, J.H. Belo
Abstract
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.
Topics & Concepts
Materials scienceNegative thermal expansionThermal expansionStrain (injury)ThermalSiliconComposite materialNanotechnologyOptoelectronicsThermodynamicsInternal medicinePhysicsMedicineThermal Expansion and Ionic ConductivityMagnetic and transport properties of perovskites and related materialsFerroelectric and Piezoelectric Materials