Acoustic Emissions from Spin Crossover Complexes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Materials Chemistry C Année : 2024

Acoustic Emissions from Spin Crossover Complexes

Résumé

Acoustic emission from the compounds [Fe(HB(tz)3)2] and [Fe(Htrz)(trz)2]BF4 was detected during the thermally induced spin transition and correlated with simultaneously recorded calorimetric signals. We ascribe this phenomenon to elastic waves produced by microstructural and volume changes accompanying the spin transition. Despite the perfect reversibility of the spin state switching (seen by the calorimeter), the acoustic emission activity decreases for successive thermal cycles, revealing thus irreversible microstructural evolution of the samples. The acoustic emission signal amplitude and energy probability distribution functions followed power-law behavior and the characteristic exponents were found similar for the two samples both on heating and cooling, indicating the universal character, which is further substantiated by the well scaled average temporal shapes of the avalanches.
Fichier principal
Vignette du fichier
Kamel, Acoustic Emissions, 2024.pdf (1.36 Mo) Télécharger le fichier
Origine : Publication financée par une institution
Licence : CC BY NC - Paternité - Pas d'utilisation commerciale

Dates et versions

hal-04529110 , version 1 (02-04-2024)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Sarah M Kamel, Lajos Daróczi, László Z Tóth, Dezső L Beke, Gerardo Gutiérrez Juárez, et al.. Acoustic Emissions from Spin Crossover Complexes. Journal of Materials Chemistry C, In press, ⟨10.1039/D4TC00495G⟩. ⟨hal-04529110⟩
4 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More