• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Institut de Mécanique et d’Ingénierie de Bordeaux (I2M)
  • View Item
  • Home
  • Institut de Mécanique et d’Ingénierie de Bordeaux (I2M)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Spin crossover molecular ceramics by Cool-SPS: consequences on switching features beyond the sole microstructural effect

Article dans une revue avec comité de lecture
Author
EL-KHOURY, Liza
525101 Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
DARO, Nathalie
525101 Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
ccCHASTANET, Guillaume
525101 Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
ccROSA, Patrick
525101 Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
DENUX, Dominique
525101 Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
ccETIENNE, Laetitia
525101 Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
ccMAZEL, Vincent
1002421 Institut de Mécanique et d'Ingénierie [I2M]
ccJOSSE, Michaël
525101 Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
ccMARCHIVIE, Mathieu
525101 Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

URI
http://hdl.handle.net/10985/24902
DOI
10.1039/D3MA00688C
Date
2024
Journal
Materials Advances

Abstract

The sintering of spin crossover material using Spark Plasma Sintering at low temperature (Cool-SPS) lead to a new way of shaping such compounds into functional molecular ceramics. These ceramics reach a high relative density of 95%, what may address several issues for using spin crossover materials into barocaloric devices. Starting from the reference complex [Fe(Htrz)2(trz)]BF4, we first investigated the magnetic, structural, microstructural properties as well as the fatigability behavior of the starting powder using multiple magnetic measurements, X-ray diffraction and calorimetry to compare them to the elaborated ceramics. The best conditions of pressure and temperature during the SPS process to obtain reproductible molecular ceramics with high relative density where found to be between 250 and 300 °C, and 300 and 400 MPa. The same complete set of characterizations made on a molecular ceramic of 95% of relative density reveal that crystal structure as well as the abrupt hysteretic SCO of [Fe(Htrz)2(trz)]BF4 are perfectly conserved after sintering. However, ceramic presents a faster stabilization of their microstructural and magnetic properties upon cycling and a higher cooperativity at the macroscopic level was observed compared to the starting powder.

Files in this item

Name:
I2M_MA_2023-El-KhouryL.pdf
Size:
3.451Mb
Format:
PDF
View/Open
CC BY
This document is available under CC BY license

Collections

  • Institut de Mécanique et d’Ingénierie de Bordeaux (I2M)

Related items

Showing items related by title, author, creator and subject.

  • Reuse of medical face masks in domestic and community settings without sacrificing safety: Ecological and economical lessons from the Covid-19 pandemic 
    Article dans une revue avec comité de lecture
    ALCARAZ, Jean-Pierre; LE COQ, Laurence; POURCHEZ, Jérémie; THOMAS, Dominique; CHAZELET, Sandrine; BOUDRY, Isabelle; BARBADO, Maud; SILVENT, Sophie; DESSALE, Claire; ANTOINE, Fabienne; GUIMIER-PINGAULT, Catherine; CORTELLA, Laurent; ROUIF, Sophie; BARDIN-MONNIER, Nathalie; CHARVET, Augustin; DUFAUD, Olivier; LECLERC, Lara; MONTIGAUD, Yoann; LAURENT, Coralie; VERHOEVEN, Paul; JOUBERT, Aurélie; BOUHANGUEL, Ala; ANDRES, Yves; GAFFÉ, Joël; MARTIN, Donald K.; HUET, Christophe; BOISSET, Sandrine; MAURIN, Max; RUMEAU, Pascal; CHARLOT, Frédéric; MOREAU-GAUDRY, Alexandre; BONNETERRE, Vincent; CINQUIN, Philippe; LANDELLE, Caroline; ccRICHAUD, Emmanuel (Elsevier, 2021)
    The need for personal protective equipment increased exponentially in response to the Covid-19 pandemic. To cope with the mask shortage during springtime 2020, a French consortium was created to find ways to reuse medical ...
  • Austenitic-to-austenitic-ferritic stainless steel transformation via PVD powder surface functionalization and spark plasma sintering 
    Article dans une revue avec comité de lecture
    ARDIGO-BESNARD, Maria-Rosa; BESNARD, Aurélien; ccPINOT, Yoann; BUSSIÈRE, Florian; CHATEAU-CORNU, J.-P.; VANDENABEELE, C.; LUCAS, S.; ccWATIEZ, Noé; DESCAMPS-MANDINE, Armel; JOSSE, Claudie; PROIETTI, Arnaud (Elsevier BV, 2024-03)
    The present work investigates a new alloy design approach to elaborate stainless steel grades with an austeniticferritic microstructure. The originality of the study is the use, as starting material, of a 316 L austenitic ...
  • Phase transformation mechanisms occurring during spark plasma sintering elaboration of new duplex composite stainless steels 
    Article dans une revue avec comité de lecture
    MVODO EBA, R.; ccARDIGO-BESNARD, Maria-Rosa; CHATEAU-CORNU, J.-P.; HERBST, F.; GEOFFROY, N.; BESNARD, Aurélien; VANDENABEELE, C.; LUCAS, S.; DESCAMPS-MANDINE, A.; JOSSE, C. (Elsevier BV, 2024-08-05)
    This study focuses on the elaboration of duplex stainless steels (DSS) from powder mixtures using spark plasma sintering (SPS). Different mass fractions of an austenitic 316L powder and a ferritic 410L one were blended and ...
  • UV-Robot supervision system design and development 
    Communication sans acte
    EL ZANT, Chawki; BETTAYEB, Belgacem; SAHNOUN, M'hammed; HAVARD, Vincent; ccKLEMENT, Nathalie (2018)
    Introducing the supervision system architecture of an agricultural robotic system enable the improved performance overcoming the complexity that current autonomous robots face due to the dynamic and unstructured agriculture ...
  • Investigation of subgrains in directionally solidified cast mono-seeded silicon and their interactions with twin boundaries 
    Article dans une revue avec comité de lecture
    BECKER, Maike; PIHAN, Etienne; GUITTONNEAU, Fabrice; REGULA, Gabrielle; OUADDAH, Hadjer; REINHART, Guillaume; MANGELINCK-NOËL, Nathalie; BARRALLIER, Laurent (2020)
    Directional solidification of a cast mono silicon seed and of a float-zone (FZ) silicon seed was performed and the grain and defect structures of the seeds as well as of the regrown parts are analyzed. In situ X-ray ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales