TY - JOUR
T1 - Phase transition at 350 K in the Ti3 C2 Tx MXene: Possible sliding or moiré ferroelectricity
AU - Cordero, Francesco
AU - Pazniak, Hanna
AU - Ouisse, Thierry
AU - Gonzalez-Julian, Jesus
AU - Di Carlo, Aldo
AU - Soprunyuk, Viktor
AU - Schranz, Wilfried
N1 - Publisher Copyright:
© 2024 American Physical Society.
PY - 2024/1/1
Y1 - 2024/1/1
N2 - A phase transition is found in Ti3C2Tx MXene at 350 K, by measuring the complex Young's modulus of self-standing thick films. A steplike softening and increase of the mechanical losses is found below 350 K, indicative of a phase transition, where the square of the order parameter is coupled to strain. It is argued that it should be a ferroelectric transition, most likely of the sliding (moiré) type, due to charge transfer between facing flakes sliding with respect to each other. If the transition will be confirmed to be ferroelectric, Ti3C2Tx will be added to the class of metallic ferroelectrics and open new perspectives of applications, in addition to the numerous already studied.
AB - A phase transition is found in Ti3C2Tx MXene at 350 K, by measuring the complex Young's modulus of self-standing thick films. A steplike softening and increase of the mechanical losses is found below 350 K, indicative of a phase transition, where the square of the order parameter is coupled to strain. It is argued that it should be a ferroelectric transition, most likely of the sliding (moiré) type, due to charge transfer between facing flakes sliding with respect to each other. If the transition will be confirmed to be ferroelectric, Ti3C2Tx will be added to the class of metallic ferroelectrics and open new perspectives of applications, in addition to the numerous already studied.
UR - http://www.scopus.com/inward/record.url?scp=85182877745&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.109.024105
DO - 10.1103/PhysRevB.109.024105
M3 - Article
AN - SCOPUS:85182877745
SN - 2469-9950
VL - 109
JO - Physical Review B
JF - Physical Review B
IS - 2
M1 - 024105
ER -