Electric-Field-Induced Charge-Transfer Phase Transition: A Promising Approach Toward Electrically Switchable Devices
Much research was directed toward the development of elec. switchable optical materials for applications in memory and display devices. Exptl. evidence is presented for an elec.-field-induced charge-transfer phase transition in 2 cyanometalate complexes: Rb0.8Mn[Fe(CN)6]0.93·1.62H2O and Co3[W(CN)8]2(pyrimidine)4·6H2O, involving changes in their magnetic, optical, and electronic properties as well. Application of an elec. field above a threshold value and within the thermal hysteresis region leads to a transition from the high- to the low-temperature phase in these compounds A model is proposed to explain the main observations from a para-ferroelec. transition. Probably this new concept of elec. switching, based on materials exhibiting charge-transfer phase transitions with large thermal hysteresis loops, may open up doors for novel electrooptical devices.
Références
- Titre
- Electric-Field-Induced Charge-Transfer Phase Transition: A Promising Approach Toward Electrically Switchable Devices
- Type de publication
- Article de revue
- Année de publication
- 2009
- Auteurs
- Mahfoud, Tarik, Molnar Gabor, Bonhommeau Sebastien, Cobo Saioa, Salmon Lionel, Demont Philippe, Tokoro Hiroko, Ohkoshi Shin-Ichi, Boukheddaden Kamel, and Bousseksou Azzedine
- Revue
- J. Am. Chem. Soc.
- Volume
- 131
- Pagination
- 15049–15054
- ISSN
- 0002-7863
Soumis le 26 juin 2018