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Electric-field-induced charge-transfer phase transition: a promising approach toward electrically switchable devices

Mahfoud, Tarik and Molnar, Gabor and Bonhommeau, Sébastien and Cobo, Saioa and Salmon, Lionel and Demont, Philippe and Tokoro, Hiroko and Ohkoshi, Shin-Ichi and Boukheddaden, Kamel and Bousseksou, Azzedine Electric-field-induced charge-transfer phase transition: a promising approach toward electrically switchable devices. (2009) Journal of the American Chemical Society, 131 (41). 15049-15054. ISSN 0002-7863

(Document in English)

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Official URL: http://dx.doi.org/10.1021/ja9055855


Much research has been directed toward the development of electrically switchable optical materials for applications in memory and display devices. Here we present experimental evidence for an electric-field-induced charge-transfer phase transition in two 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 electric 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 on the basis of a para-ferroelectric transition. Our observations suggest that this new concept of electrical switching, based on materials exhibiting charge-transfer phase transitions with large thermal hysteresis loops, may open up doors for novel electro-optical devices.

Item Type:Article
Additional Information:Thanks to ACS editor. The original PDF can be found at Journal of the American Chemical Society website: http://pubs.acs.org/doi/abs/10.1021/ja9055855
HAL Id:hal-03474822
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Université Hassan II Mohammedia - Casablanca - UH2MC (MOROCCO)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université de Versailles Saint-Quentin-en-Yvelines -UVSQ (FRANCE)
Other partners > Institute for Nanomaterials and Nanotechnology - INANOTECH (MOROCCO)
Other partners > University of Tokyo (JAPAN)
Laboratory name:
Deposited On:04 Oct 2013 12:19

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