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Light-induced phase separation in the [Fe(ptz)6](BF4)2 spin-crossover single crystal

Varret, F.
Boukheddaden, K.
Chong, C.
Goujon, A.
Gillon, B.
Published in Europhysics Letters. 2007, vol. 77, no. 3, p. 30007
Abstract We present novel insight on like-spin domains (LSD) in cooperative spin transition solids by following the photo-transformation and the subsequent relaxation of a [ Fe(ptz)6] (BF4)2 single crystal in the vicinity of the light-induced instability. Self-organization under light is observed, accompanied by Barkhausen-like noise and jumps which reveal the presence of elastic interactions between LSDs. The light-induced phase separation process is discussed in terms of a dynamic potential providing spinodal instability in the corresponding temperature range. This useful concept is applicable to all types of switchable molecular solids.
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Research group Groupe Hauser
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VARRET, F. et al. Light-induced phase separation in the [Fe(ptz)6](BF4)2 spin-crossover single crystal. In: Europhysics Letters, 2007, vol. 77, n° 3, p. 30007. https://archive-ouverte.unige.ch/unige:3601

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Deposited on : 2009-10-02

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