Size effect in spin-crossover systems investigated by FORC measurements, for surfacted [Fe(NH2-trz)3](Br)2·3H2O nanoparticles: reversible contributions and critical size

Nanoparticles of [Fe(NH2-trz)3]Br2⋅3 H2O

Nanoparticles of [Fe(NH2-trz)3]Br2⋅3 H2O (NH2-trz=2-Amino-1,2,4-triazole) Prepared by the Reverse Micelle Technique: Influence of Particle and Coherent Domain Sizes on Spin-Crossover Properties

✍ Thibaut Forestier; Abdellah Kaiba; Stanislav Pechev; Dominique Denux; Philippe G 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 854 KB

## Abstract By changing the surfactant/water ratio, nanoparticles of the iron(II) spin crossover material, [Fe(NH~2~‐trz)~3~]Br~2~⋅3 H~2~O (with NH~2~‐trz=4‐amino‐1,2,4‐triazole), have been synthesised from 1 μm down to 30 nm (see figure). Magnetic and reflectivity experiments indicate that the cri