Issue 18, 2017

Vacuum deposition of high-quality thin films displaying spin transition near room temperature

Abstract

We report on [Fe(HB(tz)3)2] (tz = triazolyl) (1) thin films with thicknesses in the range of 20–200 nm, which were thermally evaporated on fused silica substrates. Using X-ray diffraction, Raman spectroscopy, UV spectrophotometry, magnetometry and atomic force microscopy, we show that the as-deposited amorphous films can be recrystallized by means of solvent–vapour annealing. The resulting crystalline films are dense, homogenous, highly oriented (with the orthorhombic c-axis normal to the substrate) and exhibit an abrupt and fully complete spin transition around 338 K for each film thickness. The films show stable morphology and spin crossover properties upon thermal cycling and also upon long-term storage in ambient air providing appealing prospects for possible applications in a range of nanoscale devices.

Graphical abstract: Vacuum deposition of high-quality thin films displaying spin transition near room temperature

Supplementary files

Article information

Article type
Paper
Submitted
08 Mar 2017
Accepted
05 Apr 2017
First published
05 Apr 2017

J. Mater. Chem. C, 2017,5, 4419-4425

Vacuum deposition of high-quality thin films displaying spin transition near room temperature

V. Shalabaeva, S. Rat, M. D. Manrique-Juarez, A. Bas, L. Vendier, L. Salmon, G. Molnár and A. Bousseksou, J. Mater. Chem. C, 2017, 5, 4419 DOI: 10.1039/C7TC00999B

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