Exploring the effects of synthetic and postsynthetic grinding on the properties of the spin crossover material [Fe(atrz)3](BF4)2 (atrz = 4-amino-4h-1,2,4-triazole)

DOI: 10.3390/magnetochemistry6030044

Authors: Jed H. Askew (University of Kent) , David M. Pickup (University of Kent) , Gareth O. Lloyd (University of Lincoln) , Alan V. Chadwick (University of Kent) , Helena J. Shepherd (University of Kent)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Magnetochemistry , VOL 6

State: Published (Approved)
Published: September 2020
Diamond Proposal Number(s): 14239

Abstract: The effects of mechanochemical synthesis and postsynthetic grinding on the spin crossover material [Fe(atrz)3](BF4)2 was examined in detail using a combination of X-ray diffraction, magnetometry, EXAFS and TEM. Mechanochemical synthesis yielded a different polymorph (β-phase) to the solution synthesised sample (α-phase), with a lower temperature spin crossover. Milling duration did not significantly affect this temperature but did result in the production of smaller nanoparticles with a narrower size distribution. It is also possible to convert from α- to the β-phase via postsynthetic grinding.

Journal Keywords: spin crossover; mechanochemistry

Subject Areas: Materials, Physics, Chemistry


Instruments: B18-Core EXAFS

Documents:
magnetochemistry-06-00044.pdf