Bradley T Flinn, Graham A Rance, William J Cull, Ian Cardillo-Zallo, Jem Pitcairn, Matthew J Cliffe, Michael W Fay, Ashley J Tyler, Benjamin L Weare, Craig T Stoppiello, E Stephen Davies, Melissa L Mather, Andrei N Khlobystov
Room-temperature magnetically switchable materials play a vital role in current and upcoming quantum technologies, such as spintronics, molecular switches, and data storage devices. The increasing miniaturization of device architectures produces a need to develop analytical tools capable of precisely probing spin information at the single-particle level. In this work, we demonstrate a methodology using negatively charged nitrogen vacancies (NV- ) in fluorescent nanodiamond (FND) particles to probe the magnetic switching of a spin crossover (SCO) metal-organic framework (MOF), [Fe(1,6-naphthyridine)2 (Ag(CN)2 )2 ] material ( 1 ), and a single-molecule photomagnet [X(18-crown-6)(H2 O)3 ]Fe(CN)6 ·2H2 O, where X = Eu and Dy (materials 2a and 2b , respectively), in response to heat, light, and electron beam exposure...
February 21, 2024: ACS Nano