The experiments will concentrate on the following objectives and activities, oriented towards the study of the thermal, optical and pressure induced bistability:

(OE1) The study of thermal spin transition in various environments

(AE1.1) Magnetic measurements of the hysteresis cycle during thermal transition and comparison of data with those in the case of free nanoparticles (these data are available for some compounds).

(AE1.2) Optical measurements of the thermal transition; finding differences from magnetic data.

(AE1.3) Measurements of the minor cycles and FORCs (First Order Reversal Curves): finding experimental FORC distributions

(OE2) The study of light on the spin transition particles

(AE2.1) Finding the best photoexcitation conditions (temperature, material amount) for photomagnetic and optical measurements

(AE2.2) Relaxation and photoexcitation measurements and comparison of data with free particles

(AE2.3) Study of the light induced thermal hysteresis and comparing the FORC distributions with those in the thermal hysteresis

(OE3) Study of combined effects of external and environmental pressure on spin transition micro and nano particles and the study of pressure hysteresis

(AE3.1) Measuring the thermal hysteresis as a function of pressure using pressure cell in SQUID

(OE4) Study of influence of spin crossover microparticles on the piezoelectric environment

(AE4.1) Conductivity measurements as a function of the spin state using specific SQUID module

Theoretical objectives will consist in modelling experimental data for samples embedded in polymers or disposed in core-shell structures.

(OT1) Analysis using Ising-like model and mean field model

(AT1.1) Use of the mean field model for finding the activation energy, enthalpy and entropy difference between the two states

(AT1.2) Application of the Ising-like model for finding the interaction parameters (both activities will be cyclically realized a function of experiments (see GAND diagram from Methodology).

(OT2) Application of the mechanoelastic model (using parameters from OT1)

(AT2.1) The study of environmental effects on nano and microstructures

(AT2.2) The study of interaction propagation as a function of elastic constants of the environment

(AT2.3) The study of the influence of spin transition particles from the shell on the inside piezoelectric material in core-shell structures.

(OM) Besides scientific objectives, a permanent objective will be the project management (acquiring new devices and consumables, opportune stages and conferences etc.).

MODx - Mollio