SPIN CHANGE PARENT COMPOUND, AND DEVICE PROVIDED WITH MEANS FOR WRITING, STORING AND ERASING, HAVING ACTIVITY MEDIUM CONTAINING AT LEAST ONE SAID COMPOUND

摘要

Chemical cpds. capable of undergoing spin transitions, in the form of a powder, including a lattice with a mol. formed from a complex in which Fe (Fe(II)) is associated with a 1.2.4-triazole (H-Trz) ligand of formula: the mol. also comprising an anion (A)2 chosen from BF4<->, ClO4<->, Br<-> and CO3<2->, this mol. having the formula (a) Fe(II) (H-Trz)3(BF4<->)2, (b) Fe(II)(H-Trz)3(ClO4<->)2, (c) Fe(II) (H-Trz)3(Br<->)2, (d) Fe(II) (H-Trz)3(Cl<->)2 or (e) Fe(II) (H-Trz)3(ClO3<2->) depending on the anion.