Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1800678 | Journal of Magnetism and Magnetic Materials | 2011 | 4 Pages |
The magnetic ionic liquids (MILs) are considered to open up a wide range of applications because of their magnetic and electrochromic switching. Until recently almost all magnetic ionic liquids containing tetrachloroferrate ion FeCl4− evidenced a paramagnetic temperature dependence of the magnetic susceptibility, with only small deviations from the Curie law at low temperatures. However, 1-ethyl-3-methylimidazolium tetrachloroferrate, Emim[FeCl4], clearly exhibits a long-range antiferromagnetic ordering below the Neel temperature TN≈3.8 K. In addition, the shape of the magnetic ordering depends on the cooling speed, indicating that the magnetic coupling could be modified.
Research highlights► Study of MILs is a new and emergent field, involving chemistry, physics, and engineering. ► MILs have potential applications in relation with their magnetic properties. ► We present for the first time a long-range magnetic ordering of an ionic liquid. ► The long-range magnetic ordering depends on the cooling speed.