Single crystals of Fe1/4 TaS2 have been studied by using magneto-optical (MO) imaging and radio-frequency magnetic susceptibility, χ. Real-time MO images reveal unusual slow dynamics of dendritic domain formation, the details of which are strongly dependent upon magnetic and thermal history. Measurements of χ (T) show well-defined local-moment ferromagnetic transition at T155K as well as thermal hysteresis for 50<T<60K. This temperature range corresponds to the domain-formation temperature as determined by MO. Together these observations provide strong evidence for local-moment ferromagnetism in Fe1/4 TaS2 crystals with large temperature-dependent magnetic anisotropy.
|Original language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Aug 6 2009|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics