The magnetization and magnetoresistance (MR) were measured for GdMn2Ge2, which shows a first-order transition from a low-temperature ferrimagnetic (Fi) state to a high-temperature antiferromagnetic (AF) state at T1 = 95 K. The field-induced transition from the Fi state to the high-field state was observed below T1. The transition field decreases with increasing temperature and it falls to zero at T1 for H ⊥ c, while the transition disappears above 90 K for H ∥ c. A large positive MR jump was observed associated with the fieldinduced transition for H ⊥ c. These results suggest that this may be the transition from the Fi to AF state caused by a magnetic field.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics