Magnetization and Hall resistivity have been investigated for single crystals of Dy-doped Nd2Mo2O7. A sharp decrease of the Hall resistivity upon a metamagnetic transition, perhaps associated with magnetic-field (H) induced flop of Dy3+ moments, has been observed in the Dy-doped crystals only for H|| direction. In addition, the sign of the Hall resistivity at a high field, both for H|| and for H||, changes with the Dy doping. These results are explained in terms of the sign change of Mo spin chirality that is controlled by the Dy3+ moments with a different sign of f-d interaction from the Nd3+ moments.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2004 Jun 1|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics