6533b7d7fe1ef96bd126912a

RESEARCH PRODUCT

Giant magnetoresistance and extraordinary magnetoresistance in inhomogeneous semiconducting DyNiBi

subject

description

The semiconducting half-Heulser compound DyNiBi shows a negative giant magnetoresistance (GMR) below 200 K. Except for a weak deviation, this magnetoresistance scales roughly with the square of the magnetization in the paramagnetic state, and is related to the metal-insulator transition. At low temperature, a positive magnetoresistance is found, which can be suppressed by high fields. The magnitude of the positive magnetoresistance changes slightly with the amount of impurity phase.