Abstract
Various transport and magnetic properties of semi-Heusler phases are
described, which arise from the particular crystallographic structure
and narrow band phenomena. Semiconducting-to-metal cross overs are
observed by varying the electron concentration. The onset of weak
itinerant ferromagnetism often arises in the metallic state. Even
in NiMnSb, where the strong ferromagnetism results in a half metallic
state below 80 K, the magnetism evolves from Heinsenberg-like to
itinerant by increasing the temperature. Giant magnetoresistance
effects are observed in the semiconducting rare earth compounds NiRSb.
Users
Please
log in to take part in the discussion (add own reviews or comments).