Reversal of the sign of giant magnetoresistance upon boron filling in RPd₃compounds (R=Tb,Er)

Abstract

Abstract.We report the study of magnetic and transport properties of binary intermetallic compounds RPd3 (R: Tb and Er) and boron-filled perovskite compounds RPd3B. Our results suggest that the magnetic and transport behavior of boron-filled compositions is substantially different compared to that of undoped compounds. For example, TbPd3 and ErPd3 exhibit negative magnetoresistance, while boron-filled TbPd3B and ErPd3B shows positive magnetoresistance. In addition, our results also suggest that there exists a strong correlation between magnetic and electrical-transport behavior of these systems.