Abstract
The temperature dependences of DC and AC magnetisation, electrical resistivity and magnetoresistivity of TbCu 4Ag and DyCu 4Ag are reported. In contrast to previous studies which indicate TbCu 4Ag to be a simple antiferromagnet and DyCu 4Ag to be a ferromagnet, our study indicates a more complicated behaviour for these materials. We observe three magnetic transitions for TbCu 4Ag, viz. at T C=20 K, T 1=11 K and T 2=2.5 K. At temperatures T⩽ 10 K the magnetic isotherms show metamagnetic behaviour, while for T 1⩽ T⩽ T C our results suggest canted antiferromagnetism. For DyCu 4Ag magnetic transitions are observed at T C=19 K and in the vicinity of 5 K. Also for this material there is evidence suggesting a canted antiferromagnetic spin structure.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
