Magnetization in Mn-rich -Cu100-xMnx (36<~x<~83) alloys in fields up to 75 kOe Academic Article uri icon

abstract

  • The field dependence of dc magnetization [M(H)] has been measured in Cu100xMnx (x=36, 60, 73, 76, and 83) alloys in magnetic fields up to 75 kOe at different temperatures between 4.2 and 21 K. The M(H) data are found to be almost linear with field beyond 10 kOe. This is expected since the present alloys are antiferromagnetically ordered. But, at lower fields (H<10kOe), the variation is slower than linear. The change of slope in M(H) beyond the critical field of 10 kOe is attributed to the spin-flop transition which marks the collapse of the helical spin structure and the onset of the linear spin-density-wave modulation. Another interesting observation is that the composition dependences of the magnetization and the electrical resistivity exhibit a minimum and a maximum, respectively, around x=73. This behavior is described in terms of the transition of magnetic structure from AF3 to AF1. 1999 The American Physical Society.

published proceedings

  • Physical Review B

author list (cited authors)

  • Chakraborty, S., Rathnayaka, K., Naugle, D. G., & Majumdar, A. K.

citation count

  • 0

complete list of authors

  • Chakraborty, S||Rathnayaka, KDD||Naugle, DG||Majumdar, AK

publication date

  • July 1999