Abstract
The effect of small concentrations of impurities on the magnetic behavior of quasi-one-dimensional Heisenberg systems with a small orthorhombic anisotropy has been studied both theoretically and experimentally. The predicted reduction of the ordering temperature TN as a function of impurity concentration x is compared with experimental data on (CH3)2NH2Mn1-xCdxCl3 (DMMC:Cd), (CH3)2NH2Mn1-xCuxCl3 (DMMC:Cu), and CsMn1-xCuxCl3 2H2O (CMC:Cu). We also measured the magnetic phase diagram of DMMC:Cd (x=0.77%) along each of the three principal directions. The observed behavior can be qualitatively explained by the theory presented in this paper.
Original language | English |
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Pages (from-to) | 4084-4089 |
Number of pages | 6 |
Journal | Physical Review B |
Volume | 21 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1 Jan 1980 |