Abstract
Specific heat measurements of a (Formula presented) single crystal in magnetic fields up to 14 T along the three principal axes were performed. Anomalies of the specific heat indicating long-range antiferromagnetic order are strongly field dependent and exhibit an extreme anisotropy with respect to the magnetic field orientation. In addition, large magnetic contributions to the specific heat above the phase transition were observed revealing the low dimensional character of the chains. Our data strongly suggest that the chains in (Formula presented) exhibit an Ising-like antiferromagnetism.
| Original language | English |
|---|---|
| Pages (from-to) | R3592-R3595 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 62 |
| Issue number | 6 |
| DOIs | |
| State | Published - 2000 |
| Externally published | Yes |