Experimental Study of Magneto-Structural Correlations in Low-Dimensional Quantum Magnets Cu(en)Cl₂and Cu(tn)Cl₂

Abstract

The present work is focused on the investigation of magneto-structural correlations in Cu(en)Cl2 and Cu(tn)Cl2. A comparative study of powder susceptibility and magnetization of both compounds revealed that the replacement of tn by en ligand did not affect single-ion properties. On the other hand, the structure modification led to significant reduction of magnetic interactions as well as lowering the crystal symmetry. The impact of the high pressure on magnetic properties of the compounds is discussed.

Phase Transformation in Quasi-Two-Dimensional Quantum Antiferromagnet Cu(tn)Cl2 (tn = 1,3-Diaminopropane)

“…A missing λ-like specific heat anomaly in zero magnetic field suggests the absence of a three-dimensional long-range magnetic order down to 60 mK. This fact together with the obvious quadratic dependence of the specific heat at lowest temperatures clearly indicate a high degree of short-range magnetic order in Cu­(tn)­Cl 2 . − …”