The magnetic susceptibility of the single-crystal alloy (Zn1-xMnx)3As2 has been investigated for the composition range 0.001 ≤ X ≤ 0.13 below the percolation threshold. The measurements have been carried out in the temperature range 2–250 K in magnetic fields from 2 up to 3700 Oe. Spin glass transitions have been observed in fields H ≈ 25 Oe at TSG ≤ 5 K. The χ(T) curves obtained for the zero field cooled and field cooled samples differ significantly, both qualitatively and quantitatively, from those relative to the specimens that had been precooled in the absence of magnetic field and successively heated. The observed hysteresis of χ(T) curves is explained by the presence of Mn ions clusters, as well as by a high magnetic viscosity of the SMSC system.
Magnetic Properties of Diluted (Zn1-xMnx)3As2 Solution
MANCINI, Giorgio;
1992-01-01
Abstract
The magnetic susceptibility of the single-crystal alloy (Zn1-xMnx)3As2 has been investigated for the composition range 0.001 ≤ X ≤ 0.13 below the percolation threshold. The measurements have been carried out in the temperature range 2–250 K in magnetic fields from 2 up to 3700 Oe. Spin glass transitions have been observed in fields H ≈ 25 Oe at TSG ≤ 5 K. The χ(T) curves obtained for the zero field cooled and field cooled samples differ significantly, both qualitatively and quantitatively, from those relative to the specimens that had been precooled in the absence of magnetic field and successively heated. The observed hysteresis of χ(T) curves is explained by the presence of Mn ions clusters, as well as by a high magnetic viscosity of the SMSC system.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.