ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Here we report a detailed study providing complete H-T phase diagrams for both NdRu2Si2 and TbRu2Si2 intermetallic compounds, based on high resolution SQUID magnetization measurements, in the temperature range 2–300 K and in applied magnetic fields up to 5 T, using c-axis magnetically oriented powders. For NdRu2Si2, our results are in good agreement with recent neutron diffraction work under applied magnetic fields, confirming the appearance of an intermediate (temperature and field) ferrimagnetic phase responsible for the two-step metamagnetic process observed in the temperature range 16–22.5 K. Our isofield magnetization curves provide unambiguous evidence on the decomposition of this ferrimagnetic phase into ferromagnetic and antiferromagnetic components. Furthermore, at low temperatures and low fields, we observe, in this compound, the presence of thermal irreversibility effects. For TbRu2Si2, we present an experimental account, on its H-T phase diagram, which shows striking differences with respect to that of NdRu2Si2. In particular, the ferrimagnetic phase, which sets in at 50 K, persists down to the lowest temperature. In addition, we observe reentrant ferrimagnetism in this compound (ferri-ferro-ferri) under applied fields in the range 28–31 kOe.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.358261
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