The tetragonal 122 family of compounds exhibits a wide variety of intriguing phenomena, many of which are intimately related to their magnetic properties. Here, the magnetic phase diagrams of DyRh₂Si₂ and HoRh₂Si₂ are explored in detail by extremely sensitive thermal expansion and magnetostriction measurements. Some similarities can be attributed to comparable crystalline electric fields in these compounds, while an additional transition is revealed for HoRh₂Si₂ just below the N\'eel temperature (TN) and analyzed via the magnetic Gr\"uneisen ratio.
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Dawczak-Dȩbicki et al. (2024) studied this question.
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