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The anisotropic magnetic phase diagrams, tricriticality, and spin-reorientation in high-pressure grown SmCrO₃ single crystals

The group of Professor Klingeler from Heidelbergs Kirchoff Institute of Physics investigated the magnetic properties of high-pressure grown SmCrO3 single crystals. The study focuses on the anisotropic magnetic phase diagrams, including the phenomenon of tricriticality and spin reorientation transitions, using magnetic field and temperature variations.

The SmCrO3 single crystals were grown at an argon pressure of 30 bar using a ScIDre HKZ floating zone furnace with a 7 kW xenon arc lamp. According to the authors best knowledge, this is the first time oriented SmCrO3 single crystals have been reported. A major difficulty in growing this compound is the evaporation of Cr2O3, which could be largely suppressed by the applied argon pressure and a comparatively fast pulling speed.

The application of magnetic fields along the crystallographic axes allowed the construction of anisotropic magnetic phase diagrams and the observation of field-induced spin reorientation transitions. Also they found a triple point as well as tricritical behavior for B||a axis which further highlights the complex interplay of anisotropic magnetic moments in SmCrO3.

https://journals.aps.org/prb/abstract/10.1103/PhysRevB.111.174437

Posted in Publications on Jul 04, 2025.