| Hauptseite > Publications database > Interplay of magnetic order and ferroelasticity in the spin-orbit coupled antiferromagnet K$_{2}$ReCl$_{6}$ |
| Journal Article | IMPULSE-2025-00057 |
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2024
Inst.
Woodbury, NY
Please use a persistent id in citations: doi:10.1103/PhysRevB.109.094409
Abstract: The magnetic and structural phase transitions occurring in K2ReCl6 were studied by macroscopic and microscopic techniques. Structural phase transitions associated with rotations of the ReCl6 octahedra lower the symmetry from cubic to monoclinic, form ferroelastic domains, and are visible in susceptibility, specific heat, and thermal expansion measurements. In the antiferromagnetically ordered state slightly below 𝑇N=12K these domains can be rearranged by a magnetic field inducing a relative elongation of the polydomain crystal parallel to the field of 0.6%. At zero field the magnetic structure in K2ReCl6 does not exhibit a weak ferromagnetic component, but at large magnetic field a distinct magnetic structure with a finite weak ferromagnetic component is stabilized. High magnetic fields rearrange the domains in the crystal to align the weak ferromagnetic moment parallel to the field. The altered domain structure with the crystal elongation is abruptly suppressed at lower temperature but persists upon heating to well above 𝑇N. However, heating above the lowest structural phase transition and successive cooling restore the initial shape.
Keyword(s): Magnetic Materials (1st) ; Magnetism (2nd)
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