%0 Conference Paper
%A Kanwar, K.
%A Angst, M.
%A Panwar, N.
%A Kumar Malik, V.
%T Structural and Magnetic Characterization of RCrO3 (R = Ho, Gd)Complex Perovskites
%M FZJ-2025-04086
%D 2025
%X Rare-earth orthochromites (RCrO₃) have attracted widespread attention in recent years due to theirrich physical properties and potential applications in spintronics, thermomagnetic switches, photocatalysts,and low-temperature magnetic refrigeration [1-3]. RCrO₃ exhibits canted antiferromagneticbehavior with the canting caused by the Dzyaloshinskii–Moriya interactions and the interactionbetween Cr³⁺ and rare-earth magnetic sublattices, the latter of which also leads to negativemagnetization under certain thermal and magnetic conditions [1]. These interactions and magneticfrustration lead to deviations from classical Curie–Weiss behavior at low temperatures. Among allthe rare-earth orthochromites, we chose HoCrO3 (HCO) for our study, because in this compound,the Ho3+ ion owns a large magnetic moment ~ 10.6 μB. From the Curie-Weiss fit of magnetic susceptibilitydata, we observed a large negative value of the Weiss temperature, which showed theantiferromagnetic nature and magnetic frustration in the compound. We also found very large valuesof the magnetocaloric parameters [3]. This study opens an avenue for further investigation ofother rare-earth metals to explore magnetic frustrations. GdCrO3 is another promising candidatefor a variety of physical applications, especially its magnetic and giant magnetocaloric properties[4].Therefore, in our current study, we aim to grow high-quality single crystals of GdCrO3 for detailedneutron scattering experiments to elucidate frustrated magnetic states and correlated spin dynamics.The prepared polycrystalline precursors were characterized using powder X-ray diffraction followedby Rietveld refinement to determine their structural and microstructural properties. Furthermore,magnetic studies revealed a negative magnetization at low temperatures, along with spin reorientationbehavior. By fitting the dc magnetization data with the modified Curie–Weiss law, including theDzyaloshinskii–Moriya antisymmetric exchange interaction (D) and the symmetric exchange constant(J), these parameters were obtained. This comprehensive characterization shows the precursorsto be highly suitable for crystal growth, which is currently being pursued with laser floating-zonefurnace. Available first results on crystals would be shown as well.[1] A. A. Qahtan, et. al., Physica Scripta, 99, 072001 (2024).[2] M. Rani, et. al., Ceramics International, 48, 19925-19936 (2022).[3] K. Kanwar, et. al., Ceramics International, 47, 7386-7397 (2021).[4] S. Mahana, et. al., Journal of Physics D: Applied Physics, 51, 305002 (2018).
%B JCNS Workshop 2025, Trends and Perspectives in Neutron Scattering. Quantum Materials: Theory and Experiments
%C 7 Oct 2025 - 9 Oct 2025, Evangelische Akademie Tutzing (Germany)
Y2 7 Oct 2025 - 9 Oct 2025
M2 Evangelische Akademie Tutzing, Germany
%F PUB:(DE-HGF)6
%9 Conference Presentation
%U https://juser.fz-juelich.de/record/1047035