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@INPROCEEDINGS{Kanwar:1047035,
      author       = {Kanwar, K. and Angst, M. and Panwar, N. and Kumar Malik,
                      V.},
      title        = {{S}tructural and {M}agnetic {C}haracterization of {RC}r{O}3
                      ({R} = {H}o, {G}d){C}omplex {P}erovskites},
      reportid     = {FZJ-2025-04086},
      year         = {2025},
      abstract     = {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).},
      month         = {Oct},
      date          = {2025-10-07},
      organization  = {JCNS Workshop 2025, Trends and
                       Perspectives in Neutron Scattering.
                       Quantum Materials: Theory and
                       Experiments, Evangelische Akademie
                       Tutzing (Germany), 7 Oct 2025 - 9 Oct
                       2025},
      subtyp        = {Invited},
      cin          = {JCNS-2 / JARA-FIT},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (FZJ) (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/1047035},
}