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Browsing by Author "Mahana, S."

Browsing by Author "Mahana, S."

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  • Complex Magnetic behavior in GdCrO3 
    Mahana, S.; Manju, Unnikrishnan; Topwal, D. (61st Dae-Solid State Physics Symposium, 1832, 2017)
    Magnetic interactions in Gadolinium orthochromites (GdCrO3) are quite complex. It shows strong temperature dependency related to Gd3+-Gd3+, Gd3+-Cr3+ and Cr3+-Cr3+ interactions, resulting in exotic phenomena like spin ...
  • Gd induced modifications in the magnetocaloric properties of dysprosium manganites 
    Prusty, A.; Mahana, S.; Gloskovskii, A.; Topwal, D.; Manju, U. (Journal of Alloys and Compounds, 883, 2021: 160862)
    We report structural, electronic, magnetic, and magnetocaloric studies of polycrystalline DyMnO3 and its A-site Gd substituents, Dy1-xGdxMnO3, where 0 <= x <= 1. Detailed comparison of various magnetocaloric parameters ...
  • GdCrO3: a potential candidate for low temperature magnetic refrigeration 
    Mahana, S.; Manju, Unnikrishnan; Topwal, D. (Journal Of Physics D-Applied Physics, 51(30), 2018: 305002)
    Detailed magnetic studies of polycrystalline GdCrO3 show a spectrum of interesting features, such as temperature induced magnetization reversal, spin flipping and spin reorientation, etc, which arise due to the competing ...
  • Giant magnetocaloric effect in GdAlO3 and a comparative study with GdMnO3 
    Mahana, S.; Manju, Unnikrishnan; Topwal, D. (Journal Of Physics D-Applied Physics, 50(3), 2017)
    The magnetic properties and magnetocaloric effect of polycrystalline GdAlO3 and GdMnO3 have been investigated to assess their potential usage as magnetic refrigerants at cryogenic temperatures. These compounds undergo ...
  • Local inversion symmetry breaking and spin-phonon coupling in the perovskite GdCrO3 
    Mahana, S.; Rakshit, B.; Basu, R.; Dhara, S.; Joseph, B.; Manju, Unnikrishnan; Mahanti, S.D.; Topwal, D. (Physical Review B, 96(10), 2017)
    Our detailed temperature-dependent synchrotron powder x-ray diffraction studies along with first-principles density-functional-theory-based calculations enable us to shed light on the origin of ferroelectricity in GdCrO3. ...
  • Optical and Low Temperature Magnetic Properties Study on Sol-gel Derived Misfit Calcium Cobaltite 
    Mishra, A.; Mahana, S.; Topwal, D.; Manju, Unnikrishnan; Bhattacharjee, S. (61st Dae-Solid State Physics Symposium, 1832, 2017)
    Phase pure Calcium cobaltite is prepared by sol-gel method using citric acid as complexing agent. Optical properties are characterized by FTIR and UV-vis diffuse reflectance spectroscopy. Magnetic measurement at 5-390 shows ...
  • Role of local structural distortion in driving ferroelectricity in GdCrO3 
    Mahana, S.; Manju, Unnikrishnan; Nandi, P.; Welter, E.; Priolkar, K.R.; Topwal, D. (Physical Review B, 97(22), 2018: 224107)
    Temperature-dependent synchrotron x-ray diffraction and extended x-ray absorption fine structure (EXAFS) studies were performed to understand the role of structural characteristics in driving the magnetoelectric multiferroic ...
  • Site substitution in GdMnO3: Effects on structural, electronic, and magnetic properties 
    Mahana, S.; Pandey, S.K.; Rakshit, B.; Nandi, P.; Basu, R.; Dhara, S.; Turchini, S.; Zema, N.; Manju, U.; Mahanti, S.D.; Topwal, D. (Physical Review B, 102(24), 2020: 245120)
    We report on detailed structural, electronic, and magnetic studies of GdMn1-xCrxO3 for Cr doping levels; x = 0 <= x <= 1. X-ray diffraction studies suggest that GdMn0.5Cr0.5O3 has a monoclinic P2(1)/b structure with alternate ...

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