Home > Publications database > Structural Transformations and Magnetic Properties of Mixed Spinel‐Type NiCr$_{1.7}$Fe$_{0.3}$O$_4$ Nanoparticles > print |
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024 | 7 | _ | |a 10.1002/pssb.202100284 |2 doi |
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100 | 1 | _ | |a Pandey, Gaurav Chandra |0 P:(DE-HGF)0 |b 0 |
245 | _ | _ | |a Structural Transformations and Magnetic Properties of Mixed Spinel‐Type NiCr$_{1.7}$Fe$_{0.3}$O$_4$ Nanoparticles |
260 | _ | _ | |a Weinheim |c 2021 |b Wiley-VCH |
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520 | _ | _ | |a Structural and magnetic properties of NiCr1.7Fe0.3O4 nanoparticles, synthesized by a facile coprecipitation method, are examined using temperature-dependent X-ray diffraction, neutron scattering with XYZ polarizations, and magnetic measurements. The structural analysis demonstrates the stabilization of the cubic phase down to 200 K, followed by a low-temperature tetragonal phase at 100 K and an orthorhombic phase below 50 K. The refined occupancies of cations demonstrate that the NiCr1.7Fe0.3O4 is a mixed spinel compound, wherein B sites are populated by ≈85% Cr3+ and ≈15% Ni2+ cations and A sites are populated by ≈70% Ni2+ and ≈30% Fe3+ cations. As a consequence, the reduction in the occupancy of Jahn–Teller active Ni2+ (triply degenerate: e4 t4) at A site is attributed to the stabilization of the cubic phase below room temperature. Temperature-dependent magnetization and neutron scattering with XYZ polarizations measurements reveal the ferrimagnetic nature of the magnetic phase and the absence of spin-spiral ordering in NiCr1.7Fe0.3O4 nanoparticles. Furthermore, field-dependent magnetization measurement demonstrates an exchange bias field of ≈134.5 kA m−1 at 5 K. The training effect measurement is performed to discuss the origin of exchange bias based on different phenomenological models such as power-law and multiexponent models. |
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700 | 1 | _ | |a Rath, Chandana |0 P:(DE-HGF)0 |b 2 |e Corresponding author |
773 | _ | _ | |a 10.1002/pssb.202100284 |g Vol. 258, no. 11, p. 2100284 - |0 PERI:(DE-600)1481096-7 |n 11 |p 2100284 - |t Physica status solidi / B |v 258 |y 2021 |x 0370-1972 |
856 | 4 | _ | |u https://juser.fz-juelich.de/record/906371/files/Physica%20Status%20Solidi%20b%20-%202021%20-%20Pandey%20-%20Structural%20Transformations%20and%20Magnetic%20Properties%20of%20Mixed%20Spinel%E2%80%90Type%20NiCr1.pdf |
856 | 4 | _ | |y Published on 2021-08-27. Available in OpenAccess from 2022-08-27. |u https://juser.fz-juelich.de/record/906371/files/su_PSS_B%20_2021_Pandey_final_ver.pdf |
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