Switching of dominant magnetic exchange interactions between tetrahedral–octahedral and octahedral–octahedral sites in (Mn 1− x Cr x) 3 O 4 spinels

GD Dwivedi, TW Yen, SM Kumawat… - Journal of Materials …, 2023 - pubs.rsc.org
Magnetic exchange interactions in Mn3O4 spinel systems are complicated due to the
presence of magnetic frustration between one tetrahedral and two octahedral sites, and the …

Large exchange bias in Cr substituted Fe 3 O 4 nanoparticles with FeO subdomains

C Bulbucan, C Preger, A Kostanyan, KMØ Jensen… - Nanoscale, 2021 - pubs.rsc.org
Tuning the anisotropy through exchange bias in bimagnetic nanoparticles is an active
research strategy for enhancing and tailoring the magnetic properties for a wide range of …

Williamson-Hall technique for magnetic cooling in nanosized manganite LaNi0. 25Mn0. 75O3 and ferrite LaNi0. 25Fe0. 75O3

R Hamdi, SS Hayek, A Samara, Y Tong, SA Mansour… - Solid State …, 2023 - Elsevier
We addressed the physical characterisation and synthesis of both manganite LaNi 0.25 Mn
0.75 O 3 (LNM) and ferrite LaNi 0.25 Fe 0.75 O 3 (LNF) nanomaterials. Both samples were …

Role of pd hybridization in structural transition and magnetic properties of Co-substituted Mn3O4: X-ray absorption spectroscopy study

GD Dwivedi, SM Kumawat, YY Chin, JW Lynn… - Journal of Alloys and …, 2024 - Elsevier
This work investigates the role of pd orbital hybridization in the structural transition from
tetragonal I4 1/amd to cubic Fd 3 ̅ m and enhancement in Néel temperature (TN) from 43 K …

Understanding the correlation between orbital degree of freedom, lattice-striction and magneto-dielectric coupling in ferrimagnetic Mn1. 5Cr1. 5O4

GD Dwivedi, SM Kumawat, TW Yen… - Journal of Physics …, 2021 - iopscience.iop.org
Dielectric anomaly observed in cubic Mn 1.5 Cr 1.5 O 4 around ferrimagnetic ordering
temperature (TN) suggests a possible magneto-dielectric coupling in the system. This report …

High-Temperature Dielectric Relaxation Behaviors in Mn3O4 Polycrystals

S Wang, X Zhang, R Yao, L Fan, H Zhou - Materials, 2019 - mdpi.com
High temperature dielectric relaxation behaviors of single phase Mn3O4 polycrystalline
ceramics prepared by spark plasma sintering technology have been studied. Two dielectric …

Existence of exchange bias and Griffith phase in (Tb1-xCex) MnO3

S Ghosh, A Kumar, A Pal, P Singh, P Gupta… - Journal of Magnetism …, 2020 - Elsevier
The structural and magnetic properties of (Tb 1-x Ce x) MnO 3 have been investigated. The
presence of Griffith's phase has been confirmed from the AC susceptibility study of the …

Efficient single-step Cool-SPS processing of Mn3O4 ceramics at 400° C with persistent magnetodielectric coupling

SS Bhoi, MR Suchomel, F Molinari, L Faure… - Ceramics …, 2024 - Elsevier
Spinel type Mn 3 O 4 oxide ceramics possess intriguing magnetodielectric properties, but
traditional processing routes can be frustrated by limited high temperature phase stability …

Magnetic frustration induced liquid-like short-range ordering in cubic Mn1. 5Cr1. 5O4

GD Dwivedi, CW Wang, SM Kumawat… - Applied Physics …, 2020 - pubs.aip.org
In this report, we have done a detailed investigation on temperature-dependent neutron
diffraction patterns to reveal the existence of short-range magnetic ordering above Néel …

Understanding the structural behaviors and abrupt enhancement in magnetic ordering temperature of Fe-substituted Mn3O4

SM Kumawat, GD Dwivedi, YH Chien, PF Su… - Materials Research …, 2022 - Elsevier
We report an increase in magnetic ordering temperature from 43 K to 425 K and a structural
phase transition from tetragonal I4 1/amd (x= 0.00) to cubic Fd 3¯ m (x= 0.40) in (Mn 1-x Fe …