A study on the magnetic properties of Gd–Sr based low bandwidth manganites in their bulk and thin film forms and evidence for magnetization reversal in bulk Gd 0.7 Sr 0.3 MnO 3

Joy, Lija K.; Thomas, Sabu; Anantharaman, M. R.

doi:10.1016/j.jmmm.2015.09.020

Cited by 10 publications

(3 citation statements)

References 35 publications

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“…This magnetic interaction between Fe/Ni sublattice with Gd sublattice reduces the net magnetization and becomes negative with increasing Ni substitution at x=0.04. Joy et al reported the presence of similar kind of magnetic reversal phenomenon in strontium substituted GdMnO 3 [28].…”

Section: Magnetic Studiesmentioning

confidence: 83%

“…The magnetic irreversibility between the FC and ZFC magnetization curves appears below (T irr ) 244 K. On further cooling, magnetizations of ZFC and FC curves increases and bifurcation is also widened. At very low temperature, magnetization attains a peak at T cusp ∼2.5 K. A competition between the FM and AFM interactions of Fe and Gd sublattices leads to a frustrated magnetic state, where decrease of the magnetization curves below T cusp is observed due to the dominance of AFM interaction of Gd sub lattice [11,28]. The low field (25 Oe) measurement of the ZFC and FC curves for the GdFe 0.96 Ni 0.04 O 3 sample (in figure 7(b)) shows a negative magnetization, called magnetic reversal due to the suppression of FM interaction of Fe ions.…”

Section: Magnetic Studiesmentioning

confidence: 99%

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Study of the modified magnetic, dielectric, ferroelectric and optical properties in Ni substituted GdFe_1−xNi _x O₃ orthoferrites

Raj¹,

Meenu²,

Joseph³

et al. 2021

Nanotechnology

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Polycrystalline GdFe 1−x Ni x O 3 (x=0.00, 0.02, 0.04) samples was synthesised using a glycine assisted sol-gel method to investigate the enhanced magnetic and electric properties of Ni substituted GdFeO 3 systems. TG-DSC analysis of prepared samples confirms that GdFe 1−x Ni x O 3 have good thermal stability in high temperatures. The system has been stabilized in an orthorhombic structure with space group Pbnm. The elemental composition of GdFe 1−x Ni x O 3 has been estimated from EDAX spectrum. The results showed oxygen deficiency on increasing the Ni substitution and it has been supported by Rietveld refinement. FE-SEM images and Brunauer-Emmett-Teller analysis reveals that GdFe 1−x Ni x O 3 is a highly porous material and its porosity and specific area increases with Ni substitution. Magnetic measurements indicates that the system exhibited ferrimagnetic behaviour at low temperatures and canted antiferromagnetic behaviour at room temperature. For x=0.04 Ni content, magnetization reversal for applied field of 25 Oe has been observed. Increased coercivity of GdFeO 3 with Ni substitution has been attributed to the grain size effect. From electrical point of view, dielectric permittivity of GdFeO 3 has been enhanced with Ni substitution. This enhancement has been attributed to the cumulative effects of hopping of Fe 2+ -Fe 3+ ions, grain-grain boundary contribution, and space charge polarization. The role of grain-grain boundary contribution is evident from electric modulus spectrum. The space charge effect has been realized in both impedance spectrum and dielectric loss. Temperature-dependent dielectric studies were conducted to understand the mechanisms and various aspects that contribute to the dielectric enhancement. A highly lossy capacitive nature in the P-E loop also suggests space charge effects due to Ni substitution in Fe sites. Availability of free charge carrier concentration is correlated with the optical properties of GdFe 1−x Ni x O 3 . The decrease of optical band gap (2.5-2.21 eV) on increasing Ni content suggests the increasing electronic contribution in the system. Nanotechnology Nanotechnology 33 (2022) 035705 (21pp)

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Section: Magnetic Studiesmentioning

confidence: 83%

Section: Magnetic Studiesmentioning

confidence: 99%

Study of the modified magnetic, dielectric, ferroelectric and optical properties in Ni substituted GdFe_1−xNi _x O₃ orthoferrites

Raj¹,

Meenu²,

Joseph³

et al. 2021

Nanotechnology

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“…Doped rare earth manganese oxide R 1−x A x MnO 3 with perovskite structure (R is rare earth ion, A is divalent alkaline earth metal ion) is a typical strongly correlated system with the interplay between lattice, charge, spin and orbital degrees of freedom [7,8]. It is worth noting that bulk Sm 0.7 Sr 0.3 MnO 3 is ferromagnetic [9] and Gd 0.7 Sr 0.3 MnO 3 is antiferromagnetic [10], but relatively little research has been done on Eu element doped manganites. In addition, Eu 3+ has a small ionic radius and its 4 f orbital is half-full and full-full, so the bulk manganese oxide Eu 0.7 Sr 0.3 MnO 3 (ESMO) exhibits the boundary properties of ferromagnetism (FM) and antiferromagnetism (AFM) [11,12], but the magnetic and electronic behavior of epitaxial ESMO thin films have been little studied.…”

Section: Introductionmentioning

confidence: 99%

Polarization current effect, strain effect and ferroelectric field effect on electrical transport properties of Eu_0.7Sr_0.3MnO₃/PMN-PT multiferroic heterostructure

Wang

Zheng

Wang

et al. 2023

J. Phys. D: Appl. Phys.

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By constructing Eu0.7Sr0.3MnO3 thin films/0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 (001) multiferroic heterostructures, the electrical transport properties of the Eu0.7Sr0.3MnO3 thin film under electro-photo dual control is studied. At room temperature, as the in-plane reading current increases from 1 μA to 100 μA, the polarization current effect gradually weakens, while the strain effect becomes more evident. As the temperature decreases from 300 K to 240 K, the ferroelectric field effect is observed to strengthen progressively. In addition, by applying light illumination, the ferroelectric field effect observed at 240 K can be suppressed, which proves that the light field can obviously control the tunable mechanism of electric field. Our results demonstrate that the temperature and light field play an important role in the switching between the electric field induced multiple tunable effects, such as polarization current effect, lattice strain effect and ferroelectric field effect. Meanwhile, the sensitivity of the Eu0.7Sr0.3MnO3 film to lattice strain enhances its application in tunable electronics.

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Catalytic application of some perovskite nano-oxides for the one-pot synthesis of 1,8-dioxodecahydroacridines

Tavakkoli

Sanaeishoar

Mohave

et al. 2016

Reac Kinet Mech Cat

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A study on the magnetic properties of Gd–Sr based low bandwidth manganites in their bulk and thin film forms and evidence for magnetization reversal in bulk Gd 0.7 Sr 0.3 MnO 3

Cited by 10 publications

References 35 publications

Study of the modified magnetic, dielectric, ferroelectric and optical properties in Ni substituted GdFe_1−xNi _x O₃ orthoferrites

Study of the modified magnetic, dielectric, ferroelectric and optical properties in Ni substituted GdFe_1−xNi _x O₃ orthoferrites

Polarization current effect, strain effect and ferroelectric field effect on electrical transport properties of Eu_0.7Sr_0.3MnO₃/PMN-PT multiferroic heterostructure

Catalytic application of some perovskite nano-oxides for the one-pot synthesis of 1,8-dioxodecahydroacridines

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A study on the magnetic properties of Gd–Sr based low bandwidth manganites in their bulk and thin film forms and evidence for magnetization reversal in bulk Gd 0.7 Sr 0.3 MnO 3

Cited by 10 publications

References 35 publications

Study of the modified magnetic, dielectric, ferroelectric and optical properties in Ni substituted GdFe1−x Ni x O3 orthoferrites

Study of the modified magnetic, dielectric, ferroelectric and optical properties in Ni substituted GdFe1−x Ni x O3 orthoferrites

Polarization current effect, strain effect and ferroelectric field effect on electrical transport properties of Eu0.7Sr0.3MnO3/PMN-PT multiferroic heterostructure

Catalytic application of some perovskite nano-oxides for the one-pot synthesis of 1,8-dioxodecahydroacridines

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Study of the modified magnetic, dielectric, ferroelectric and optical properties in Ni substituted GdFe_1−xNi _x O₃ orthoferrites

Study of the modified magnetic, dielectric, ferroelectric and optical properties in Ni substituted GdFe_1−xNi _x O₃ orthoferrites

Polarization current effect, strain effect and ferroelectric field effect on electrical transport properties of Eu_0.7Sr_0.3MnO₃/PMN-PT multiferroic heterostructure