The Magnetic Properties for Europium-Doped BiFeO3

Hyun, Sung Wook; Choi, Kang Ryong; Kim, Chul Sung

doi:10.1007/s10948-010-0959-6

Cited by 7 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The decrease of T N in our samples is due to an increase of the canting angle q and therefore a decrease Fe-O-Fe bond angle as previously reported for BEFO system in   x 0 0.1 concentration range [20]. A decrease of T N has been reported for the system BEFO for   x 0 0.2 [21] while T. Durga Rao et al [22] have observed an increase of T N from 646 °C ( = x 0) to 672 °C ( = x 0.10) attributed to the increase of Fe-O-Fe bond angle from 153.2°( = x 0) to 156.9°( = x 0.10). In order to explore the ferroelectric-paraelectric transition, DTA measurements were checked out with heating and cooling rate of 10 K min −1 under Ar atmosphere in 1050 -1150 K range.…”

Section: Resultssupporting

confidence: 87%

Phase transitions in multiferroic Bi_1−xEu_xFeO₃ synthesized by sol-gel method

El-Bey¹,

Dinia²,

Bahraoui³

et al. 2023

Phys. Scr.

View full text Add to dashboard Cite

Bi1-xEuxFeO3 micropowders 0≤x≤0.20 were synthesized by sol-gel method. X-ray diffraction shows that the crystal structure of the samples changes from rhombohedral to cubic symmetry at x=0.20. Dielectric properties and loss factor were investigated as a function of temperature. Neel temperature T_N of the compounds was measured by differential scanning calorimetry and found to decrease from 668 K to 646 K for 0≤x≤0.15 and bounce to 667 K for x=0.20. The Curie temperature TC which corresponds to the transition from ferroelectric to paraelectric phases was checked out using differential thermal analysis (DTA) measurements. The TC value increases from 1130 K to 1135 K for 0≤x≤0.15 while no transition was detected for x=0.20 in accordance with the structural transition from R3c phase to centrosymmetric Pm3m phase.

show abstract

Section: Resultssupporting

confidence: 87%

Phase transitions in multiferroic Bi_1−xEu_xFeO₃ synthesized by sol-gel method

El-Bey¹,

Dinia²,

Bahraoui³

et al. 2023

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…5) Europium: Unsurprisingly, R3c symmetry has been reported for materials with x ≤ 0.125 [121]- [124], with the exact composition limits speculative in nature with x = 0.15 [125], [126], and x = 0.2 also reported as the limits of R3c symmetry [127]. For materials with higher europium concentrations, a rhombohedral R3c to non-polar orthorhombic Pnma symmetry has been reported to occur in the range 0.15 ≤ x ≤ 0.2 by dai et al [125], [126].…”

Section: ) Lanthanummentioning

confidence: 99%

Composition-driven structural phase transitions in rare-earth-doped bifeo<sub>3</sub> ceramics: a review

Arnold

2015

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

160

121

View full text Add to dashboard Cite

Bismuth ferrite suffers from high leakage currents and the presence of a complex incommensurate spin cycloidal magnetic ordering, which has limited its commercial viability and has led researchers to investigate the functionality of doped BiFeO3 ceramics. In particular, the substitution of rare earths onto the Bi(3+) site of the perovskite lattice have been shown to lead to improved functional properties, including lower leakage currents and the suppression of the magnetic spin cycloid. There is particular interest in materials with compositions close to structural morphotropic phase boundaries, because these may lead to materials with enhanced electronic and magnetic properties analogous to the highly relevant PbZrO3- PbTiO3 solid solution. However, many contradictory crystal structures and physical behaviors are reported within the literature. To understand the structure-property relationships in these materials, it is vital that we first unravel the complex structural phase diagrams. We report here a comprehensive review of structural phase transitions in rare-earth-doped bismuth ferrite ceramics across the entire lanthanide series. We attempt to rationalize the literature in terms of the perovskite tool kit and propose an updated phase diagram based on an interpretation of the literature.

show abstract

“…In the last several decades, it is well known that perovskite-multiferroic BiFeO 3 material has aroused a great deal of interest due to its remarkable coupling behavior of ferroelastic, ferroelectric, and ferromagnetic properties. [1][2][3][4][5] Pure rhombohedron phase BiFeO 3 exhibits antiferromagnetic nature at about 380 • C and ferroelectric behavior up to 810 • C, [6][7][8] which led to an inevitable research upsurge on phase transition theory involving ferromagnetic and ferroelectric ordering simultaneously. [9][10][11] These experimental and theoretical investigations would quicken the practical applications of multiferroic materials such as ferroelectric photovoltaic devices, [12,13] high-performace nanocapacitor, [14] and composite nanofibers.…”

Section: Introductionmentioning

confidence: 99%

Off-stoichiometry indexation of BiFeO ₃ thin film on silicon by Rutherford backscattering spectrometry

et al. 2018

View full text Add to dashboard Cite

BiFeO 3 is a multiferroic material with physical properties very sensitive to its stoichiometry. BiFeO 3 thin films on silicon substrate are prepared by the sol-gel method combined with layer-by-layer annealing and final annealing schemes. X-ray diffraction and scanning electron microscopy are employed to probe the phase structures and surface morphologies. Using Rutherford backscattering spectrometry to quantify the nonstoichiometries of BiFeO 3 thin films annealed at 100 • C-650 • C. The results indicate that Bi and Fe cations are close to the stoichiometry of BiFeO 3 , whereas the deficiency of O anions possibly plays a key role in contributing to the leakage current of 10 −5 A/cm 2 in a wide range of applied voltage rather than the ferroelectric polarizations of BiFeO 3 thin films annealed at high temperature.

show abstract

The Magnetic Properties for Europium-Doped BiFeO3

Cited by 7 publications

References 17 publications

Phase transitions in multiferroic Bi_1−xEu_xFeO₃ synthesized by sol-gel method

Phase transitions in multiferroic Bi_1−xEu_xFeO₃ synthesized by sol-gel method

Composition-driven structural phase transitions in rare-earth-doped bifeo<sub>3</sub> ceramics: a review

Off-stoichiometry indexation of BiFeO ₃ thin film on silicon by Rutherford backscattering spectrometry

Contact Info

Product

Resources

About

The Magnetic Properties for Europium-Doped BiFeO3

Cited by 7 publications

References 17 publications

Phase transitions in multiferroic Bi1−xEuxFeO3 synthesized by sol-gel method

Phase transitions in multiferroic Bi1−xEuxFeO3 synthesized by sol-gel method

Composition-driven structural phase transitions in rare-earth-doped bifeo<sub>3</sub> ceramics: a review

Off-stoichiometry indexation of BiFeO 3 thin film on silicon by Rutherford backscattering spectrometry

Contact Info

Product

Resources

About

Phase transitions in multiferroic Bi_1−xEu_xFeO₃ synthesized by sol-gel method

Phase transitions in multiferroic Bi_1−xEu_xFeO₃ synthesized by sol-gel method

Off-stoichiometry indexation of BiFeO ₃ thin film on silicon by Rutherford backscattering spectrometry