Magnetic properties of PbFe<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mrow><mml:mn>1</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>Nb<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mrow><mml:mn>1</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>O<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /

Raevski, I. P.; Кубрин, С. П.; Raevskaya, S. I.; Sarychev, D. A.; Prosandeev, S. A.; Malitskaya, M. A.

doi:10.1103/physrevb.85.224412

Cited by 72 publications

(43 citation statements)

References 22 publications

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“…On cooling, PFN undergoes FE [4][5][6] and magnetic phase transitions 2,3,6,7 , it is supposed to have the FE relaxor- 6,8,9 or even birelaxor-properties 7 , while some of them might have extrinsic reasons 10 . First-principles calculations of the energies of different chemical configurations of PFN revealed an unusual effect of Fe nanoscale ordering 11 influencing magnetic properties of PFN 12,13 . In line with these predictions, the studies of Mossbauer- 11 and NMR-spectra 14 showed that PFN is chemically inhomogeneous at nanoscale.…”

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confidence: 99%

“…First-principles calculations of the energies of different chemical configurations of PFN revealed an unusual effect of Fe nanoscale ordering 11 influencing magnetic properties of PFN 12,13 . In line with these predictions, the studies of Mossbauer- 11 and NMR-spectra 14 showed that PFN is chemically inhomogeneous at nanoscale. Very probably, this evidence can explain the fact that the experimental value of the Neel temperature, T N ≈ 150K, in PFN is much lower than the value estimated on the basis of the random distribution of the Fe and Nb ions in the lattice 15 .…”

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confidence: 99%

“…Very probably, this evidence can explain the fact that the experimental value of the Neel temperature, T N ≈ 150K, in PFN is much lower than the value estimated on the basis of the random distribution of the Fe and Nb ions in the lattice 15 . Similarly, calculations 11 and experiment 3,[16][17][18] showed that this kind of Fe ordering should take place also in Pb(Fe 27 , and effective Hamiltonian method 28,29 .…”

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Influence of epitaxial strain on clustering of iron inPb(Fe1/2Nb1/2)O3
Prosandeev
¹
,
Raevski
²
,
Raevskaya
³

et al. 2015
Phys. Rev. B
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Influence of epitaxial strain on clustering of iron inPb(Fe1/2Nb1/2)O3
Prosandeev
¹
,
Raevski
²
,
Raevskaya
³

et al. 2015
Phys. Rev. B
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19
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0
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“…and Nb 5? in PFN, Mössbauer and NMR spectroscopy suggest a degree of short-range order or clustering [92][93][94]. Alternating Fe/Nb in three dimensions would change the symmetry of the cubic phase from Pm 3m to Fm 3m [95].…”

Section: B-site Orderingmentioning

confidence: 99%

Elastic and anelastic relaxation behaviour of perovskite multiferroics I: PbZr0.53Ti0.47O3 (PZT)–PbFe0.5Nb0.5O3 (PFN)

et al. 2016

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Perovskites in the ternary system PbTiO 3 (PT)-PbZrO 3 (PZ)-Pb(Fe 0.5 Nb 0.5 )O 3 (PFN) have attracted close interest because they can display simultaneous ferroelectric, magnetic and ferroelastic properties. Those with the most sensitive response to external fields are likely to have compositions near the morphotropic phase boundary (MPB) which lies close to the binary join Pb(Zr 0.53 Ti 0.47 )O 3 (PZT)-PFN. In the present study, the strength and dynamics of strain coupling behaviour which accompanies the development of ferroelectricity and (anti)ferromagnetism in ceramic PZT-PFN samples have been investigated by resonant ultrasound spectroscopy. Elastic softening ahead of the cubic-tetragonal transition does not fit with models based on dispersion of the soft mode or relaxor characteristics but is attributed, instead, to coupling between acoustic modes and a central peak mode from correlated relaxations and/or microstructure dynamics. Softening of the shear modulus through the transition by up to *50 % fits with the expected pattern for linear/quadratic strain/order parameter coupling at an improper ferroelastic transition and close to tricritical evolution for the order parameter. Superattenuation of acoustic resonances in a temperature interval of *100 K below the transition point is indicative of mobile ferroelastic twin walls. By way of contrast, the first-order tetragonalmonoclinic transition involves only a small change in the shear modulus and is not accompanied by significant changes in acoustic dissipation. The dominant Address correspondence to E-mail: mc43@esc.cam.ac.uk DOI 10.1007/s10853-016-0280-2 J Mater Sci (2016) 51:10727-10760 feature of the elastic and anelastic properties at low temperatures is a concaveup variation of the shear modulus and relatively high loss down to the lowest temperature, which appears to be the signature of materials with substantial local strain heterogeneity and a spectrum of strain relaxation times. No evidence of magnetoelastic coupling has been found, in spite of the samples displaying ferromagnetism below *550 K and possible spin glass ordering below *50 K. For the important multiferroic perovskite ceramics with compositions close to the MPB of ternary PT-PZ-PFN, there must be some focus in future on the role of strain heterogeneity.

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“…However, no such ordering have been observed and Pb(Fe 0.5 Ta 0.5 )O 3 could be considered as a fully disordered in B-site sublattice of perovskite structure [8][9][10]. On the other hand, for a similar Pb(Fe 0.5 Nb 0.5 )O 3 compound, large scattering of magnetic ordering temperature could be explained by local compositional ordering and formation of Nb-poor-Fe-rich and Nb-rich-Fe--poor regions as postulated in [14][15][16]. Additionally, Pb(Fe 0.5 Ta 0.5 )O 3 is a perovskite relaxor, is reported to have a very high dielectric constant, and can be used as a multilayer ceramic capacitor [17].…”

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confidence: 99%

Crystal structure and Mössbauer effect in multiferroic 0.5BiFeO₃-0.5Pb(Fe_0.5Ta_0.5)O₃ solid solution

et al. 2017

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IntroductionMaterials that exhibit ferromagnetic and ferroelectric ordering in the same phase are named magnetoelectrics, which are part of a larger group of multiferroics. Multiferroics possess at least two ferroic orderings at the same time. Magnetoelectric materials are characterized by a strong coupling between the magnetic and electric subsystems, which means that the magnetic fi eld is able to induce electric polarization and vice versa.The fi rst single-phase multiferroic perovskite oxides (ABO 3 ) were discovered in early 1960s. However, very limited progress has been made during the past several decades [1][2][3][4][5][6]. The signifi cant development of multiferroic materials started with the successful synthesis of multiferroic thin fi lms [7].Magnetoelectrics are widely used as transducers, actuators, detectors, and other sensors that are characterized by high dielectric permittivity and magnetic permeability [1][2][3][4][5][6][7] Abstract. Multiferroic 0.5BiFeO 3 -0.5Pb(Fe 0.5 Ta 0.5 )O 3 solid solution is a material that exhibits ferroelectric and antiferromagnetic orderings in ambient temperature. The solid solution was obtained as a result of a conventional reaction in a solid state. The obtained material is a dense, fi ne-grained sinter whose surface was observed by scanning electron microscopy (SEM) and stoichiometry was confi rmed by energy dispersive X-ray spectroscopic (EDS) analysis. According to the X-ray powder diffraction (XRD) measurements, the main phase is R3c space group with admixture of Pm-3m regular phase. Small contribution of pyrochlore-like phase was also observed. Mössbauer spectroscopy suggested random distribution of Fe 3+ /Ta 5+ cations in the B sites of ABO 3 compound. Reduction of the magnetic hyperfi ne fi eld with an increase in the substitution of Ta 5+ in Fe 3+ neighbourhood was also observed.

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Magnetic properties of PbFe1/2Nb1/2O

Cited by 72 publications

References 22 publications

Influence of epitaxial strain on clustering of iron inPb(Fe1/2Nb1/2)O3
Prosandeev
¹
,
Raevski
²
,
Raevskaya
³

et al. 2015
Phys. Rev. B
Self Cite
19
1
5
0
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Influence of epitaxial strain on clustering of iron inPb(Fe1/2Nb1/2)O3
Prosandeev
¹
,
Raevski
²
,
Raevskaya
³

et al. 2015
Phys. Rev. B
Self Cite
19
1
5
0
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Elastic and anelastic relaxation behaviour of perovskite multiferroics I: PbZr0.53Ti0.47O3 (PZT)–PbFe0.5Nb0.5O3 (PFN)

Crystal structure and Mössbauer effect in multiferroic 0.5BiFeO₃-0.5Pb(Fe_0.5Ta_0.5)O₃ solid solution

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Magnetic properties of PbFe1/2Nb1/2O

Cited by 72 publications

References 22 publications

Influence of epitaxial strain on clustering of iron inPb(Fe1/2Nb1/2)O3Prosandeev1, Raevski2, Raevskaya3 et al. 2015Phys. Rev. BSelf Cite19150View full textAdd to dashboardCite

Influence of epitaxial strain on clustering of iron inPb(Fe1/2Nb1/2)O3Prosandeev1, Raevski2, Raevskaya3 et al. 2015Phys. Rev. BSelf Cite19150View full textAdd to dashboardCite

Elastic and anelastic relaxation behaviour of perovskite multiferroics I: PbZr0.53Ti0.47O3 (PZT)–PbFe0.5Nb0.5O3 (PFN)

Crystal structure and Mössbauer effect in multiferroic 0.5BiFeO3-0.5Pb(Fe0.5Ta0.5)O3 solid solution

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Influence of epitaxial strain on clustering of iron inPb(Fe1/2Nb1/2)O3
Prosandeev
¹
,
Raevski
²
,
Raevskaya
³

et al. 2015
Phys. Rev. B
Self Cite
19
1
5
0
View full text Add to dashboard Cite

Influence of epitaxial strain on clustering of iron inPb(Fe1/2Nb1/2)O3
Prosandeev
¹
,
Raevski
²
,
Raevskaya
³

et al. 2015
Phys. Rev. B
Self Cite
19
1
5
0
View full text Add to dashboard Cite

Crystal structure and Mössbauer effect in multiferroic 0.5BiFeO₃-0.5Pb(Fe_0.5Ta_0.5)O₃ solid solution