Evidence for magneto-electric and spin–lattice coupling in PbFe0.5Nb0.5O3 through structural and magneto-electric studies

Matteppanavar, Shidaling; Rayaprol, Sudhindra; Singh, Kiran; Reddy, V. Raghavendra; Angadi, Basavaraj

doi:10.1007/s10853-015-9046-5

Cited by 46 publications

(35 citation statements)

References 36 publications

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“…Figure 4 (a) shows the Rietveld refined data for all the solid solutions with the reasonable fitting between the calculated and experimental data. The obtained lattice parameters are reported elsewhere [26] and are in excellent agreement with literature reports [29]. There are four between the calculated and experimental data.…”

Section: Neutron Diffraction Studiessupporting

confidence: 89%

“…Mössbauer spectrum confirmed no magnetically splitted doublet at RT implying that there are no significant internal magnetic field of the sample (due to the T N ~ 155K) [26,50,51]. The x = 0.0 is fitted by a single quadrupole doublet and existing doublet is due to the Fe 3+ ions in an octahedral environment.…”

Section: Mössbauer Spectroscopymentioning

confidence: 90%

“…RT and low temperature ND data for x = 0.0 are reported elsewhere [26] along with the structure and existing magnetoelectric coupling through the spin lattice coupling. The RT ND data were refined (nuclear structure) with the monoclinic structure with Cm symmetry.…”

Section: Neutron Diffraction Studiesmentioning

confidence: 99%

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Composition dependent room temperature structure, electric and magnetic properties in magnetoelectric Pb(Fe 1/2 Nb 1/2 )O 3 Pb(Fe 2/3 W 1/3 )O 3 solid-solutions

Matteppanavar

Rayaprol

Angadi

et al. 2016

Journal of Alloys and Compounds

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Section: Neutron Diffraction Studiessupporting

confidence: 89%

Section: Mössbauer Spectroscopymentioning

confidence: 90%

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Composition dependent room temperature structure, electric and magnetic properties in magnetoelectric Pb(Fe 1/2 Nb 1/2 )O 3 Pb(Fe 2/3 W 1/3 )O 3 solid-solutions

Matteppanavar

Rayaprol

Angadi

et al. 2016

Journal of Alloys and Compounds

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“…transition (T g & 10-30 K [78][79][80][81][82][83][84][85][86]) extends to at least 15 % PT. A closely similar pattern is seen with increasing PZ content along the PZ-PFN join in Lidoped samples [42].…”

Section: Magnetic Propertiesmentioning

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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“…На основе мультиферроика проводится широкий поиск новых материалов с сегнетоэлектрическими свойствами специфической электронной и магнитной структурами. Замещенные перовскиты на основе феррита висмута нередко сочетают сегнетоэлектрические и слабоферромагнитные свойства при доминирующем антиферромагнитном упорядочении [4,5,6].…”

Section: Introductionunclassified

Synthesis and X-ray analysis of complex ferrite YbBiNaFe2O6,5

Mataev¹,

Абдраймова²,

Atabay³

2017

KazNU Chem Bull

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The complex oxide phase of the composition YbBiNaFe2O6,5 was synthesized by the high-temperature solid-phase reaction. X-ray diffraction analysis was used to study the structure for the first time; the type of syngony, unit cell parameters, X-ray diffraction and pycnometric densities were determined. X-ray diffraction was carried out by homology method from the initial fluorite structure δBi2O3. The method of least squares refined the parameters of the crystal lattice. The parameters of the orthorhombic lattice of complex mixed ferrite at the value of the number of formula units Z=4 are: a=5.2319, в=5.2186, с=7.5702 Å. The correctness of the results of the X-ray diffraction of complex mixed ferrite was confirmed by the good agreement between the experimental and calculated values of the inverse squares of the interplanar distances (104/d2). Satisfactory consistency of the values of the X-ray and pycnometric densities, ρrad = 8.335, ρpik = 8.328 g/cm3, proves the correctness of the results of the experiment. A comparative analysis of the interrelation between the parameters of the crystal lattice and the parameters of the crystal lattices of the initial oxide δBi2O3. The analysis shows the values of the parameters “a” and “c” are in satisfactory agreement with the parameters of the crystal lattice δBi2O3, the parameter “c” is distorted from the value of the parameter “a” on √2.

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Evidence for magneto-electric and spin–lattice coupling in PbFe0.5Nb0.5O3 through structural and magneto-electric studies

Cited by 46 publications

References 36 publications

Composition dependent room temperature structure, electric and magnetic properties in magnetoelectric Pb(Fe 1/2 Nb 1/2 )O 3 Pb(Fe 2/3 W 1/3 )O 3 solid-solutions

Composition dependent room temperature structure, electric and magnetic properties in magnetoelectric Pb(Fe 1/2 Nb 1/2 )O 3 Pb(Fe 2/3 W 1/3 )O 3 solid-solutions

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

Synthesis and X-ray analysis of complex ferrite YbBiNaFe2O6,5

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