Caloric characteristics of PbTiO3 in the temperature range of the ferroelectric phase transition

Mikhaleva, E. A.; Flerov, I. N.; Горев, М. В.; Мolokeev, Maxim S.; Cherepakhin, A. V.; Карташев, А. В.; Михашенок, Н. В.; Sablina, K. A.

doi:10.1134/s1063783412090181

Cited by 53 publications

(39 citation statements)

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“…For example, the largest ∆T E reported in Ref. 24 for E =1.5 kV/cm is 1.9 K which is in quantitative agreement with our computed value of 1.3 K obtained for the same field. Fig.1(b) gives the piezocaloric temperature change as a function of the initial temperature for different stress fields, ∆σ, applied.…”

supporting

confidence: 82%

“…For example, a recent study 24 reports a barocaloric change in the temperature of -0.8 K under the application of 0.01 GPa pressure which compares well with our computed value of 0.4 K under stress with the same magnitude. Note that the difference in sign of ∆T σ is due to the fact that we simulate tensile stress, while the hydrostatic pressure applied in Ref.…”

supporting

confidence: 75%

“…Note that the difference in sign of ∆T σ is due to the fact that we simulate tensile stress, while the hydrostatic pressure applied in Ref. 24 produces compressive stress. Fig.1(c) shows the computational data for multicaloric temperature change ∆T E,σ which were obtained in simulations with stress and electric fields applied simultaneously.…”

mentioning

confidence: 99%

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Multicaloric effect in ferroelectric PbTiO3from first principles

et al. 2013

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confidence: 82%

supporting

confidence: 75%

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Multicaloric effect in ferroelectric PbTiO3from first principles

et al. 2013

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“…Since the TEC peaks at the phase transition and the TEC versus temperature curves are almost flat in the paraelectric phase, the corresponding intrinsic entropy change in paraelectric phase cannot be comparable with that near the phase transition. 31,32 Therefore, it is rational to ignore the contribution from that above the phase transition. In this regard, the corresponding TEC can therefore be set to be extremely small or zero in the paraelectric phase.…”

mentioning

confidence: 99%

Influence of epitaxial strain on elastocaloric effect in ferroelectric thin films

Liu

Wei

Lou

et al. 2015

Applied Physics Letters

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“…order but close to a tricritical point [14][15][16][17][18][19]. The same transition extends along the PT-PFN binary [20].…”

Section: Phase Transitions and Location Of The Morphotropic Phase Boumentioning

confidence: 97%

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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Caloric characteristics of PbTiO3 in the temperature range of the ferroelectric phase transition

Cited by 53 publications

References 20 publications

Multicaloric effect in ferroelectric PbTiO3from first principles

Multicaloric effect in ferroelectric PbTiO3from first principles

Influence of epitaxial strain on elastocaloric effect in ferroelectric thin films

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

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