Temperature-dependent Raman spectra and electrical properties of 0.69Pb(Mg1/3Nb2/3)O3–0.31PbTiO3 single crystals

Fang, Bijun; Liu, Xing; Li, Xiaobing; Ding, Jianning; Zhao, Xiangyong; Luo, Haosu

doi:10.1007/s00339-016-0340-0

Cited by 14 publications

(4 citation statements)

References 42 publications

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“…The excellent electrocaloric performance of the BCZT-Li ceramics can be attributed to the polymorphic ferroelectric phases coexistence and ferroelectric phase transition, which can be investigated by the Raman spectroscopy due to its sensitivity to crystal lattice vibration, domain configuration dynamics and ferroelectric phase transition [28,33,34] (Figure 4 and Figure 5). As shown in Figure 4a, the Raman modes around 150 cm −1 and 740 cm −1 wavenumbers weaken gradually, and the Raman mode peak around 520 cm −1 wavenumber broadens gradually with the increase of temperature, moreover the intensity of these Raman modes peaks decreases apparently when the temperature approaches to 120 °C.…”

Section: Resultsmentioning

confidence: 99%

“…Temperature dependence of polarization-electric field (P-E) hysteresis loops were tested by a Radiant Precision Premier LC ferroelectric material test system attached with a Sigma Model M10 chamber (Sigma Systems Corp., San Diego, CA, USA). Raman spectra upon heating were measured by a Horiba LabRAM HR Evolution Raman spectrometer (HORIBA Instruments Incorporated, Ann Arbor, MI, USA) equipped with a Linkam THMS600 heating/cooling stage [28]. …”

Section: Methodsmentioning

confidence: 99%

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Large Electrocaloric Effect in Lead-Free (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 Ceramics Prepared via Citrate Route

et al. 2017

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Abstract:The 1 wt % Li-doped (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 (BCZT-Li) ceramics prepared by the citrate method exhibit improved phase purity, densification and electrical properties, which provide prospective possibility to develop high-performance electrocaloric materials. The electrocaloric effect was evaluated by phenomenological method, and the BCZT-Li ceramics present large electrocaloric temperature change ∆T, especially large electrocaloric responsibility ξ = ∆T max /∆E max , which can be comparable to the largest values reported in the lead-free piezoelectric ceramics. The excellent electrocaloric effect is considered as correlating with the coexistence of polymorphic ferroelectric phases, which are detected by the Raman spectroscopy. The large ξ value accompanied by decreased Curie temperature (around 73 • C) of the BCZT-Li ceramics prepared by the citrate method presents potential applications as the next-generation solid-state cooling devices.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Large Electrocaloric Effect in Lead-Free (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 Ceramics Prepared via Citrate Route

et al. 2017

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“…Raman spectroscopy, as an efficient test tool, is extremely sensitive to changes in the local lattice structure caused by ferroelectric phase transitions. 27 It can be revealed efficiently by the temperature-induced ferroelectric phase transition. Figure 6 shows the Raman curves of (001) pc and (110) pc at room temperature.…”

Section: Resultsmentioning

confidence: 99%

Electrical performance and ferroelectric phase transition characteristic in different oriented 0.73PMN‐0.27PT single crystals

Deng

Fang

et al. 2021

J Am Ceram Soc.

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The electrical and optical properties of (001)-and (110)-oriented 0.73 Pb(Mg 1/3 Nb 2/3 )O 3 -0.27PbTiO 3 single crystals are systematically investigated at various temperatures, both of which present a series of ferroelectric phase transition processes. Dielectric performance measurements reveal that the ferroelectric phase transition occurs over a temperature range, rather than at one temperature point. By testing the ferroelectric hysteresis P-E curves as well as bipolar and unipolar electric field-induced strain S-E curves, the values of remnant polarization, coercive field, maximum strain, and converse piezoelectric constant d 33 * change considerably near the phase transition temperatures. Simultaneously, the 0.73PMN-0.27PT single crystals with (001)-and (110)-orientations under a low electric field show ultrahigh d 33 * values of 3540 and 2817 pm/V, respectively, which can be attributed to the electric field-induced monoclinic and orthorhombic phases, respectively. The series of ferroelectric phase transitions upon heating, that is, from rhombohedral ferroelectric to monoclinic/orthorhombic, followed by from monoclinic/orthorhombic to tetragonal, and finally from tetragonal to cubic paraelectric, are further investigated via polarized light microscopy and Raman spectroscopy.

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“…Because of its sensitivity to crystal lattice vibration, Raman spectroscopy is a powerful tool for studying the ferroelectric phase transition and local crystal symmetry [25,26]. Figure 1 displays Raman spectra of 0.4BCZT-0.6BTSn ceramic recorded at room temperature.…”

Section: Raman Spectroscopy Analysismentioning

confidence: 99%

Enhancement of the electrocaloric effect in the 0.4BCZT-0.6BTSn ceramic synthesized by sol-gel route

Khardazi,

Zaitouni,

Neqali

et al. 2023

Mater. Res. Express

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The lead-free ferroelectric 0.4Ba0.85Ca0.15Zr0.10Ti0.90O3–0.6BaTi0.89Sn0.11O3 (0.4BCZT–0.6BTSn) ceramics were successfully prepared by the sol–gel process. Raman spectroscopy was used to examine the structural properties of the 0.4BCZT-0.6BTSn sample. The findings indicate that the sample was well crystallized into a single perovskite structure. The phase transitions of the studied sample have been investigated using the DSC technique. The electrocaloric effect (ECE) properties were indirectly determined using the Maxwell approach. Under a relatively low applied electric field of 30 kV cm−1, the results show enhanced electrocaloric temperature change and entropy change of ΔT = 1.32 K and ΔS = 1.41 J/kg.K, respectively. Besides, the electrocaloric responsivity (ξ max = 0.45 K·mm/kV) obtained is among the highest reported values in pb-free ferroelectrics near room temperature. These findings demonstrate that the lead-free 0.4BCZT–0.6BTSn ceramic is a promising candidate for solid-state cooling applications.

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Temperature-dependent Raman spectra and electrical properties of 0.69Pb(Mg1/3Nb2/3)O3–0.31PbTiO3 single crystals

Cited by 14 publications

References 42 publications

Large Electrocaloric Effect in Lead-Free (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 Ceramics Prepared via Citrate Route

Large Electrocaloric Effect in Lead-Free (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 Ceramics Prepared via Citrate Route

Electrical performance and ferroelectric phase transition characteristic in different oriented 0.73PMN‐0.27PT single crystals

Enhancement of the electrocaloric effect in the 0.4BCZT-0.6BTSn ceramic synthesized by sol-gel route

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