Origin of Improvement in Mechanical Quality Factor in Acceptor-Doped Relaxor-Based Ferroelectric Single Crystals

Limei Zheng, Liya Yang, Yanran Li, Xiaoyan Lu, Da Huo, Weiming Lü, Rui Zhang, Bin Yang, Wenwu Cao

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The mechanical quality factor Qm in ferroelectric materials can be improved via acceptor doping to extend their application in high-power devices. It is generally believed that the improvement of Qm originates from the pinning effect of internal bias. However, the contributions from restricted spontaneous polarization (PS) rotation and clamped domain-wall motion are difficult to separate, leading to some ambiguities about the effect of doping. We report on a strong anisotropic pinning effect in Mn-doped 0.27Pb(In1/2Nb1/2)O3-0.46Pb(Mg1/3Nb2/3)O3-0.27PbTiO3 single crystals and investigate the related mechanism. We observe that the domain-wall motion is not clamped by the internal bias but are strongly pinned by charged defects at the charged domain walls, whereas the PS rotation is suppressed by the internal bias. We also confirm that the enhancement of longitudinal factor Q33 is attributed mainly to the restricted polarization rotation, whereas the enhancement of shear factor Q15 is ascribed to both the restricted polarization rotation and the clamped domain-wall motion. Our results reveal the fundamental mechanism of the acceptor doping effects in relaxor-based ferroelectric materials, and they also provide important design principles to achieve high-Qm piezoelectric materials to satisfy the demands of high-power electromechanical devices.

Original languageEnglish (US)
Article number064028
JournalPhysical Review Applied
Volume9
Issue number6
DOIs
StatePublished - Jun 19 2018

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domain wall
Q factors
ferroelectric materials
single crystals
polarization
electromechanical devices
augmentation
ambiguity
shear
defects

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Zheng, Limei ; Yang, Liya ; Li, Yanran ; Lu, Xiaoyan ; Huo, Da ; Lü, Weiming ; Zhang, Rui ; Yang, Bin ; Cao, Wenwu. / Origin of Improvement in Mechanical Quality Factor in Acceptor-Doped Relaxor-Based Ferroelectric Single Crystals. In: Physical Review Applied. 2018 ; Vol. 9, No. 6.
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abstract = "The mechanical quality factor Qm in ferroelectric materials can be improved via acceptor doping to extend their application in high-power devices. It is generally believed that the improvement of Qm originates from the pinning effect of internal bias. However, the contributions from restricted spontaneous polarization (PS) rotation and clamped domain-wall motion are difficult to separate, leading to some ambiguities about the effect of doping. We report on a strong anisotropic pinning effect in Mn-doped 0.27Pb(In1/2Nb1/2)O3-0.46Pb(Mg1/3Nb2/3)O3-0.27PbTiO3 single crystals and investigate the related mechanism. We observe that the domain-wall motion is not clamped by the internal bias but are strongly pinned by charged defects at the charged domain walls, whereas the PS rotation is suppressed by the internal bias. We also confirm that the enhancement of longitudinal factor Q33 is attributed mainly to the restricted polarization rotation, whereas the enhancement of shear factor Q15 is ascribed to both the restricted polarization rotation and the clamped domain-wall motion. Our results reveal the fundamental mechanism of the acceptor doping effects in relaxor-based ferroelectric materials, and they also provide important design principles to achieve high-Qm piezoelectric materials to satisfy the demands of high-power electromechanical devices.",
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Origin of Improvement in Mechanical Quality Factor in Acceptor-Doped Relaxor-Based Ferroelectric Single Crystals. / Zheng, Limei; Yang, Liya; Li, Yanran; Lu, Xiaoyan; Huo, Da; Lü, Weiming; Zhang, Rui; Yang, Bin; Cao, Wenwu.

In: Physical Review Applied, Vol. 9, No. 6, 064028, 19.06.2018.

Research output: Contribution to journalArticle

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