AC Switching of Relaxor PLZT Ceramics

Shur, V. Ya.; Rumyantsev, E. L.; Lomakin, G. G.; Yakutova, O. V.; Pelegov, D. V.; Sternberg, A.; Kosec, M.

doi:10.1080/00150190590935337

Cited by 20 publications

(8 citation statements)

References 24 publications

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“…The features shown in Fig. are also similar to observations in relaxor materials such as PLZT 8/36/65, Pb(Sc 1/2 Nb 1/2 )O 3 , and Ba(Ti 0.7 Zr 0.3 )O 3 . A recent report by Jo et al .…”

Section: Discussionsupporting

confidence: 86%

Relaxor to Ferroelectric Transitions in (Bi_1/2Na_1/2)TiO₃–Bi(Zn_1/2Ti_1/2)O₃Solid Solutions

Patterson

Cann

2012

J. Am. Ceram. Soc.

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The local dynamics of the lead-free relaxor 0.964Na 1/2 Bi 1/2 TiO 3 − 0.036BaTiO 3 (NBT-3.6BT) have been investigated by a combination of quasielastic neutron scattering (QENS) and ab initio molecular dynamics simulations. In a previous paper, we were able to show that the tetragonal platelets in the microstructure are crucial for understanding the dielectric properties of NBT-3.6BT [F. Pforr et al., Phys. Rev. B 94, 014105 (2016)]. To investigate their dynamics, ab initio molecular dynamics simulations were carried out using Na 1/2 Bi 1/2 TiO 3 with 001 cation order as a simple model system for the tetragonal platelets in NBT-3.6BT. Similarly, 111-ordered Na 1/2 Bi 1/2 TiO 3 was used as a model for the rhombohedral matrix. The measured single crystal QENS spectra could be reproduced by a linear combination of calculated spectra. We find that the relaxational dynamics of NBT-3.6BT are concentrated in the tetragonal platelets. Chaotic stages, during which the local tilt order changes incessantly on the timescale of several picoseconds, cause the most significant contribution to the quasielastic intensity. They can be regarded as an excited state of tetragonal platelets, whose relaxation back into a quasistable state might explain the frequency dependence of the dielectric properties of NBT-3.6BT in the 100 GHz to THz range. This substantiates the assumption that the relaxor properties of NBT-3.6BT originate from the tetragonal platelets.

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“…The features shown in Fig. are also similar to observations in relaxor materials such as PLZT 8/36/65, Pb(Sc 1/2 Nb 1/2 )O 3 , and Ba(Ti 0.7 Zr 0.3 )O 3 . A recent report by Jo et al .…”

Section: Discussionsupporting

confidence: 86%

Relaxor to Ferroelectric Transitions in (Bi_1/2Na_1/2)TiO₃–Bi(Zn_1/2Ti_1/2)O₃Solid Solutions

Patterson

Cann

2012

J. Am. Ceram. Soc.

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“…On the other hand, for the critical composition x ¼ 0.035, the polarization hysteresis loop already exhibits a relaxor characteristic at room temperature. In analogous to previously reported some classical lead-containing relaxor ferroelectrics (PLZT8/36/65 and Pb(Sc 0.5 Nb 0.5 )O 3 ) [54,55], and BNTeBTeKNN [31], BNTeBKTeKNN [56], and BNTeBKTeST [27], the temperature-dependent features shown in Fig. 8 indicates that the pinched polarization loops are not uncommon in relaxors and field-induced relaxor-to-ferroelectric phase transitions can be considered as a common origin in Bi-based perovskites [27,33].…”

Section: Resultssupporting

confidence: 79%

Structure evolution and large strain response in BNT–BT lead-free piezoceramics modified with Bi(Ni0.5Ti0.5)O3

Bai

et al. 2015

Journal of Alloys and Compounds

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“…It is important to point out that, due to the scarcely found ferroelectric hysteresis results in the literature for similar ceramic and/or single crystal PLZT 8/60/40 and PLZT 10/60/40 compositions, no further comparison of the obtained results in this study can be carried out. However, the obtained ferroelectric properties for the studied PLZT compositions shown to be higher than those obtained for several PLZT compositions near the MPB (x/65/35) [37] and some others reported classical relaxor ferroelectrics, at room temperature [38]. It can be noted from Fig.…”

Section: Methodsmentioning

confidence: 75%

Interrelationship between phase transition characteristics and piezoelectric response in lead lanthanum zirconate titanate relaxor ceramics

et al. 2012

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Dielectric and piezoelectric responses are investigated in relaxor-like lanthanum-modified lead zirconate titanate (PLZT) ceramics, for a La/Zr/Ti ratio of x/60/40 (x = 8 and 10 at.%), obtained by the conventional ceramic method. No significant differences were observed from the room temperature ferroelectric properties, for both PLZT compositions. On the other hand, from evaluation of the nonlinear dielectric response in terms of the Rayleigh’s model, a typical ‘soft’ behaviour is achieved in both materials, although the increments of the dielectric losses are slightly higher than the predicted by this model. The piezoelectric coefficient shows a remarkable increment with the applied dynamics stress, nevertheless without noticeable differences as a function of the lanthanum concentration. However, a significant difference is displayed in the weak-field direct longitudinal piezoelectric response. The dielectric properties revealed a higher diffuseness degree of the phase transition for the highest lanthanum content composition (PLZT 10/60/40). Thus, the observed difference in the piezoelectric response is discussed based on the nature of the phase transition in the studied relaxor materials.Postprint (published version

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AC Switching of Relaxor PLZT Ceramics

Cited by 20 publications

References 24 publications

Relaxor to Ferroelectric Transitions in (Bi_1/2Na_1/2)TiO₃–Bi(Zn_1/2Ti_1/2)O₃Solid Solutions

Relaxor to Ferroelectric Transitions in (Bi_1/2Na_1/2)TiO₃–Bi(Zn_1/2Ti_1/2)O₃Solid Solutions

Structure evolution and large strain response in BNT–BT lead-free piezoceramics modified with Bi(Ni0.5Ti0.5)O3

Interrelationship between phase transition characteristics and piezoelectric response in lead lanthanum zirconate titanate relaxor ceramics

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AC Switching of Relaxor PLZT Ceramics

Cited by 20 publications

References 24 publications

Relaxor to Ferroelectric Transitions in (Bi1/2Na1/2)TiO3–Bi(Zn1/2Ti1/2)O3Solid Solutions

Relaxor to Ferroelectric Transitions in (Bi1/2Na1/2)TiO3–Bi(Zn1/2Ti1/2)O3Solid Solutions

Structure evolution and large strain response in BNT–BT lead-free piezoceramics modified with Bi(Ni0.5Ti0.5)O3

Interrelationship between phase transition characteristics and piezoelectric response in lead lanthanum zirconate titanate relaxor ceramics

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Relaxor to Ferroelectric Transitions in (Bi_1/2Na_1/2)TiO₃–Bi(Zn_1/2Ti_1/2)O₃Solid Solutions

Relaxor to Ferroelectric Transitions in (Bi_1/2Na_1/2)TiO₃–Bi(Zn_1/2Ti_1/2)O₃Solid Solutions