Dielectric susceptibility and the order of ferroelectric phase transitions

Draegert, D.; Singh, Shivani

doi:10.1016/0038-1098(71)90225-0

Cited by 43 publications

(23 citation statements)

References 4 publications

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“…Nevertheless, the ratio of the Curie‐Weiss constants ( C 2 / C 1 ) near different phase transition temperatures obviously decreases for multiphase coexistent materials [Figure (d)], where C 2 and C 1 are, respectively, the constants beyond and below the phase transition temperature). This result demonstrates that second‐order transition‐like behavior can be observed by forming multiphase coexistence ( C 2 / C 1 >4 for the first‐order transition and C 2 / C 1 <4 for the second‐order transition) . However, the existence of thermal hysteresis at T O‐T and T C indicates that the phase transition still belongs to the first order (Figure S3) .…”

Section: Resultsmentioning

confidence: 87%

“…This result demonstrates that second-order transition-like behavior can be observed by forming multiphase coexistence (C 2 /C 1 >4 for the first-order transition and C 2 /C 1 <4 for the second-order transition). 40 However, the existence of thermal hysteresis at T O-T and T C indicates that the phase transition still belongs to the first order ( Figure S3). 41,42 In addition, thermal hysteresis (T R-O and T O-T ) was also found in previously reported KNN-based ceramics with multiphase coexistence.…”

Section: Resultsmentioning

confidence: 99%

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Second‐order‐transition like characteristic contributes to strain temperature stability in (K, Na)NbO₃‐based materials

et al. 2019

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High strain and good temperature stability are contradictory properties in (K, Na) NbO 3 (KNN)-based materials. Herein, good temperature stability with high strain is obtained in a multiphase coexistent [ie, orthorhombic-tetragonal (O-T) and rhombohedral-orthorhombic-tetragonal (R-O-T)] KNN. A second-order transition-like characteristic should contribute to the temperature stability, in which an intrinsic lattice structure forms a bridge between them. The observed second-order transition-like characteristic is due to the reduced discrepancy among different lattice symmetries and a broadened temperature region for the phase transition. These integrated factors can slow the latent heat in a first-order transition and extend it over a wide temperature region, thereby exhibiting second-order transition-like behavior.Correspondingly, the abrupt increase in strain near the phase transition temperature significantly slows. In addition, the appearance of pure tetragonal symmetry (P4mm) is deferred to a much higher temperature than T O-T , in which the strain will inevitably decrease. As a result, good temperature stability with a high strain response can be realized in multiphase coexistent KNN materials, including d 33 *=448 pm/V, -27.5%≤fluctuation≤4.2% for O-T, and d 33 *=446 pm/V, -17.5%≤fluctuation≤7.6%for R-O-T, over the whole temperature range 25 °C-190 °C. K E Y W O R D S(K, Na)NbO3, multiphase coexistence, second-order transition, strain, temperature stability

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Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Second‐order‐transition like characteristic contributes to strain temperature stability in (K, Na)NbO₃‐based materials

et al. 2019

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“…This is a common feature for the second-order phase transition. Moreover, Draegert and Singh 18 proposed that the ferroelectric phase transition can be evaluated by the slopes of Fig. 6.…”

Section: Resultsmentioning

confidence: 99%

Effects of barium substitution on the sintering behavior, dielectric properties of Ca₂Nb₂O₇ferroelectric ceramics

Xiang

Qin³

et al. 2017

J. Adv. Dielect.

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Barium-doped Ca 2 Nb 2 O 7 ceramics were prepared in the form of Ca 2Àx Ba x Nb 2 O 7 (0 x 0.6) by solid-state reaction. The solubility limit of barium in Ca 2 Nb 2 O 7 was found to be x ¼ 0:4 based on X-ray diffraction and Raman spectroscopy analysis. When x 0.4, Ca 2Àx Ba x Nb 2 O 7 solid solutions with a monoclinic perovskites-like layered structure (PLS) were formed, whereas beyond x ¼ 0:4, a secondary phase CaNb 2 O 6 was detected. The dielectric properties obviously depended on the barium substitution. With increasing barium amount, the dielectric constant increased from 33.5 for pure Ca 2 Nb 2 O 7 to 38.6 for x ¼ 0:4 ( f ¼ 1 MHz). The Curie temperature (T c Þ of the x ¼ 0:1 sample was 1280 AE 5 C. The phase transition was confirmed to be the second order.

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“…9 with x values increasing from 0 to 0.23. The phase transition i n Sb 1-x x seems to change gradually from a first-order to a second-order phase transition (2).…”

Section: Bi Si Crystals Grown 1-x Xmentioning

confidence: 94%

Dielectric properties of Sb1−xBixSI crystals

Ishikawa

Shikata

Toyoda

1974

Phys. Stat. Sol. (a)

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Dielectric susceptibility and the order of ferroelectric phase transitions

Cited by 43 publications

References 4 publications

Second‐order‐transition like characteristic contributes to strain temperature stability in (K, Na)NbO₃‐based materials

Second‐order‐transition like characteristic contributes to strain temperature stability in (K, Na)NbO₃‐based materials

Effects of barium substitution on the sintering behavior, dielectric properties of Ca₂Nb₂O₇ferroelectric ceramics

Dielectric properties of Sb1−xBixSI crystals

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Dielectric susceptibility and the order of ferroelectric phase transitions

Cited by 43 publications

References 4 publications

Second‐order‐transition like characteristic contributes to strain temperature stability in (K, Na)NbO3‐based materials

Second‐order‐transition like characteristic contributes to strain temperature stability in (K, Na)NbO3‐based materials

Effects of barium substitution on the sintering behavior, dielectric properties of Ca2Nb2O7ferroelectric ceramics

Dielectric properties of Sb1−xBixSI crystals

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Product

Resources

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Second‐order‐transition like characteristic contributes to strain temperature stability in (K, Na)NbO₃‐based materials

Second‐order‐transition like characteristic contributes to strain temperature stability in (K, Na)NbO₃‐based materials

Effects of barium substitution on the sintering behavior, dielectric properties of Ca₂Nb₂O₇ferroelectric ceramics