Effect of La content on dielectric, ferroelectric and electro-optic properties of Pb(Mg1/3Nb2/3)O3–PbTiO3 transparent ceramics

Ji, Wenlong; He, Xiyun; Cheng, Weiguo; Qiu, Ping; Zeng, Xia; Xia, Bin; Wang, Dong

doi:10.1016/j.ceramint.2014.07.138

Cited by 20 publications

(6 citation statements)

References 24 publications

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“…Diffuse phase transition is usually observed in perovskites with random distribution of different types of ions on structurally identical sites in lattice [30][31]. It must be noted that diffuse phase transition exhibit a broad instead of a sharp change of structure and properties at the Curie point in normal ferroelectric materials [32][33]; consequently, the phase transition characteristics of such materials are known to diverge from the characteristic Curie-Weiss behavior and can be described by a modified Curie-Weiss formula [34]. (3) where, C is Curie-Weiss constant and the degree of diffuseness, γ (1≤γ≤2; where γ=1 gives a sharp change while an ideal diffuse phase transition gives γ=2).…”

Section: Resultsmentioning

confidence: 99%

Structural and dielectric properties of Pb(1−x)(Na0.5Sm0.5) x TiO3 ceramics

Yadav

Anita

Kumar

et al. 2017

J Mater Sci: Mater Electron

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Abstract:A correlation between structure and vibrational properties related to a ferroelectric to paraelectric phase transition in perovskite Pb (1-x) (Na 0.5 Sm 0.5 ) x TiO 3 (0≤x≤0.5) (PNST-x) polycrystalline powders is discussed. Substitution leads to reduction of tetragonality which is associated with a shift of the phase transition to lower temperatures. The nature of the phase transition gets diffused with increasing substitution.Keywords: Structural properties, Raman spectroscopy, Dielectric, Phase transition. IntroductionPbTiO 3 is known to be a strong ferroelectric perovskite compound. A structural phase transition from tetragonal (P4mm) to cubic (Pm3m) phase at 763K is observed in PbTiO 3 . Tetragonality, measured by c/a ratio is frequently related to ferroelectric properties. For PbTiO 3 , c/a ratio is ~1.06 at room temperature [1][2][3][4][5]. Properly substituted PbTiO 3 has different applications as capacitors, nonvolatile memories, ultrasonic transducers, pyroelectric infrared sensors, piezoelectric actuators due to their highly anisotropic nature of elastic, piezoelectric, and electro-optic properties etc. [6][7][8].Physical properties and device applications of ferroelectric perovskite (ABO 3 ) compounds like PbTiO 3 and BaTiO 3 have been studied extensively due to their technological importance. Based on the fact that PbTiO 3 is toxic and volatile in nature and not environmental friendly many reduced lead content ferroelectric materials has been investigated, such as

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Section: Resultsmentioning

confidence: 99%

Structural and dielectric properties of Pb(1−x)(Na0.5Sm0.5) x TiO3 ceramics

Yadav

Anita

Kumar

et al. 2017

J Mater Sci: Mater Electron

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“…This phenomenon could be explained by the improvement of mobility of the domain walls. It has been revealed that the mobility of domain walls in the La 3 þ -modified PMN-PT ceramics can be improved by lowering the oxygen vacancy concentration resulted from the La 3 þ doping [9]. Therefore, the T m shifts to a lower value with increasing La content.…”

Section: Phase Structurementioning

confidence: 99%

“…The previous work [9] has reported that the value of n can be approximated to be a constant when the La content varies in the range from 2.5 mol% to 6.5 mol% with a fixed PMN/PT ratio. Thus, in this study, the PLMNT ceramics with the compositions of 3.5/72/28, 3.5/75/25 and 3.5/78/ 22 were prepared for the measurement of the n value, where the La content is 3.5% within the range of 2.5% to 6.5%.…”

Section: Optical Transmittance and Eo Effectmentioning

confidence: 99%

“…Electro-optic (EO) effect, i.e., the birefringence variation caused by an externally applied electric field, has potential applications in optical devices [1][2][3][4][5][6][7][8][9][10][11][12]. As EO benchmark materials, LiNbO 3 single crystals have been widely used in the field of current telecommunication.…”

Section: Introductionmentioning

confidence: 99%

“…The EO coefficients are about 10 times greater than those of the PLZT transparent ceramics. Such properties make PLMNT ceramics ideal and promising candidate materials in the low-voltagedriving optical dynamic devices [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of PMN/PT ratio on optical and electro-optic properties of PLMNT transparent ceramics

Zeng

et al. 2015

Ceramics International

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Ultratransparent PMN‐PT Electro‐Optic Ceramics and Its Application in Optical Communication

Fang

Jiang

Tian

et al. 2021

Advanced Optical Materials

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Electro‐optic (E‐O) materials are essential to modern information society, especially for optical switches, modulators, and filters in optical communication. In this paper, ultrahigh transparent (1−x)Pb(Mg1/3Nb2/3)O3‐xPbTiO3 (PMN‐PT) relaxor ferroelectric ceramics are fabricated. The effect of Sm‐doping content (0, 0.5, 1.0, 1.5, and 2.0 mol%) on PMN‐PT transparent ceramics is systematically investigated on the optical transparency, electro‐optic coefficient, extinction ratio, and half‐wave voltage. Results indicate that 0.5 mol% Sm‐doped PMN‐PT ceramic shows the optimal comprehensive performance, including high transparency of 69.6%, large quadratic E‐O coefficient of 35 × 10–16 m2 V−2, decent extinction ratio of 32 dB, and low half‐wave voltage (113 V at d = L = 1 mm). An electro‐optic modulator is designed based on the PMN‐PT transparent ceramics and its application in optical communication is realized, such as rapid information modulation, analog signal (audio frequency), and digital signal (graphic patterns) transmission. These results indicate that Sm‐doped PMN–xPT transparent ceramics are promising candidates for E‐O modulation applications.

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Effect of La content on dielectric, ferroelectric and electro-optic properties of Pb(Mg1/3Nb2/3)O3–PbTiO3 transparent ceramics

Cited by 20 publications

References 24 publications

Structural and dielectric properties of Pb(1−x)(Na0.5Sm0.5) x TiO3 ceramics

Structural and dielectric properties of Pb(1−x)(Na0.5Sm0.5) x TiO3 ceramics

Effects of PMN/PT ratio on optical and electro-optic properties of PLMNT transparent ceramics

Ultratransparent PMN‐PT Electro‐Optic Ceramics and Its Application in Optical Communication

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