Properties of the Elastic Anomaly in SrBi2Nb2O9-based Ceramics

Sawada, Takuya; Andõ, Akira; Sakabe, Yukio; Damjanović, Dragan; Setter, N.

doi:10.1143/jjap.42.6094

Cited by 47 publications

(36 citation statements)

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“…A number of researches on lead-free piezoelectric ceramics such as alkaline niobiate (Saito et al 2004;Matsubara et al 2005), BaTiO 3 -based (Yu et al 2002), Bi-layered (Sawada et al 2003), bismuth sodium titanate (Zhou and Xin 2007;Zhou et al 2009) and tungsten bronze-type materials (Suzuki et al 2003) have been recently published. In this way, niobates (K,Na)NbO 3 (KNN)-based ceramics have showed good piezoelectric and electric properties, high Curie temperature and environmental innocuity (Maeder et al 2004;Wang et al 2004;Alkoy and Papila 2010).…”

Section: Introductionmentioning

confidence: 99%

Electrical and microstructural properties of CaTiO 3 -doped K 1/2 Na 1/2 NbO 3 -lead free ceramics

et al. 2011

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Abstract. Microstructure, electrical properties and dielectric behaviour of K 1/2 Na 1/2 NbO 3 (KNN) and CaTiO 3 -modified K 1/2 Na 1/2 NbO 3 (CTO-KNN) systems, were investigated. Discs doped with 0 to 0·55% mol of CaTiO 3 (CTO) were sintered at 1125 • C for 2 h. Although minority phases were found in doped samples, CaTiO 3 was not detected. It was also observed that CTO changed the microstructure and grain size of KNN drastically. Also, the Curie temperature and permittivity values decreased. Addition of CTO between 0·15 and 0·45 mol% decreases the density and dielectric values. Samples prepared with higher content of CTO than 0·45 mol% showed better electrical properties.

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Section: Introductionmentioning

confidence: 99%

Electrical and microstructural properties of CaTiO 3 -doped K 1/2 Na 1/2 NbO 3 -lead free ceramics

et al. 2011

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“…Bismuth layer-structured ferroelectrics (BLSF) are promising lead-free piezoelectric materials [1][2][3][4]. BLSF ceramics offer such features as small dielectric constant ε r [5,6], high Curie temperature T c [5][6][7], high mechanical quality factor Q m [8][9][10][11][12][13][14], and weak temperature dependence of the resonant frequency TC-fr [15][16][17][18]. These features suggest that BLSF ceramics might be usable for filters, resonators, and other components.…”

Section: Introductionmentioning

confidence: 99%

“…For example, a relatively high value (about 9000) was reported for BLSF ceramics based on SrBi 2 Nb 2 O 9 [14,15]. However, those studies were carried out for different resonant modes, using different methods of measurement, and hence it is difficult to compare the reported values of Q m as a material constant of specific BLSF compositions.…”

Section: Introductionmentioning

confidence: 99%

Bismuth layer‐structured ferroelectric ceramics with high mechanical quality factor

Nagata

Hiruma

Suzuki

et al. 2008

Elect Comm in Japan

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SUMMARYThe piezoelectric properties in some bismuth layerstructured ferroelectric (BLSF) ceramics were investigated focusing on a mechanical quality factor, Q m . Many BLSF compositions with various Curie temperatures, T c , were selected in this study, and the Q m values of (33) mode were plotted as a function of their Curie temperature, T c . The Q m increased with increasing the T c in the low-T c compositions below 500 °C. It is considered to relate with the domain wall pinning because the coercive field E c also increased with increasing the T c . However, in the high-T c compositions above 750 °C, the Q m decreased with increasing the T c , because of the difficulties in poling treatment due to the E c . On the other hand, high Q m values exceeding 10,000 were obtained in the intermediate-T c compositions between 500 and 750 °C. These values are quite high as the piezoelectric ceramics. The key point of the high Q m in these compositions is the poling process at high temperature of 300 °C.

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“…1,2 However, waste products containing Pb often cause a crucial environmental problem for underground water. Therefore, the development of lead-free piezoelectric materials, such as tungsten bronze type materials, [3][4][5] bismuth (Bi) layer-structured materials, 6,7 and perovskite type materials, [8][9][10][11][12][13][14][15][16][17][18][19][20] has been widely studied. Among the various lead-free materials, Bi layerstructured materials have stable temperature properties and high Q m values 6,7 and are thus regarded as one of the best lead-free piezoelectric materials.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric properties of lead-free (Na_0.5Bi_0.5)TiO₃–(Na_0.5K_0.5)NbO₃–BaTiO₃ ceramics

et al. 2008

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The microstructural evolution and piezoelectric properties of lead-free ceramics (0.98-x)(Na 0.5 Bi 0.5 )TiO 3 -x(Na 0.5 K 0.5 )NbO 3 -0.02BaTiO 3 (0 ഛ x ഛ 0.98, abbreviated as (0.98-x)NBT-xNKN-0.02BT) were investigated. The effects of the amount of NKN on the crystal structure, microstructural evolution, and piezoelectric properties were examined. The 0.93NBT-0.05NKN-0.02BT ceramics having a lower NKN content gave good performances with piezoelectric properties of d 33 ‫ס‬ 140 pC/N and k p ‫ס‬ 21%, because of the soft additive Nb 5+ ions at the B sites. However, a paraelectric cubic phase was observed in the wide range of compositions between x ‫ס‬ 0.1 and x ‫ס‬ 0.9. At a higher NKN content of x > 0.9, a morphotropic phase boundary (MPB) between the tetragonal and orthorhombic phases was found in the 0.015NBT-0.965NKN-0.02BT ceramics, and the piezoelectric properties were enhanced (d 33 ‫ס‬ 135 pC/N, k p ‫ס‬ 29%). The piezoelectric properties of this system were closely related to its crystal structure.

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Properties of the Elastic Anomaly in SrBi₂Nb₂O₉-based Ceramics

Cited by 47 publications

References 2 publications

Electrical and microstructural properties of CaTiO 3 -doped K 1/2 Na 1/2 NbO 3 -lead free ceramics

Electrical and microstructural properties of CaTiO 3 -doped K 1/2 Na 1/2 NbO 3 -lead free ceramics

Bismuth layer‐structured ferroelectric ceramics with high mechanical quality factor

Piezoelectric properties of lead-free (Na_0.5Bi_0.5)TiO₃–(Na_0.5K_0.5)NbO₃–BaTiO₃ ceramics

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Properties of the Elastic Anomaly in SrBi2Nb2O9-based Ceramics

Cited by 47 publications

References 2 publications

Electrical and microstructural properties of CaTiO 3 -doped K 1/2 Na 1/2 NbO 3 -lead free ceramics

Electrical and microstructural properties of CaTiO 3 -doped K 1/2 Na 1/2 NbO 3 -lead free ceramics

Bismuth layer‐structured ferroelectric ceramics with high mechanical quality factor

Piezoelectric properties of lead-free (Na0.5Bi0.5)TiO3–(Na0.5K0.5)NbO3–BaTiO3 ceramics

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Properties of the Elastic Anomaly in SrBi₂Nb₂O₉-based Ceramics

Piezoelectric properties of lead-free (Na_0.5Bi_0.5)TiO₃–(Na_0.5K_0.5)NbO₃–BaTiO₃ ceramics