Bi3-xMxTiTaO9(M = La or Nd) Ceramics with High Mechanical Quality FactorQm

Suzuki, Muneyasu; Nagata, Hajime; Ohara, Jin; Funakubo, Hiroshi; Takenaka, Tadashi

doi:10.1143/jjap.42.6090

Cited by 80 publications

(36 citation statements)

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“…This indicates that Nd doping brings about a strong diffuse ferroelectric-paraelectric phase transition. The dielectric behaviors in the present BNNT− x system are consistent with the studies on lanthanide doped BLSFs, such as Nd− Bi 3 TaTiO 9 ͑m =2͒, 28 Sm-BNTO ͑m =2͒, 16 27 Compared with BNTO ͑x =0͒, the losses in the Nd-doped samples were reduced. The inset in Fig.…”

Section: B Dielectric Propertiessupporting

confidence: 89%

“…This x value is considered to be the solubility limit of Nd element on the A sites in the pseudoperovskite structure. 24,28 A two slope region in the relationship between T C and lanthanide substitution content was also reported in Nd-and La-doped Bi 3 TaTiO 9 ͑m =2͒, 28 Bi 4 Ti 3 O 12 ͑m =3͒, 24 Na 0. Figure 4 illustrates curves of I-E and P-E loops of BNNT− x ceramics measured at 200°C and 10 Hz.…”

Section: B Dielectric Propertiessupporting

confidence: 52%

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The effect of Nd substitution on the electrical properties of Bi3NbTiO9 Aurivillius phase ceramics

Hong-tao

Yan

Reece

2009

Journal of Applied Physics

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Effect of lattice occupation behavior of Li+ cations on microstructure and electrical properties of (Bi1/2Na1/2)TiO3-based lead-free piezoceramics J. Appl. Phys. 109, 054102 (2011) The effect of Nd substitution on the microstructures and electrical properties of Aurivillius phase ferroelectric Bi 3 NbTiO 9 -based ceramics has been studied. All of the Bi 3−x Nd x NbTiO 9 ͑0 Յ x Յ 1͒ ceramics are ferroelectrics. The Curie point T C decreased with increasing Nd doping content x. The Bi 3−x Nd x NbTiO 9 ceramics exhibited a sharp ferroelectric-paraelectric phase transition at small x values ͑x Յ 0.6͒, whereas a diffuse phase transition was observed at higher x values ͑x Ն 0.8͒. Both the piezoelectric constant d 33 and the dc electrical resistivity of Bi 3 NbTiO 9 ceramics were greatly enhanced by Nd substitution on the A sites. The improved properties can be attributed to the fact that Nd substitution depressed the generation of oxygen vacancies. A combination of high d 33 values, high resistivity, and high T C points ͑Ͼ700°C͒ suggests that the Bi 3−x Nd x NbTiO 9 ceramics with x Յ 0.6 could be good candidates for high-temperature piezoelectric applications.

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Section: B Dielectric Propertiessupporting

confidence: 89%

Section: B Dielectric Propertiessupporting

confidence: 52%

The effect of Nd substitution on the electrical properties of Bi3NbTiO9 Aurivillius phase ceramics

Hong-tao

Yan

Reece

2009

Journal of Applied Physics

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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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“…To conquer the toxicity of widely used PZT-based piezoelectric materials, many lead-free materials, including Bi-based [1,2], BaTiO 3 -based [3,4], and alkaline niobatebased compounds [5][6][7][8], have been studied. Among these materials, the perovskite structure (Na,K)NbO 3 forms a morphotropic phase boundary, similar to the PZT, with the ratio of sodium to potassium near 1 : 1.…”

Section: Introductionmentioning

confidence: 99%

BiFeO₃-doped (Na_0.5K_0.5)NbO₃lead-free piezoelectric ceramics

Sun

Chen

et al. 2008

Science and Technology of Advanced Materials

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Lead-free piezoelectric ceramics (1 − x)(Na 0.5 K 0.5 )NbO 3 -xBiFeO 3 (x = 0 ∼ 0.07) were synthesized by the solid-state reaction. Differential scanning calorimetry (DSC) measurements revealed that an increase in the amount of BiFeO 3 dopant resulted in a decrease in the orthorhombic-tetragonal and tetragonal-cubic phase transition temperature of the material. One percent BiFeO 3 additive suppressed grain growth, which not only benefits the sintering of ceramics but also enhances the piezoelectric and ferroelectric properties, where d 33 = 145pC/N, k p = 0.31, Q m = 80, P r = 11.3 µC cm −2 and E c = 16.5 kV cm −1 . As x BF > 0.01, both piezoelectric and ferroelectric properties decreased rapidly with an increasing amount of dopant.

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Bi_3-xM_xTiTaO₉(M = La or Nd) Ceramics with High Mechanical Quality FactorQ_m

Cited by 80 publications

References 1 publication

The effect of Nd substitution on the electrical properties of Bi3NbTiO9 Aurivillius phase ceramics

The effect of Nd substitution on the electrical properties of Bi3NbTiO9 Aurivillius phase ceramics

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

BiFeO₃-doped (Na_0.5K_0.5)NbO₃lead-free piezoelectric ceramics

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Bi3-xMxTiTaO9(M = La or Nd) Ceramics with High Mechanical Quality FactorQm

Cited by 80 publications

References 1 publication

The effect of Nd substitution on the electrical properties of Bi3NbTiO9 Aurivillius phase ceramics

The effect of Nd substitution on the electrical properties of Bi3NbTiO9 Aurivillius phase ceramics

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

BiFeO3-doped (Na0.5K0.5)NbO3lead-free piezoelectric ceramics

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Product

Resources

About

Bi_3-xM_xTiTaO₉(M = La or Nd) Ceramics with High Mechanical Quality FactorQ_m

BiFeO₃-doped (Na_0.5K_0.5)NbO₃lead-free piezoelectric ceramics