Characterization of Bi0.5Na0.5TiO3‐PbTiO3M Dielectric Materials

Kuharuangrong, Sutin; Schulze, Walter A.

doi:10.1111/j.1151-2916.1996.tb08584.x

Cited by 66 publications

(25 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2, the (310) reflection was a single peak for pure BNT and the line splitting of the (310) reflection became obvious with increasing CT content, indicating that the crystal structure turned into a rhombohedral structure as CT was doped. 19 As shown in Fig. 1, the diffraction peaks shifted toward higher angle as the content of CT increased.…”

Section: Resultsmentioning

confidence: 85%

Effects of Ca and Mn Additions on the Microstructure and Dielectric Properties of (Bi0.5Na0.5)TiO3 Ceramics

Yuan

et al. 2011

Journal of Elec Materi

View full text Add to dashboard Cite

Dielectric ceramics based on the solid solution (1 À x)Bi 0.5 Na 0.5 TiO 3 (BNT)-xCaTiO 3 (CT) were synthesized by the conventional solid-state route. BNT with various contents of CT formed a complete solid solution and exhibited a rhombohedral structure. CT in this solid solution with BNT was observed to decrease the dielectric constant at higher temperatures and raise the dielectric constant at lower temperatures. On the other hand, decreased ferroelectricity was observed with increasing CT concentration, resulting in a downward shift of the depolarization temperature and a decrease of the dissipation factor. With the addition of Mn 2+ to 0.86BNT-0.14CT, the temperature characteristics of capacitance were improved (À55°C to 250°C, DC/ C 25°C £ ±15%). By doping with 1.5 wt.% Mn 2+ , the dielectric constant at room temperature reached over 900, with a dielectric loss of less than 1%.

show abstract

Section: Resultsmentioning

confidence: 85%

Effects of Ca and Mn Additions on the Microstructure and Dielectric Properties of (Bi0.5Na0.5)TiO3 Ceramics

Yuan

et al. 2011

Journal of Elec Materi

View full text Add to dashboard Cite

show abstract

“…There are several inconsistent explanations about T d . Some reports indicated that T d is related to the transition between ferroelectric (FE) and antiferroelectric (AFE) phases because double hysteresis loops were observed above T d [3,7]. However, Park [4] and Suchanicz [5] et al found the intermediate phase as mixture of rhombohedral micro-polar regions and a tetragonal non-polar matrix.…”

Section: Resultsmentioning

confidence: 97%

“…BNT belongs to ABO 3 -type perovskites with rhombohedral symmetry at room temperature. Many modifications on BNT have been performed before it can be practically used as piezoelectric devices, such as additions of PbTiO 3 (PT), BaTiO 3 (BT), SrTiO 3 (ST), Bi 0.5 K 0.5 TiO 3 (BKT), CeO 2 , La 2 O 3 , Dy 2 O 3 , etc [2][3][4][5][6][7][8][9]. Among them, BNT-BT system has good piezoelectric properties because of the existence of a rhombohedral (F α )-tetragonal (F β ) morphotropic phase boundary (MPB) [10].…”

Section: Introductionmentioning

confidence: 99%

High-temperature stable dielectrics in Mn-modified (1-x) Bi0.5Na0.5TiO3-xCaTiO3 ceramics

et al. 2010

View full text Add to dashboard Cite

In the current work, the bulk (1-x) Bi 0.5 Na 0.5 TiO 3 -xCaTiO 3 [BNCT100x] system was synthesized via solidstate route. CaTiO 3 in solid solution with Bi 0.5 Na 0.5 TiO 3 was observed to decrease the dielectric constant at higher temperature and raise the dielectric constant at lower temperature. Polarization hysteresis measurements indicated that the ferroelectricity of Bi 0.5 Na 0.5 TiO 3 was weakened with an increase of CaTiO 3 , resulted in the shift of the depolarization temperature (T d ) toward lower temperatures. X-ray diffraction analysis revealed that TiO 2 was produced as a secondary phase due to the losses of Bi and Na during milling and sintering processes. Moreover, the addition of Ca promoted the segregation of Ti out of BNT grains. Dielectric properties of BNCT12 ceramics with different dopant levels of Mn were characterized as a function of temperature for potential use of high-temperature capacitors. Modification of BNCT12 materials with Mn improved the temperature characteristic of capacitance (−55°C to 250°C, △C/C 25°C ≤ ±15%). Finally, by doping 1.5 wt% Mn, the dielectric constant at room temperature could reach over 900, with a low dielectric loss below 1% and a high insulation resistivity about 10 12 Ω•cm. Furthermore, a small amount of Mn influenced the microstructure in the way to inhibit the long grains and grain growth of BNCT solution ceramics. However, excess Mn caused abnormal grain growth, and therefore, rectangle grains appeared again.

show abstract

“…The maximum of dielectric permittivity [2,3,5,6] appeared around 325-335 • C and its value at a frequency of 10 kHz was 2600 [6]. The dielectric loss increased rapidly above this temperature.…”

Section: Introductionmentioning

confidence: 91%

Study of electronic and optical properties of Bi0.5Na0.5TiO3, BiTiO3, NaTiO3 crystals using full potential linear argumented plane wave method

Baedi¹,

Mircholi²,

Moghadam³

2015

Optik

View full text Add to dashboard Cite

Characterization of Bi_0.5Na_0.5TiO₃‐PbTiO_3M Dielectric Materials

Cited by 66 publications

References 8 publications

Effects of Ca and Mn Additions on the Microstructure and Dielectric Properties of (Bi0.5Na0.5)TiO3 Ceramics

Effects of Ca and Mn Additions on the Microstructure and Dielectric Properties of (Bi0.5Na0.5)TiO3 Ceramics

High-temperature stable dielectrics in Mn-modified (1-x) Bi0.5Na0.5TiO3-xCaTiO3 ceramics

Study of electronic and optical properties of Bi0.5Na0.5TiO3, BiTiO3, NaTiO3 crystals using full potential linear argumented plane wave method

Contact Info

Product

Resources

About