Detection of phase transitions in sodium bismuth titanate–barium titanate single crystals by acoustic emission

2008 ◽  
Vol 92 (1) ◽  
pp. 012904 ◽  
Author(s):  
E. Dul’kin ◽  
E. Mojaev ◽  
M. Roth ◽  
S. Greicius ◽  
T. Granzow
Keyword(s):  
Acoustic Emission ◽  
Phase Transitions ◽  
Barium Titanate ◽  
Single Crystals ◽  
Bismuth Titanate ◽  
Sodium Bismuth Titanate

Phase Formation and Phase Transitions in Nonstoichiometric Sodium Bismuth Titanate Ceramics

2018 ◽  
Vol 54 (7) ◽  
pp. 744-748 ◽  
Author(s):  
E. D. Politova ◽  
A. V. Mosunov ◽  
D. A. Strebkov ◽  
N. V. Golubko ◽  
G. M. Kaleva ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Phase Formation ◽  
Bismuth Titanate ◽  
Sodium Bismuth Titanate ◽  
Titanate Ceramics

Ionic conductivity of acceptor doped sodium bismuth titanate: influence of dopants, phase transitions and defect associates

2017 ◽  
Vol 5 (35) ◽  
pp. 8958-8965 ◽  
Author(s):  
Leonie Koch ◽  
Sebastian Steiner ◽  
Kai-Christian Meyer ◽  
In-Tae Seo ◽  
Karsten Albe ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Ionic Conductivity ◽  
Complex Formation ◽  
Bismuth Titanate ◽  
Dopant Concentration ◽  
Phase Coexistence ◽  
Defect Complex ◽  
Temperature Dependent ◽  
Sodium Bismuth Titanate ◽  
Formation Phase

The temperature dependent ionic conductivity of NBT results from an interplay of defect complex formation, phase coexistence, and dopant concentration.

Peculiarities of phase transitions in sodium-bismuth titanate

1980 ◽  
Vol 25 (1) ◽  
pp. 395-397 ◽  
Author(s):  
I. P. Pronin ◽  
P. P. Syrnikov ◽  
V. A. Isupov ◽  
V. M. Egorov ◽  
N. V. Zaitseva
Keyword(s):  
Phase Transitions ◽  
Bismuth Titanate ◽  
Sodium Bismuth Titanate

Phase transitions and soft modes in sodium bismuth titanate

1985 ◽  
Vol 63 (1) ◽  
pp. 153-160 ◽  
Author(s):  
S. B. Vakhrushev ◽  
V. A. Isupov ◽  
B. E. Kvyatkovsky ◽  
N. M. Okuneva ◽  
I. P. Pronin ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Bismuth Titanate ◽  
Sodium Bismuth Titanate ◽  
Soft Modes

SYNTHESIS OF LEAD FREE SODIUM BISMUTH TITANATE (NBT) CERAMIC BY CONVENTIONAL AND MICROWAVE SINTERING METHODS

2011 ◽  
Vol 01 (01) ◽  
pp. 71-77 ◽  
Author(s):  
M. VENKATA RAMANA ◽  
S. ROOPAS KIRAN ◽  
N. RAMAMANOHAR REDDY ◽  
K. V. SIVA KUMAR ◽  
V. R. K. MURTHY ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Bismuth Titanate ◽  
Microwave Sintering ◽  
Structural Phase ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Elastic Behavior ◽  
Sodium Bismuth Titanate ◽  
Sensitive Property ◽  
Longitudinal Modulus

Dielectric studies were carried out on a lead free Sodium Bismuth Titanate, NBT, ( Na 0.5 Bi 0.5 TiO 3) composition. The material was synthesized by conventional ceramic method (CS) and microwave sintering (MS). The presence of single phase has been confirmed by X-ray diffraction and scanning electron microscopy of NBT ceramic. The later technique (MS) resulted in material with high density, dielectric properties and improved microstructure. The transition temperature was observed slightly higher for microwave sintered (MS) material. Longitudinal modulus measurements are very sensitive property to identify the phase transitions in ceramics. Longitudinal modulus (L) measurements were also employed on these samples in the frequency 136 kHz and can be studied in the wide temperature range 30°C to 400°C. The elastic behavior (L) showed a break at two temperatures (~200°C and 350°C) in both the conventional and microwave sintered ceramics. In NBT ceramics, permittivity anomalies are connected to modulus anomalies. The results are correlated with the dielectric measurements. This behavior explained in the light of structural phase transitions in the ferroelectric ceramics.

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