Abstract
To gain a deep insight into the contribution of Nd-substitution, we have investigated structural phase transition behavior in Bi4-xNd xTi3O12 (BNT) powders derived from chemical solutions. Differential thermal analysis and thermo-gravimetry (DTA-TG) and X-ray diffraction (XRD) studies indicated that the para- and ferroelectric transition temperature (Curie temperature, Tc) continuously decreased with increasing x. The XRD studies also showed that continuous decrease in lattice anisotropy (a/b, orthorhombicity) with the increase of x. Considering the close relationship with Tc, a/b and spontaneous polarization Ps in displacive ferroelectrics, Nd-substitution may not enhance the intrinsic Ps in Bi4Ti3O12 (BIT). For direct evaluation of Ps upon Nd-substitution, synthesis route to polar-axis-orientated BNT films was investigated.
Original language | English |
---|---|
Pages (from-to) | 53-56 |
Number of pages | 4 |
Journal | Key Engineering Materials |
Volume | 269 |
DOIs | |
Publication status | Published - 2004 |
Externally published | Yes |
Event | Proceedings of the 23rd Electronics Division Meeting of the Ceramic Society of Japan - Kawasaki, Japan Duration: Oct 23 2003 → Oct 24 2003 |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering