Development of n- and p-type Doped Perovskite Single Crystals Using Solid-State Single Crystal Growth (SSCG) Technique
Abstract
In this project the solid-state growth of n- and p-type doped perovskite single crystals [(1) paraelectric SrTiO3, (2) normal ferroelectric BaTiO3, (3) relaxor ferroelectric 0.85BaTiO3-0.15Bi(Mg0.5Ti0.5)O3, and (4) antiferroelectric PbZrO3] have been tried. Among them n- and p-type doped BaTiO3 single crystals have been successfully fabricated. And their bi-crystals containing a twin or twist boundary are also fabricated using diffusion bonding process of two single crystal plates. These results demonstrate that the SSCG (solid-state single crystal growth) technique are suitable to grow a variety of n- and p-type doped perovskite single crystals of complicated compositions. The Fe-doped (001) BaTiO3 single crystals show an ultrahigh strain of 0.8 at 1 kV/mm (Smax/Emax = 15,000 pm/V) which is 30 times higher than PZT ceramics and 7.5 times higher than PMN-PT single crystals. Therefore the BaTiO3 single crystals having ultrahigh unipolar strains will be used for actuator, sensor, and transducer applications. The research is anticipated to guide the practical development of functional perovskite single crystals.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 09, 2017
- Accession Number
- AD1046055
Entities
People
- Ho-yong Lee