Accession Number : AD1046055

Title :   Development of n- and p-type Doped Perovskite Single Crystals Using Solid-State Single Crystal Growth (SSCG) Technique

Descriptive Note : Technical Report,04 Jun 2014,03 Jun 2017

Corporate Author : Sunmoon University Chungnam Korea, South

Personal Author(s) : Lee, Ho-Yong

Full Text :

Report Date : 09 Oct 2017

Pagination or Media Count : 32

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.

Descriptors :   Crystal Growth , Perovskites , Ceramics , Actuators , TITANATES , Single Crystals , fabrication , doping , solid state physics

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE