Recent developments in transition temperature (Tc) perovskite crystals

Thomas R. Shrout, Richard Eitel, Shujun Zhang, Clive A. Randall, Edward Alberta, Paul Rehrig

Research output: Contribution to journalConference article

9 Scopus citations

Abstract

This paper summarizes the temperature behavior of various Relaxor-PT piezoelectric single crystals. Owing to the strongly curved morphotropic phase boundary (MPB), the usage temperature is limited by TR-T, the rhombohedral to tetragonal phase transformation occuring at significantly lower temperatures than Tc. Attempts to modify the temperature usage range of PMN-PT and PZN-PT rhombohedral crystals using minor dopant modifications were limited, with little success. Of significant potential are crystals of PYN-PT, with a Tc > 330°C, even though TR-T was nearly half that value at ∼160°C. Lastly, single crystals in the novel Bi(Sc)O 3-PbTiO3 system offer significantly higher Tcs > 400°C, while exhibiting electromechanical coupling coefficients > 90%.

Original languageEnglish (US)
Pages (from-to)774-777
Number of pages4
JournalProceedings of the IEEE Ultrasonics Symposium
Volume1
StatePublished - Dec 1 2003
Event2003 IEEE Ultrasonics Symposium - Proceedings - Honolulu, HI, United States
Duration: Oct 5 2003Oct 8 2003

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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