New cryogenic phase transitions in SrSnO3
SCIE
SCOPUS
- Title
- New cryogenic phase transitions in SrSnO3
- Authors
- Singh, MK; Hong, JW; Karan, NK; Jang, HM; Katiyar, RS; Redfern, SAT; Scott, JF
- Date Issued
- 2010-03-10
- Publisher
- IOP PUBLISHING LTD
- Abstract
- Strontium stannate is under study as an ultra-stable dielectric material for microelectronic applications at low temperatures. It is known to have a remarkably temperature-independent dielectric constant from 27 K to room temperature. However, we report anomalies in the Raman spectra, dielectric response, and differential thermal analysis of strontium stannate compatible with a structural phase transition at 160 K. Further anomalies are seen in calorimetric and Raman data (but not dielectric data) that suggest another phase transition at 270 K. A preliminary x-ray powder diffraction study confirms a small change in the pseudo-cubic lattice constant a(T) at the lower transition.
- Keywords
- PEROVSKITE; MANTLE; SR
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/26490
- DOI
- 10.1088/0953-8984/22/9/095901
- ISSN
- 0953-8984
- Article Type
- Article
- Citation
- JOURNAL OF PHYSICS-CONDENSED MATTER, vol. 22, no. 9, page. 95901-1 - 95901-4, 2010-03-10
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