Synthesis, structure and dielectric properties of NajSnTeO

J. H. Park, P. M. Woodward, J. B. Parise, I. Lubomirsky, O. Stafsudd

Research output: Contribution to journalArticlepeer-review

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Abstract

A new perovskite was recovered from the high pressure-high temperature treatment of the cc-TiSbO3 form of N-4SnTeOj at 7 GPa and 950 °C for 30 minutes. Synchrotron x-ray powder diffraction data show the space group is P2Jn with o=5.40361(5), 6=5.46152(5), c=7.69288(7)A and β=90.034(3)°. Using disk samples of both polymorphs, the dielectric properties were mea' sured as a function of temperature. At ambient conditions, the perovskite form has a more than 1.5 fold enhancement in dielectric constant compared to the cx-TlSb03 form while the molar volume I and the molecular polarizability decrease. r °1999 Materials Research Society.

Original languageEnglish
Pages (from-to)139-144
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume547
StatePublished - 1999
Externally publishedYes

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