Ferroelectricity and gradual melting in NaNO2 particles confined within porous alumina

Cheng Tien, E. V. Charnaya, D. Yu Podorozhkin, M. K. Lee, S. V. Baryshnikov

研究成果: Article同行評審

20 引文 斯高帕斯(Scopus)

摘要

NMR and dielectric studies were carried out for ferroelectric NaNO2 embedded into porous alumina. 23Na spin-lattice relaxation and static lineshape were measured within a large temperature range covering the ferroelectric phase transition in bulk sodium nitrite till NaNO2 melting. The coexistence of the crystalline and melted states of confined sodium nitrite was observed above 400 K, gradual melting being over at about 510 K. The solid portion of confined sodium nitrite bore ferroelectricity with phase transition temperature higher than that in bulk NaNO2. Correlation time of molecular mobility in the melted fraction was found and activation enthalpy was estimated.

原文English
頁(從 - 到)2346-2351
頁數6
期刊Physica Status Solidi (B) Basic Research
246
發行號10
DOIs
出版狀態Published - 2009 十月

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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