Preparation and dielectric properties of Ba5XMgNb 9O30 (X = Nd, Y) ceramics

Gaoke Zhang, Shixi Ouyang, Jiping Cheng, Amar S. Bhalla, Ruyan Guo

Research output: Contribution to journalArticle

Abstract

Two compounds Ba5NdMgNb9O30 and Ba 5YMgNb9O30 were synthesized by solid-state reaction method. The results of scanning electron microscopy and X-ray diffraction analysis indicated that the compounds form A-site filled tetragonal tungsten bronze structure. Dielectric studies show that the dense ceramics of the above compounds have dielectric constant of 227 and 213 with dielectric loss 5.77 × 10-3 and 10.88 × 10-3 at 1 MHz. The ferroelectric phase transitions of the diffuse-type were observed in experimental measurements. The diffusivity functions calculated are 1.58 and 1.62 for Ba5NdMgNb9O30 and Ba 5YMgNb9O30, respectively.

Original languageEnglish (US)
Pages (from-to)35-42
Number of pages8
JournalFerroelectrics, Letters Section
Volume37
Issue number2
DOIs
StatePublished - Mar 1 2010

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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