Dielectric properties of La/Mn codoped Ba0.63Sr 0.37TiO3 thin films prepared by RF magnetron sputtering

Lirong Song, Ying Chen, Genshui Wang, Lihui Yang, Tao Li, Feng Gao, Xianlin Dong

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

La/Mn codoped Ba0.63Sr0.37TiO3 (BST) films were grown on LaNiO3-coated Si substrates via RF magnetron sputtering. We also fabricated pure BST and La-doped BST films for comparison. Results show that moderate La/Mn codoping improves dielectric tunability (59.6%) as compared to pure BST (28.2%) at 700 kV/cm, and yields lower dielectric loss (tanδ=0.0170) and higher figure of merit (FOM=35.06) comparing with La-doped BST (tanδ=0.0242, FOM=26.32). This work demonstrated that La/Mn codoping could be an effective method to obtain high tunability and low loss tangent.

Original languageEnglish
Pages (from-to)12573-12577
Number of pages5
JournalCeramics International
Volume40
Issue number8 PART A
DOIs
StatePublished - Sep 2014
Externally publishedYes

Keywords

  • Barium strontium titanate
  • Dielectric properties
  • La/Mn codoping
  • Thin films

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