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 language | English |
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Pages (from-to) | 12573-12577 |
Number of pages | 5 |
Journal | Ceramics International |
Volume | 40 |
Issue number | 8 PART A |
DOIs | |
State | Published - Sep 2014 |
Externally published | Yes |
Keywords
- Barium strontium titanate
- Dielectric properties
- La/Mn codoping
- Thin films