Erdem, Emre ; Schaab, Silke ; Jo, Wook ; Ozarowski, Andrew ; Van Tol, Johan ; Eichel, Rüdiger-A. (2012):
High-Frequency EPR Analysis of MnO2-Doped [Bi0.5Na0.5]TiO3-BaTiO3Piezoelectric Ceramics – Manganese Oxidation States and Materials ‘Hardening’.
In: Ferroelectrics, 428 (1), pp. 116-121. ISSN 0015-0193,
[Article]
Abstract
High-frequency electron paramagnetic resonance (EPR) has been used to identify different manganese oxidation states in the 0.5 mol% MnO 2 -doped (100−x)Bi 0.5 Na 0.5 TiO 3 -xBaTiO 3 (BNT-xBT) solid solution with x=6. The as-sintered and air-annealed samples show two distinct EPR resonances that were assigned to Mn 2+ - and Mn 3+ -ions, respectively, incorporated at the Ti-site. The equilibrium between acceptor-type Mn″ Ti - and Mn′ Ti -states can be explained by the thermodynamic equilibration under air at the sintering temperature corresponding to [n]>[p], which yields an n-type Mn:BNT-6BT compound.
| Item Type: |
Article
|
| Erschienen: |
2012 |
| Creators: |
Erdem, Emre ; Schaab, Silke ; Jo, Wook ; Ozarowski, Andrew ; Van Tol, Johan ; Eichel, Rüdiger-A. |
| Title: |
High-Frequency EPR Analysis of MnO2-Doped [Bi0.5Na0.5]TiO3-BaTiO3Piezoelectric Ceramics – Manganese Oxidation States and Materials ‘Hardening’ |
| Language: |
English |
| Abstract: |
High-frequency electron paramagnetic resonance (EPR) has been used to identify different manganese oxidation states in the 0.5 mol% MnO 2 -doped (100−x)Bi 0.5 Na 0.5 TiO 3 -xBaTiO 3 (BNT-xBT) solid solution with x=6. The as-sintered and air-annealed samples show two distinct EPR resonances that were assigned to Mn 2+ - and Mn 3+ -ions, respectively, incorporated at the Ti-site. The equilibrium between acceptor-type Mn″ Ti - and Mn′ Ti -states can be explained by the thermodynamic equilibration under air at the sintering temperature corresponding to [n]>[p], which yields an n-type Mn:BNT-6BT compound. |
| Journal or Publication Title: |
Ferroelectrics |
| Volume of the journal: |
428 |
| Issue Number: |
1 |
| Uncontrolled Keywords: |
Piezoelectrics, bismuth titanate, defect structure, manganese doping, high-frequency EPR |
| Divisions: |
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A1: Manufacturing of ceramic, textured actuators with high strain
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B1: EPR-Investigations of defects in ferroelectric ceramic material
11 Department of Materials and Earth Sciences > Material Science
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
11 Department of Materials and Earth Sciences
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio) |
| Date Deposited: |
14 Jun 2012 10:31 |
| URL / URN: |
http://dx.doi.org/10.1080/00150193.2012.675831 |
| Additional Information: |
SFB 595 Cooperation A1, B1 |
| Identification Number: |
doi:10.1080/00150193.2012.675831 |
| PPN: |
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