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Abstract
We have used high-pressure synthesis to synthesize samples of Ca2−xMnxTi2O6 double perovskite, where x varies between 0.2 and 1. The synthesized materials were structurally characterized with powder X-ray diffraction (XRD). Rietveld refinement of the XRD patterns was used to study the change from CaTiO3 (x = 0) to the composition CaMnTi2O6 (x = 1) where half of the Ca(ii) ions are replaced by smaller Mn(ii) ions. We analyzed the peak shapes in the XRD patterns, as well as lattice parameters, and it appears that smooth symmetry change from the centrosymmetric space group Pbnm to the non-centrosymmetric space group P42mc occurs between x = 0.3 and x = 0.5. We also confirmed the centrosymmetric to non-centrosymmetric transition by characterizing the dielectric properties of the materials with ferroelectric measurements.
Original language | English |
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Pages (from-to) | 6282-6288 |
Journal | Dalton Transactions |
Volume | 53 |
Issue number | 14 |
Early online date | 11 Mar 2024 |
DOIs | |
Publication status | Published - 14 Apr 2024 |
MoE publication type | A1 Journal article-refereed |
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Dive into the research topics of 'Centrosymmetric to non-centrosymmetric transition in the Ca2−xMnxTi2O6 double perovskite system studied through structural analysis and dielectric properties'. Together they form a unique fingerprint.Projects
- 1 Finished
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ATOM-THERMOX: Atomistic Thermal Engineering of Metal Oxides (ATOM-THERMOX)
Karttunen, A. (Principal investigator), Albrecht, E. (Project Member), Linnera, J. (Project Member), Mattila, N. (Project Member), Conley, K. (Project Member), Hellsten, N. (Project Member), Eklund, K. (Project Member) & Kuklin, M. (Project Member)
01/09/2018 → 31/08/2022
Project: Academy of Finland: Other research funding
Equipment
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Raw Materials Research Infrastructure
Karppinen, M. (Manager)
School of Chemical EngineeringFacility/equipment: Facility