Centrosymmetric to non-centrosymmetric transition in the Ca2−xMnxTi2O6 double perovskite system studied through structural analysis and dielectric properties

Elisabeth K. Albrecht; Tuomo Siponkoski; Eeva-Leena Rautama; Maarit Karppinen; Antti J. Karttunen

doi:10.1039/d4dt00360h

Centrosymmetric to non-centrosymmetric transition in the Ca_2−xMn_xTi₂O₆ double perovskite system studied through structural analysis and dielectric properties

Elisabeth K. Albrecht
, Tuomo Siponkoski
, Eeva-Leena Rautama
, Maarit Karppinen
, Antti J. Karttunen^*

^*Tämän työn vastaava kirjoittaja

University of Oulu

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

1 Sitaatiot (Scopus)

79 Lataukset (Pure)

Abstrakti

We have used high-pressure synthesis to synthesize samples of Ca_2−xMn_xTi₂O₆ 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.

Alkuperäiskieli	Englanti
Sivut	6282-6288
Julkaisu	Dalton Transactions
Vuosikerta	53
Numero	14
Varhainen verkossa julkaisun päivämäärä	11 maalisk. 2024
DOI - pysyväislinkit	https://doi.org/10.1039/d4dt00360h
Tila	Julkaistu - 14 huhtik. 2024
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Rahoitus

We thank Dr Benjamin Wilson (Aalto University) for his help in pycnometric volume determination of our samples, Dr Girish Tewari (Aalto University) for the preparation of the samples for electrical measurements, and Dr Taneli Tiittanen (Aalto University) for his help in setting up the high-pressure experiments. We acknowledge funding from the Research Council of Finland (grant no. 317273) and the Finnish Cultural Foundation. We thank CSC – The Finnish IT Center for Science for computational resources and RawMatTERS Finland Infrastructure (RAMI) at Aalto University.

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10.1039/d4dt00360hLisenssi: CC BY

CHEM_Albrecht_et_al_Centrosymmetric_to_non-centrosymmetric_2024_Dalton_TransactionsFinal published version, 1,27 MBLisenssi: CC BY

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ATOM-THERMOX: Metallioksidien lämmönjohtavuuden säätäminen atomitasolla (ATOM-THERMOX)
Karttunen, A. (Vastuullinen johtaja), Conley, K. (Projektin jäsen), Linnera, J. (Projektin jäsen), Makara, E. (Projektin jäsen), Hellsten, N. (Projektin jäsen), Kuklin, M. (Projektin jäsen), Albrecht, E. (Projektin jäsen), Mattila, N. (Projektin jäsen), Eklund, K. (Projektin jäsen) & Modi, V. (Projektin jäsen)
01/09/2018 → 31/08/2022
Projekti: Academy of Finland: Other research funding

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@article{740a4d83718c4421b0107ec2b21636c8,

title = "Centrosymmetric to non-centrosymmetric transition in the Ca2−xMnxTi2O6 double perovskite system studied through structural analysis and dielectric properties",

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.",

author = "Albrecht, \{Elisabeth K.\} and Tuomo Siponkoski and Eeva-Leena Rautama and Maarit Karppinen and Karttunen, \{Antti J.\}",

note = "Publisher Copyright: {\textcopyright} 2024 The Royal Society of Chemistry",

year = "2024",

month = apr,

day = "14",

doi = "10.1039/d4dt00360h",

language = "English",

volume = "53",

pages = "6282--6288",

journal = "Dalton Transactions",

issn = "1477-9226",

publisher = "Royal Society of Chemistry",

number = "14",

}

Centrosymmetric to non-centrosymmetric transition in the Ca_2−xMn_xTi₂O₆ double perovskite system studied through structural analysis and dielectric properties. / Albrecht, Elisabeth K.; Siponkoski, Tuomo; Rautama, Eeva-Leena et al.
julkaisussa: Dalton Transactions, Vuosikerta 53, Nro 14, 14.04.2024, s. 6282-6288.

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

TY - JOUR

T1 - Centrosymmetric to non-centrosymmetric transition in the Ca2−xMnxTi2O6 double perovskite system studied through structural analysis and dielectric properties

AU - Albrecht, Elisabeth K.

AU - Siponkoski, Tuomo

AU - Rautama, Eeva-Leena

AU - Karppinen, Maarit

AU - Karttunen, Antti J.

PY - 2024/4/14

Y1 - 2024/4/14

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85187978873

U2 - 10.1039/d4dt00360h

DO - 10.1039/d4dt00360h

M3 - Article

AN - SCOPUS:85187978873

SN - 1477-9226

VL - 53

SP - 6282

EP - 6288

JO - Dalton Transactions

JF - Dalton Transactions

IS - 14

ER -

Centrosymmetric to non-centrosymmetric transition in the Ca2−xMnxTi2O6 double perovskite system studied through structural analysis and dielectric properties

Abstrakti

Rahoitus

YK:n kestävän kehityksen tavoitteet

Pääsy asiakirjaan

Muut tiedostot ja linkit

Sormenjälki

Projektit

ATOM-THERMOX: Metallioksidien lämmönjohtavuuden säätäminen atomitasolla (ATOM-THERMOX)

Laitteet

Raaka-aineiden tutkimusinfrastruktuuri

Siteeraa tätä

Centrosymmetric to non-centrosymmetric transition in the Ca_2−xMn_xTi₂O₆ double perovskite system studied through structural analysis and dielectric properties