(Ca0.5Mn0.5)2MnTeO6 – An Anomalously Stable High-Pressure Double Perovskite

Azizah Almadhi; Kunlang Ji; Sean D. Injac; Clemens Ritter; J. Paul Attfield

doi:10.1002/asia.202400280

(Ca_0.5Mn_0.5)₂MnTeO₆ – An Anomalously Stable High-Pressure Double Perovskite

Azizah Almadhi, Kunlang Ji, Sean D. Injac, Clemens Ritter, J. Paul Attfield^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

High pressure high temperature treatments of the composition CaMnMnTeO₆ are found to yield only an A₂BB’O₆-type double perovskite (Ca_0.5Mn_0.5)₂MnTeO₆, rather than a AA'BB’O₆ double double perovskite with A- and B- site cation order as found in analogs CaMnMnReO₆ and CaMnMnWO₆ with similar cation sizes. Double perovskite (Ca_0.5Mn_0.5)₂MnTeO₆ adopts a monoclinic structure in space group P2₁/n with a framework of highly tilted MnO₆ and TeO₆ octahedra enclosing disordered Ca²⁺ and Mn²⁺ cations. Magnetic measurements show that (Ca_0.5Mn_0.5)₂MnTeO₆ is a highly frustrated spin glass with a freezing transition at 5 K, and no long-range spin order is apparent by neutron diffraction at 1.6 K.

Original language	English
Article number	e202400280
Journal	Chemistry - An Asian Journal
Volume	19
Issue number	14
Early online date	10 May 2024
DOIs	https://doi.org/10.1002/asia.202400280
Publication status	Published - 15 Jul 2024

Keywords / Materials (for Non-textual outputs)

Double double Perovskite
Double Perovskite
Frustrated Spin glass

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10.1002/asia.202400280

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@article{71f275c874e24599b71ebb13a221fecc,

title = "(Ca0.5Mn0.5)2MnTeO6 – An Anomalously Stable High-Pressure Double Perovskite",

abstract = "High pressure high temperature treatments of the composition CaMnMnTeO6 are found to yield only an A2BB{\textquoteright}O6-type double perovskite (Ca0.5Mn0.5)2MnTeO6, rather than a AA'BB{\textquoteright}O6 double double perovskite with A- and B- site cation order as found in analogs CaMnMnReO6 and CaMnMnWO6 with similar cation sizes. Double perovskite (Ca0.5Mn0.5)2MnTeO6 adopts a monoclinic structure in space group P21/n with a framework of highly tilted MnO6 and TeO6 octahedra enclosing disordered Ca2+ and Mn2+ cations. Magnetic measurements show that (Ca0.5Mn0.5)2MnTeO6 is a highly frustrated spin glass with a freezing transition at 5 K, and no long-range spin order is apparent by neutron diffraction at 1.6 K.",

keywords = "Double double Perovskite, Double Perovskite, Frustrated Spin glass",

author = "Azizah Almadhi and Kunlang Ji and Injac, {Sean D.} and Clemens Ritter and Attfield, {J. Paul}",

note = "Publisher Copyright: {\textcopyright} 2024 The Authors. Chemistry - An Asian Journal published by Wiley-VCH GmbH.",

year = "2024",

month = jul,

day = "15",

doi = "10.1002/asia.202400280",

language = "English",

volume = "19",

journal = "Chemistry - An Asian Journal",

issn = "1861-4728",

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TY - JOUR

T1 - (Ca0.5Mn0.5)2MnTeO6 – An Anomalously Stable High-Pressure Double Perovskite

AU - Almadhi, Azizah

AU - Ji, Kunlang

AU - Injac, Sean D.

AU - Ritter, Clemens

AU - Attfield, J. Paul

PY - 2024/7/15

Y1 - 2024/7/15

N2 - High pressure high temperature treatments of the composition CaMnMnTeO6 are found to yield only an A2BB’O6-type double perovskite (Ca0.5Mn0.5)2MnTeO6, rather than a AA'BB’O6 double double perovskite with A- and B- site cation order as found in analogs CaMnMnReO6 and CaMnMnWO6 with similar cation sizes. Double perovskite (Ca0.5Mn0.5)2MnTeO6 adopts a monoclinic structure in space group P21/n with a framework of highly tilted MnO6 and TeO6 octahedra enclosing disordered Ca2+ and Mn2+ cations. Magnetic measurements show that (Ca0.5Mn0.5)2MnTeO6 is a highly frustrated spin glass with a freezing transition at 5 K, and no long-range spin order is apparent by neutron diffraction at 1.6 K.

AB - High pressure high temperature treatments of the composition CaMnMnTeO6 are found to yield only an A2BB’O6-type double perovskite (Ca0.5Mn0.5)2MnTeO6, rather than a AA'BB’O6 double double perovskite with A- and B- site cation order as found in analogs CaMnMnReO6 and CaMnMnWO6 with similar cation sizes. Double perovskite (Ca0.5Mn0.5)2MnTeO6 adopts a monoclinic structure in space group P21/n with a framework of highly tilted MnO6 and TeO6 octahedra enclosing disordered Ca2+ and Mn2+ cations. Magnetic measurements show that (Ca0.5Mn0.5)2MnTeO6 is a highly frustrated spin glass with a freezing transition at 5 K, and no long-range spin order is apparent by neutron diffraction at 1.6 K.

KW - Double double Perovskite

KW - Double Perovskite

KW - Frustrated Spin glass

U2 - 10.1002/asia.202400280

DO - 10.1002/asia.202400280

M3 - Article

C2 - 38727092

AN - SCOPUS:85195589566

SN - 1861-4728

VL - 19

JO - Chemistry - An Asian Journal

JF - Chemistry - An Asian Journal

IS - 14

M1 - e202400280

ER -

(Ca_0.5Mn_0.5)₂MnTeO₆ – An Anomalously Stable High-Pressure Double Perovskite

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