(Ca0.5Mn0.5)2MnTeO6 - An Anomalously Stable High-Pressure Double Perovskite.
Double Perovskite
Double double Perovskite
Frustrated Spin glass
Journal
Chemistry, an Asian journal
ISSN: 1861-471X
Titre abrégé: Chem Asian J
Pays: Germany
ID NLM: 101294643
Informations de publication
Date de publication:
10 May 2024
10 May 2024
Historique:
revised:
07
05
2024
received:
12
03
2024
accepted:
09
05
2024
medline:
10
5
2024
pubmed:
10
5
2024
entrez:
10
5
2024
Statut:
aheadofprint
Résumé
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.
Identifiants
pubmed: 38727092
doi: 10.1002/asia.202400280
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e202400280Informations de copyright
© 2024 Wiley‐VCH GmbH.